After commit f7fac17ca9 ("xhci: Convert xhci_handshake() to use
readl_poll_timeout_atomic()"), ASMedia xHCI may fail to suspend.
Although the algorithms are essentially the same, the old max timeout is
(usec + usec * time of doing readl()), and the new max timeout is just
usec, which is much less than the old one.
Increase the timeout to make ASMedia xHCI able to suspend again.
BugLink: https://bugs.launchpad.net/bugs/1844021
Fixes: f7fac17ca9 ("xhci: Convert xhci_handshake() to use readl_poll_timeout_atomic()")
Cc: <stable@vger.kernel.org> # v5.2+
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1570190373-30684-8-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The system can hit a deadlock if an xhci adapter breaks while initializing.
The deadlock is between two threads: thread 1 is tearing down the
adapter and is stuck in usb_unlocked_disable_lpm waiting to lock the
hcd->handwidth_mutex. Thread 2 is holding this mutex (while still trying
to add a usb device), but is stuck in xhci_endpoint_reset waiting for a
stop or config command to complete. A reboot is required to resolve.
It turns out when calling xhci_queue_stop_endpoint and
xhci_queue_configure_endpoint in xhci_endpoint_reset, the return code is
not checked for errors. If the timing is right and the adapter dies just
before either of these commands get issued, we hang indefinitely waiting
for a completion on a command that didn't get issued.
This wasn't a problem before the following fix because we didn't send
commands in xhci_endpoint_reset:
commit f5249461b5 ("xhci: Clear the host side toggle manually when
endpoint is soft reset")
With the patch I am submitting, a duration test which breaks adapters
during initialization (and which deadlocks with the standard kernel) runs
without issue.
Fixes: f5249461b5 ("xhci: Clear the host side toggle manually when endpoint is soft reset")
Cc: <stable@vger.kernel.org> # v4.17+
Cc: Torez Smith <torez@redhat.com>
Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com>
Signed-off-by: Torez Smith <torez@redhat.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1570190373-30684-7-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
NVIDIA 3.1 xHCI card would lose power when moving power state into D3Cold.
Thus we need to wait for CNR bit to clear in xhci resume, just as in
xhci init.
[Minor changes to comment and commit message -Mathias]
Cc: <stable@vger.kernel.org>
Signed-off-by: Rick Tseng <rtseng@nvidia.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1570190373-30684-6-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Early xHCI 1.1 spec did not mention USB 3.1 capable hosts should set
sbrn to 0x31, or that the minor revision is a two digit BCD
containing minor and sub-minor numbers.
This was later clarified in xHCI 1.2.
Some USB 3.1 capable hosts therefore have sbrn set to 0x30, or minor
revision set to 0x1 instead of 0x10.
Detect the USB 3.1 capability correctly for these hosts as well
Fixes: ddd57980a0 ("xhci: detect USB 3.2 capable host controllers correctly")
Cc: <stable@vger.kernel.org> # v4.18+
Cc: Loïc Yhuel <loic.yhuel@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1570190373-30684-5-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If an endpoint is encountered that returns USB3_LPM_DEVICE_INITIATED, keep
checking further endpoints, as there might be periodic endpoints later
that return USB3_LPM_DISABLED due to shorter service intervals.
Without this, the code can set too high a maximum-exit-latency and
prevent the use of multiple USB3 cameras that should be able to work.
Cc: <stable@vger.kernel.org>
Signed-off-by: Jan Schmidt <jan@centricular.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1570190373-30684-4-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If host/hub initiated link pm is prevented by a driver flag we still must
ensure that periodic endpoints have longer service intervals than link pm
exit latency before allowing device initiated link pm.
Fix this by continue walking and checking endpoint service interval if
xhci_get_timeout_no_hub_lpm() returns anything else than USB3_LPM_DISABLED
While at it fix the split line error message
Tested-by: Jan Schmidt <jan@centricular.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1570190373-30684-3-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The check printing out the "WARN Wrong bounce buffer write length:"
uses incorrect values when comparing bytes written from scatterlist
to bounce buffer. Actual copied lengths are fine.
The used seg->bounce_len will be set to equal new_buf_len a few lines later
in the code, but is incorrect when doing the comparison.
The patch which added this false warning was backported to 4.8+ kernels
so this should be backported as far as well.
Cc: <stable@vger.kernel.org> # v4.8+
Fixes: 597c56e372 ("xhci: update bounce buffer with correct sg num")
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1570190373-30684-2-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver would return with a nonzero open count in case the reset
control request failed. This would prevent any further attempts to open
the char dev until the device was disconnected.
Fix this by incrementing the open count only on successful open.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20190919083039.30898-5-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver is using its struct usb_device pointer as an inverted
disconnected flag, but was setting it to NULL before making sure all
completion handlers had run. This could lead to a NULL-pointer
dereference in a number of dev_dbg and dev_err statements in the
completion handlers which relies on said pointer.
Fix this by unconditionally stopping all I/O and preventing
resubmissions by poisoning the interrupt URBs at disconnect and using a
dedicated disconnected flag.
This also makes sure that all I/O has completed by the time the
disconnect callback returns.
Fixes: 9d974b2a06 ("USB: legousbtower.c: remove err() usage")
Fixes: fef526cae7 ("USB: legousbtower: remove custom debug macro")
Fixes: 4dae996380 ("USB: legotower: remove custom debug macro and module parameter")
Cc: stable <stable@vger.kernel.org> # 3.5
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190919083039.30898-4-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix a potential deadlock if disconnect races with open.
Since commit d4ead16f50 ("USB: prevent char device open/deregister
race") core holds an rw-semaphore while open is called and when
releasing the minor number during deregistration. This can lead to an
ABBA deadlock if a driver takes a lock in open which it also holds
during deregistration.
This effectively reverts commit 78663ecc34 ("USB: disconnect open race
in legousbtower") which needlessly introduced this issue after a generic
fix for this race had been added to core by commit d4ead16f50 ("USB:
prevent char device open/deregister race").
Fixes: 78663ecc34 ("USB: disconnect open race in legousbtower")
Cc: stable <stable@vger.kernel.org> # 2.6.24
Reported-by: syzbot+f9549f5ee8a5416f0b95@syzkaller.appspotmail.com
Tested-by: syzbot+f9549f5ee8a5416f0b95@syzkaller.appspotmail.com
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190919083039.30898-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make sure to check for short transfers when retrieving the version
information at probe to avoid leaking uninitialised slab data when
logging it.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190919083039.30898-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Making sure that ucsi_displayport_enter() function does not
return an error if the displayport alternate mode has
already been entered. It's normal that the firmware (or
controller) has already entered the alternate mode by the
time the operating system is notified about the device.
Fixes: af8622f6a5 ("usb: typec: ucsi: Support for DisplayPort alt mode")
Cc: stable@vger.kernel.org
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191004100219.71152-3-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The "run_isr" flag is used for preventing the driver from
calling the interrupt service routine in its runtime resume
callback when the driver is expecting completion to a
command, but what that basically does is that it hides the
real problem. The real problem is that the controller is
allowed to suspend in the middle of command execution.
As a more appropriate fix for the problem, using autosuspend
delay time that matches UCSI_TIMEOUT_MS (5s). That prevents
the controller from suspending while still in the middle of
executing a command.
This fixes a potential deadlock. Both ccg_read() and
ccg_write() are called with the mutex already taken at least
from ccg_send_command(). In ccg_read() and ccg_write, the
mutex is only acquired so that run_isr flag can be set.
Fixes: f0e4cd948b ("usb: typec: ucsi: ccg: add runtime pm workaround")
Cc: stable@vger.kernel.org
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191004100219.71152-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Drop the redundant lcd mutex introduced by commit 925ce689bb ("USB:
autoconvert trivial BKL users to private mutex") which replaced an
earlier BKL use.
The lock serialised calls to open() against other open() and a custom
ioctl() returning the bcdDevice (sic!), but neither is needed.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190926091228.24634-9-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Drop the redundant disconnect mutex which was introduced after the
open-disconnect race had been addressed generally in USB core by commit
d4ead16f50 ("USB: prevent char device open/deregister race").
Specifically, the rw-semaphore in core guarantees that all calls to
open() will have completed and that no new calls to open() will occur
after usb_deregister_dev() returns. Hence there is no need use the
driver data as an inverted disconnected flag.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190926091228.24634-8-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make sure to stop all I/O on disconnect by adding a disconnected flag
which is used to prevent new I/O from being started and by stopping all
ongoing I/O before returning.
This also fixes a potential use-after-free on driver unbind in case the
driver data is freed before the completion handler has run.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org> # 7bbe990c98
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190926091228.24634-7-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The "port->typec_caps.data" and "port->typec_caps.type" variables are
enums and in this context GCC will treat them as an unsigned int so they
can never be less than zero.
Fixes: ae8a2ca8a2 ("usb: typec: Group all TCPCI/TCPM code together")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191001120117.GA23528@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The power budget for SuperSpeed mode should be 900 mA
according to USB specification, so set the power budget
to 900mA for dummy_start_ss which is only used for
SuperSpeed mode.
If the max power consumption of SuperSpeed device is
larger than 500 mA, insufficient available bus power
error happens in usb_choose_configuration function
when the device connects to dummy hcd.
Signed-off-by: Jacky Cao <Jacky.Cao@sony.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/16EA1F625E922C43B00B9D82250220500871CDE5@APYOKXMS108.ap.sony.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the return value of vhci_init_attr_group and
sysfs_create_group is non-zero, which mean they failed
to init attr_group and create sysfs group, so it would
better add 'failed' message to indicate that.
This patch also change pr_err to dev_err to trace which
device is failed.
Fixes: 0775a9cbc6 ("usbip: vhci extension: modifications to vhci driver")
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20190916150921.152977-1-maowenan@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
According to Greg KH, it has been generally agreed that when a USB
driver encounters an unknown error (or one it can't handle directly),
it should just give up instead of going into a potentially infinite
retry loop.
The three codes -EPROTO, -EILSEQ, and -ETIME fall into this category.
They can be caused by bus errors such as packet loss or corruption,
attempting to communicate with a disconnected device, or by malicious
firmware. Nowadays the extent of packet loss or corruption is
negligible, so it should be safe for a driver to give up whenever one
of these errors occurs.
Although the yurex driver handles -EILSEQ errors in this way, it
doesn't do the same for -EPROTO (as discovered by the syzbot fuzzer)
or other unrecognized errors. This patch adjusts the driver so that
it doesn't log an error message for -EPROTO or -ETIME, and it doesn't
retry after any errors.
Reported-and-tested-by: syzbot+b24d736f18a1541ad550@syzkaller.appspotmail.com
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Tomoki Sekiyama <tomoki.sekiyama@gmail.com>
CC: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/Pine.LNX.4.44L0.1909171245410.1590-100000@iolanthe.rowland.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver was using its struct usb_device pointer as an inverted
disconnected flag, but was setting it to NULL before making sure all
completion handlers had run. This could lead to a NULL-pointer
dereference in a number of dev_dbg statements in the completion handlers
which relies on said pointer.
The pointer was also dereferenced unconditionally in a dev_dbg statement
release() something which would lead to a NULL-deref whenever a device
was disconnected before the final character-device close if debugging
was enabled.
Fix this by unconditionally stopping all I/O and preventing
resubmissions by poisoning the interrupt URBs at disconnect and using a
dedicated disconnected flag.
This also makes sure that all I/O has completed by the time the
disconnect callback returns.
Fixes: 1ef37c6047 ("USB: adutux: remove custom debug macro and module parameter")
Fixes: 66d4bc30d1 ("USB: adutux: remove custom debug macro")
Cc: stable <stable@vger.kernel.org> # 3.12
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190925092913.8608-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver was clearing its struct usb_device pointer, which it used as
an inverted disconnected flag, before deregistering the character device
and without serialising against racing release().
This could lead to a use-after-free if a racing release() callback
observes the cleared pointer and frees the driver data before
disconnect() is finished with it.
This could also lead to NULL-pointer dereferences in a racing open().
Fixes: f08812d5eb ("USB: FIx locks and urb->status in adutux (updated)")
Cc: stable <stable@vger.kernel.org> # 2.6.24
Reported-by: syzbot+0243cb250a51eeefb8cc@syzkaller.appspotmail.com
Tested-by: syzbot+0243cb250a51eeefb8cc@syzkaller.appspotmail.com
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190925092913.8608-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Patch fix issue in cdns3_ep0_feature_handle_device function.
The function usleep_range can't be used there because this function is
called with locks held and IRQs disabled in
cdns3_device_thread_irq_handler().
To resolve this issue patch replaces usleep_range with mdelay.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Fixes: 7733f6c32e ("usb: cdns3: Add Cadence USB3 DRD Driver")
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Link: https://lore.kernel.org/r/1569484721-4424-1-git-send-email-pawell@cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We can't use "wrap" after it has been freed.
Fixes: 7733f6c32e ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20190904100102.GB7007@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add missing bulk-in endpoint sanity check to prevent uninitialised stack
data from being reported to the system log and used as endpoint
addresses.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Reported-by: syzbot+5630ca7c3b2be5c9da5e@syzkaller.appspotmail.com
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20191003070931.17009-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix NULL-pointer dereferences on open() and write() which can be
triggered by a malicious USB device.
The current URB allocation helper would fail to initialise the newly
allocated URB if the device has unexpected endpoint descriptors,
something which could lead NULL-pointer dereferences in a number of
open() and write() paths when accessing the URB. For example:
BUG: kernel NULL pointer dereference, address: 0000000000000000
...
RIP: 0010:usb_clear_halt+0x11/0xc0
...
Call Trace:
? tty_port_open+0x4d/0xd0
keyspan_open+0x70/0x160 [keyspan]
serial_port_activate+0x5b/0x80 [usbserial]
tty_port_open+0x7b/0xd0
? check_tty_count+0x43/0xa0
tty_open+0xf1/0x490
BUG: kernel NULL pointer dereference, address: 0000000000000000
...
RIP: 0010:keyspan_write+0x14e/0x1f3 [keyspan]
...
Call Trace:
serial_write+0x43/0xa0 [usbserial]
n_tty_write+0x1af/0x4f0
? do_wait_intr_irq+0x80/0x80
? process_echoes+0x60/0x60
tty_write+0x13f/0x2f0
BUG: kernel NULL pointer dereference, address: 0000000000000000
...
RIP: 0010:keyspan_usa26_send_setup+0x298/0x305 [keyspan]
...
Call Trace:
keyspan_open+0x10f/0x160 [keyspan]
serial_port_activate+0x5b/0x80 [usbserial]
tty_port_open+0x7b/0xd0
? check_tty_count+0x43/0xa0
tty_open+0xf1/0x490
Fixes: fdcba53e2d ("fix for bugzilla #7544 (keyspan USB-to-serial converter)")
Cc: stable <stable@vger.kernel.org> # 2.6.21
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The Rio500 kernel driver has not been used by Rio500 owners since 2001
not long after the rio500 project added support for a user-space USB stack
through the very first versions of usbdevfs and then libusb.
Support for the kernel driver was removed from the upstream utilities
in 2008:
943f624ab7
Cc: Cesar Miquel <miquel@df.uba.ar>
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/6251c17584d220472ce882a3d9c199c401a51a71.camel@hadess.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull more mount API conversions from Al Viro:
"Assorted conversions of options parsing to new API.
gfs2 is probably the most serious one here; the rest is trivial stuff.
Other things in what used to be #work.mount are going to wait for the
next cycle (and preferably go via git trees of the filesystems
involved)"
* 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
gfs2: Convert gfs2 to fs_context
vfs: Convert spufs to use the new mount API
vfs: Convert hypfs to use the new mount API
hypfs: Fix error number left in struct pointer member
vfs: Convert functionfs to use the new mount API
vfs: Convert bpf to use the new mount API
Summary of modules changes for the 5.4 merge window:
- Introduce exported symbol namespaces.
This new feature allows subsystem maintainers to partition and
categorize their exported symbols into explicit namespaces. Module
authors are now required to import the namespaces they need.
Some of the main motivations of this feature include: allowing kernel
developers to better manage the export surface, allow subsystem
maintainers to explicitly state that usage of some exported symbols
should only be limited to certain users (think: inter-module or
inter-driver symbols, debugging symbols, etc), as well as more easily
limiting the availability of namespaced symbols to other parts of the
kernel. With the module import requirement, it is also easier to spot
the misuse of exported symbols during patch review. Two new macros are
introduced: EXPORT_SYMBOL_NS() and EXPORT_SYMBOL_NS_GPL(). The API is
thoroughly documented in Documentation/kbuild/namespaces.rst.
- Some small code and kbuild cleanups here and there.
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Merge tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull modules updates from Jessica Yu:
"The main bulk of this pull request introduces a new exported symbol
namespaces feature. The number of exported symbols is increasingly
growing with each release (we're at about 31k exports as of 5.3-rc7)
and we currently have no way of visualizing how these symbols are
"clustered" or making sense of this huge export surface.
Namespacing exported symbols allows kernel developers to more
explicitly partition and categorize exported symbols, as well as more
easily limiting the availability of namespaced symbols to other parts
of the kernel. For starters, we have introduced the USB_STORAGE
namespace to demonstrate the API's usage. I have briefly summarized
the feature and its main motivations in the tag below.
Summary:
- Introduce exported symbol namespaces.
This new feature allows subsystem maintainers to partition and
categorize their exported symbols into explicit namespaces. Module
authors are now required to import the namespaces they need.
Some of the main motivations of this feature include: allowing
kernel developers to better manage the export surface, allow
subsystem maintainers to explicitly state that usage of some
exported symbols should only be limited to certain users (think:
inter-module or inter-driver symbols, debugging symbols, etc), as
well as more easily limiting the availability of namespaced symbols
to other parts of the kernel.
With the module import requirement, it is also easier to spot the
misuse of exported symbols during patch review.
Two new macros are introduced: EXPORT_SYMBOL_NS() and
EXPORT_SYMBOL_NS_GPL(). The API is thoroughly documented in
Documentation/kbuild/namespaces.rst.
- Some small code and kbuild cleanups here and there"
* tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: Remove leftover '#undef' from export header
module: remove unneeded casts in cmp_name()
module: move CONFIG_UNUSED_SYMBOLS to the sub-menu of MODULES
module: remove redundant 'depends on MODULES'
module: Fix link failure due to invalid relocation on namespace offset
usb-storage: export symbols in USB_STORAGE namespace
usb-storage: remove single-use define for debugging
docs: Add documentation for Symbol Namespaces
scripts: Coccinelle script for namespace dependencies.
modpost: add support for generating namespace dependencies
export: allow definition default namespaces in Makefiles or sources
module: add config option MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
modpost: add support for symbol namespaces
module: add support for symbol namespaces.
export: explicitly align struct kernel_symbol
module: support reading multiple values per modinfo tag
Convert the functionfs filesystem to the new internal mount API as the old
one will be obsoleted and removed. This allows greater flexibility in
communication of mount parameters between userspace, the VFS and the
filesystem.
See Documentation/filesystems/mount_api.txt for more information.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
cc: linux-usb@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Here is the big set of USB patches for 5.4-rc1.
Two major chunks of code are moving out of the tree and into the staging
directory, uwb and wusb (wireless USB support), because there are no
devices that actually use this protocol anymore, and what we have today
probably doesn't work at all given that the maintainers left many many
years ago. So move it to staging where it will be removed in a few
releases if no one screams.
Other than that, lots of little things. The usual gadget and xhci and
usb serial driver updates, along with a bunch of sysfs file cleanups due
to the driver core changes to support that. Nothing really major, just
constant forward progress.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB updates from Greg KH:
"Here is the big set of USB patches for 5.4-rc1.
Two major chunks of code are moving out of the tree and into the
staging directory, uwb and wusb (wireless USB support), because there
are no devices that actually use this protocol anymore, and what we
have today probably doesn't work at all given that the maintainers
left many many years ago. So move it to staging where it will be
removed in a few releases if no one screams.
Other than that, lots of little things. The usual gadget and xhci and
usb serial driver updates, along with a bunch of sysfs file cleanups
due to the driver core changes to support that. Nothing really major,
just constant forward progress.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (159 commits)
USB: usbcore: Fix slab-out-of-bounds bug during device reset
usb: cdns3: Remove redundant dev_err call in cdns3_probe()
USB: rio500: Fix lockdep violation
USB: rio500: simplify locking
usb: mtu3: register a USB Role Switch for dual role mode
usb: common: add USB GPIO based connection detection driver
usb: common: create Kconfig file
usb: roles: get usb-role-switch from parent
usb: roles: Add fwnode_usb_role_switch_get() function
device connection: Add fwnode_connection_find_match()
usb: roles: Introduce stubs for the exiting functions in role.h
dt-bindings: usb: mtu3: add properties about USB Role Switch
dt-bindings: usb: add binding for USB GPIO based connection detection driver
dt-bindings: connector: add optional properties for Type-B
dt-binding: usb: add usb-role-switch property
usbip: Implement SG support to vhci-hcd and stub driver
usb: roles: intel: Enable static DRD mode for role switch
xhci-ext-caps.c: Add property to disable Intel SW switch
usb: dwc3: remove generic PHY calibrate() calls
usb: core: phy: add support for PHY calibration
...
Improve software node support (Heikki Krogerus) and clean up two
assorted pieces of code (Andy Shevchenko, Geert Uytterhoeven).
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Merge tag 'devprop-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull device properties framework updates from Rafael Wysocki:
"Improve software node support (Heikki Krogerus) and clean up two
assorted pieces of code (Andy Shevchenko, Geert Uytterhoeven)"
* tag 'devprop-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
software node: Initialize the return value in software_node_find_by_name()
software node: Initialize the return value in software_node_to_swnode()
ACPI / property: Fix acpi_graph_get_remote_endpoint() name in kerneldoc
device property: Remove duplicate test for NULL
platform/x86: intel_cht_int33fe: Use new API to gain access to the role switch
usb: roles: intel_xhci: Supplying software node for the role mux
software node: Add software_node_find_by_name()
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Merge tag 'leds-for-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED updates from Jacek Anaszewski:
"In this cycle we've finally managed to contribute the patch set
sorting out LED naming issues. Besides that there are many changes
scattered among various LED class drivers and triggers.
LED naming related improvements:
- add new 'function' and 'color' fwnode properties and deprecate
'label' property which has been frequently abused for conveying
vendor specific names that have been available in sysfs anyway
- introduce a set of standard LED_FUNCTION* definitions
- introduce a set of standard LED_COLOR_ID* definitions
- add a new {devm_}led_classdev_register_ext() API with the
capability of automatic LED name composition basing on the
properties available in the passed fwnode; the function is
backwards compatible in a sense that it uses 'label' data, if
present in the fwnode, for creating LED name
- add tools/leds/get_led_device_info.sh script for retrieving LED
vendor, product and bus names, if applicable; it also performs
basic validation of an LED name
- update following drivers and their DT bindings to use the new LED
registration API:
- leds-an30259a, leds-gpio, leds-as3645a, leds-aat1290, leds-cr0014114,
leds-lm3601x, leds-lm3692x, leds-lp8860, leds-lt3593, leds-sc27xx-blt
Other LED class improvements:
- replace {devm_}led_classdev_register() macros with inlines
- allow to call led_classdev_unregister() unconditionally
- switch to use fwnode instead of be stuck with OF one
LED triggers improvements:
- led-triggers:
- fix dereferencing of null pointer
- fix a memory leak bug
- ledtrig-gpio:
- GPIO 0 is valid
Drop superseeded apu2/3 support from leds-apu since for apu2+ a newer,
more complete driver exists, based on a generic driver for the AMD
SOCs gpio-controller, supporting LEDs as well other devices:
- drop profile field from priv data
- drop iosize field from priv data
- drop enum_apu_led_platform_types
- drop superseeded apu2/3 led support
- add pr_fmt prefix for better log output
- fix error message on probing failure
Other misc fixes and improvements to existing LED class drivers:
- leds-ns2, leds-max77650:
- add of_node_put() before return
- leds-pwm, leds-is31fl32xx:
- use struct_size() helper
- leds-lm3697, leds-lm36274, leds-lm3532:
- switch to use fwnode_property_count_uXX()
- leds-lm3532:
- fix brightness control for i2c mode
- change the define for the fs current register
- fixes for the driver for stability
- add full scale current configuration
- dt: Add property for full scale current.
- avoid potentially unpaired regulator calls
- move static keyword to the front of declarations
- fix optional led-max-microamp prop error handling
- leds-max77650:
- add of_node_put() before return
- add MODULE_ALIAS()
- Switch to fwnode property API
- leds-as3645a:
- fix misuse of strlcpy
- leds-netxbig:
- add of_node_put() in netxbig_leds_get_of_pdata()
- remove legacy board-file support
- leds-is31fl319x:
- simplify getting the adapter of a client
- leds-ti-lmu-common:
- fix coccinelle issue
- move static keyword to the front of declaration
- leds-syscon:
- use resource managed variant of device register
- leds-ktd2692:
- fix a typo in the name of a constant
- leds-lp5562:
- allow firmware files up to the maximum length
- leds-an30259a:
- fix typo
- leds-pca953x:
- include the right header"
* tag 'leds-for-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds: (72 commits)
leds: lm3532: Fix optional led-max-microamp prop error handling
led: triggers: Fix dereferencing of null pointer
leds: ti-lmu-common: Move static keyword to the front of declaration
leds: lm3532: Move static keyword to the front of declarations
leds: trigger: gpio: GPIO 0 is valid
leds: pwm: Use struct_size() helper
leds: is31fl32xx: Use struct_size() helper
leds: ti-lmu-common: Fix coccinelle issue in TI LMU
leds: lm3532: Avoid potentially unpaired regulator calls
leds: syscon: Use resource managed variant of device register
leds: Replace {devm_}led_classdev_register() macros with inlines
leds: Allow to call led_classdev_unregister() unconditionally
leds: lm3532: Add full scale current configuration
dt: lm3532: Add property for full scale current.
leds: lm3532: Fixes for the driver for stability
leds: lm3532: Change the define for the fs current register
leds: lm3532: Fix brightness control for i2c mode
leds: Switch to use fwnode instead of be stuck with OF one
leds: max77650: Switch to fwnode property API
led: triggers: Fix a memory leak bug
...
The main change this time around is a cleanup of some of the oldest
platforms based on the XScale and ARM9 CPU cores, which are between 10
and 20 years old.
The Kendin/Micrel/Microchip KS8695, Winbond/Nuvoton W90x900 and Intel
IOP33x/IOP13xx platforms are removed after we determined that nobody is
using them any more.
The TI Davinci and NXP LPC32xx platforms on the other hand are still in
active use and are converted to the ARCH_MULTIPLATFORM build, meaning
that we can compile a kernel that works on these along with most other
ARMv5 platforms. Changes toward that goal are also merged for IOP32x,
but additional work is needed to complete this. Patches for the
remaining ARMv5 platforms have started but need more work and some
testing.
Support for the new ASpeed AST2600 gets added, this is based on the
Cortex-A7 ARMv7 core, and is a newer version of the existing ARMv5 and
ARMv6 chips in the same family.
Other changes include a cleanup of the ST-Ericsson ux500 platform
and the move of the TI Davinci platform to a new clocksource driver.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Arnd Bergmann:
"The main change this time around is a cleanup of some of the oldest
platforms based on the XScale and ARM9 CPU cores, which are between 10
and 20 years old.
The Kendin/Micrel/Microchip KS8695, Winbond/Nuvoton W90x900 and Intel
IOP33x/IOP13xx platforms are removed after we determined that nobody
is using them any more.
The TI Davinci and NXP LPC32xx platforms on the other hand are still
in active use and are converted to the ARCH_MULTIPLATFORM build,
meaning that we can compile a kernel that works on these along with
most other ARMv5 platforms. Changes toward that goal are also merged
for IOP32x, but additional work is needed to complete this. Patches
for the remaining ARMv5 platforms have started but need more work and
some testing.
Support for the new ASpeed AST2600 gets added, this is based on the
Cortex-A7 ARMv7 core, and is a newer version of the existing ARMv5 and
ARMv6 chips in the same family.
Other changes include a cleanup of the ST-Ericsson ux500 platform and
the move of the TI Davinci platform to a new clocksource driver"
[ The changes had marked INTEL_IOP_ADMA and USB_LPC32XX as being
buildable on other platforms through COMPILE_TEST, but that causes new
warnings that I most definitely do not want to see during the merge
window as that could hide other issues.
So the COMPILE_TEST option got disabled for them again - Linus ]
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (61 commits)
ARM: multi_v5_defconfig: make DaVinci part of the ARM v5 multiplatform build
ARM: davinci: support multiplatform build for ARM v5
arm64: exynos: Enable exynos-chipid driver
ARM: OMAP2+: Delete an unnecessary kfree() call in omap_hsmmc_pdata_init()
ARM: OMAP2+: move platform-specific asm-offset.h to arch/arm/mach-omap2
ARM: davinci: dm646x: Fix a typo in the comment
ARM: davinci: dm646x: switch to using the clocksource driver
ARM: davinci: dm644x: switch to using the clocksource driver
ARM: aspeed: Enable SMP boot
ARM: aspeed: Add ASPEED AST2600 architecture
ARM: aspeed: Select timer in each SoC
dt-bindings: arm: cpus: Add ASPEED SMP
ARM: imx: stop adjusting ar8031 phy tx delay
mailmap: map old company name to new one @microchip.com
MAINTAINERS: at91: remove the TC entry
MAINTAINERS: at91: Collect all pinctrl/gpio drivers in same entry
ARM: at91: move platform-specific asm-offset.h to arch/arm/mach-at91
MAINTAINERS: Extend patterns for Samsung SoC, Security Subsystem and clock drivers
ARM: s3c64xx: squash samsung_usb_phy.h into setup-usb-phy.c
ARM: debug-ll: Add support for r7s9210
...
Modules using these symbols are required to explicitly import the
namespace. This patch was generated with the following steps and serves
as a reference to use the symbol namespace feature:
1) Define DEFAULT_SYMBOL_NAMESPACE in the corresponding Makefile
2) make (see warnings during modpost about missing imports)
3) make nsdeps
Instead of a DEFAULT_SYMBOL_NAMESPACE definition, the EXPORT_SYMBOL_NS
variants can be used to explicitly specify the namespace. The advantage
of the method used here is that newly added symbols are automatically
exported and existing ones are exported without touching their
respective EXPORT_SYMBOL macro expansion.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
USB_STORAGE was defined as "usb-storage: " and used in a single location
as argument to printk. In order to be able to use the name
'USB_STORAGE', drop the definition and use the string directly for the
printk call.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'usb-ci-v5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next
Peter writes:
Add role switch class support for chipidea
* tag 'usb-ci-v5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb:
usb: chipidea: msm: Use device-managed registration API
usb: chipidea: add role switch class support
dt-binding: usb: usbmisc-imx: add imx7ulp compatible
dt-binding: usb: ci-hdrc-usb2: add imx7ulp compatible
The syzbot fuzzer provoked a slab-out-of-bounds error in the USB core:
BUG: KASAN: slab-out-of-bounds in memcmp+0xa6/0xb0 lib/string.c:904
Read of size 1 at addr ffff8881d175bed6 by task kworker/0:3/2746
CPU: 0 PID: 2746 Comm: kworker/0:3 Not tainted 5.3.0-rc5+ #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xca/0x13e lib/dump_stack.c:113
print_address_description+0x6a/0x32c mm/kasan/report.c:351
__kasan_report.cold+0x1a/0x33 mm/kasan/report.c:482
kasan_report+0xe/0x12 mm/kasan/common.c:612
memcmp+0xa6/0xb0 lib/string.c:904
memcmp include/linux/string.h:400 [inline]
descriptors_changed drivers/usb/core/hub.c:5579 [inline]
usb_reset_and_verify_device+0x564/0x1300 drivers/usb/core/hub.c:5729
usb_reset_device+0x4c1/0x920 drivers/usb/core/hub.c:5898
rt2x00usb_probe+0x53/0x7af
drivers/net/wireless/ralink/rt2x00/rt2x00usb.c:806
The error occurs when the descriptors_changed() routine (called during
a device reset) attempts to compare the old and new BOS and capability
descriptors. The length it uses for the comparison is the
wTotalLength value stored in BOS descriptor, but this value is not
necessarily the same as the length actually allocated for the
descriptors. If it is larger the routine will call memcmp() with a
length that is too big, thus reading beyond the end of the allocated
region and leading to this fault.
The kernel reads the BOS descriptor twice: first to get the total
length of all the capability descriptors, and second to read it along
with all those other descriptors. A malicious (or very faulty) device
may send different values for the BOS descriptor fields each time.
The memory area will be allocated using the wTotalLength value read
the first time, but stored within it will be the value read the second
time.
To prevent this possibility from causing any errors, this patch
modifies the BOS descriptor after it has been read the second time:
It sets the wTotalLength field to the actual length of the descriptors
that were read in and validated. Then the memcpy() call, or any other
code using these descriptors, will be able to rely on wTotalLength
being valid.
Reported-and-tested-by: syzbot+35f4d916c623118d576e@syzkaller.appspotmail.com
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/Pine.LNX.4.44L0.1909041154260.1722-100000@iolanthe.rowland.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are the USB-serial updates for 5.4-rc1, which this time is just a
single commit adding support for the CBUS GPIOs on FT232H devices.
This change has spent a week in linux-next with no reported issues.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-5.4-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB-serial updates for 5.4-rc1
Here are the USB-serial updates for 5.4-rc1, which this time is just a
single commit adding support for the CBUS GPIOs on FT232H devices.
This change has spent a week in linux-next with no reported issues.
Signed-off-by: Johan Hovold <johan@kernel.org>
* tag 'usb-serial-5.4-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: ftdi_sio: add support for FT232H CBUS gpios
There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20190903153625.85691-1-weiyongjun1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The syzbot fuzzer found a lockdep violation in the rio500 driver:
======================================================
WARNING: possible circular locking dependency detected
5.3.0-rc2+ #23 Not tainted
------------------------------------------------------
syz-executor.2/20386 is trying to acquire lock:
00000000772249c6 (rio500_mutex){+.+.}, at: open_rio+0x16/0xc0
drivers/usb/misc/rio500.c:64
but task is already holding lock:
00000000d3e8f4b9 (minor_rwsem){++++}, at: usb_open+0x23/0x270
drivers/usb/core/file.c:39
which lock already depends on the new lock.
The problem is that the driver's open_rio() routine is called while
the usbcore's minor_rwsem is locked for reading, and it acquires the
rio500_mutex; whereas conversely, probe_rio() and disconnect_rio()
first acquire the rio500_mutex and then call usb_register_dev() or
usb_deregister_dev(), which lock minor_rwsem for writing.
The correct ordering of acquisition should be: minor_rwsem first, then
rio500_mutex (since the locking in open_rio() cannot be changed).
Thus, the probe and disconnect routines should avoid holding
rio500_mutex while doing their registration and deregistration.
This patch adjusts the code in those two routines to do just that. It
also relies on the fact that the probe and disconnect routines are
protected by the device mutex, so the initial test of rio->present
needs no extra locking.
Reported-by: syzbot+7bbcbe9c9ff0cd49592a@syzkaller.appspotmail.com
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Fixes: d710734b06 ("USB: rio500: simplify locking")
Acked-by: Oliver Neukum <oneukum@suse.com>
CC: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/Pine.LNX.4.44L0.1908081329240.1319-100000@iolanthe.rowland.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Admitting that there can be only one device allows us to drop any
pretense about locking one device or a table of devices.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Because extcon is not allowed for new bindings, and the
dual role switch is supported by USB Role Switch,
especially for Type-C drivers, so register a USB Role
Switch to support the new way
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1567070558-29417-12-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Due to the requirement of usb-connector.txt binding, the old way
using extcon to support USB Dual-Role switch is now deprecated
when use Type-B connector.
This patch introduces a USB GPIO based connection detection driver,
used to support Type-B connector which typically uses an input GPIO
to detect USB ID pin, and try to replace the function provided
by the extcon-usb-gpio driver
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Nagarjuna Kristam <nkristam@nvidia.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/1567070558-29417-11-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Create Kconfig file for USB common core, and move USB_LED_TRIG
and USB_ULPI_BUS configs into the new file from the parent Kconfig,
it will help to add new configs later.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1567070558-29417-10-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
when the USB host controller is the parent of the connector,
usually type-B, sometimes don't need the graph, so we should
check whether it's parent registers usb-role-switch or not
firstly, and get it if exists.
Suggested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1567070558-29417-9-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The fwnode_usb_role_switch_get() function is exactly the
same as usb_role_switch_get(), except that it takes struct
fwnode_handle as parameter instead of struct device.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Biju Das <biju.das@bp.renesas.com>
Link: https://lore.kernel.org/r/1567070558-29417-8-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There are bugs on vhci with usb 3.0 storage device. In USB, each SG
list entry buffer should be divisible by the bulk max packet size.
But with native SG support, this problem doesn't matter because the
SG buffer is treated as contiguous buffer. But without native SG
support, USB storage driver breaks SG list into several URBs and the
error occurs because of a buffer size of URB that cannot be divided
by the bulk max packet size. The error situation is as follows.
When USB Storage driver requests 31.5 KB data and has SG list which
has 3584 bytes buffer followed by 7 4096 bytes buffer for some
reason. USB Storage driver splits this SG list into several URBs
because VHCI doesn't support SG and sends them separately. So the
first URB buffer size is 3584 bytes. When receiving data from device,
USB 3.0 device sends data packet of 1024 bytes size because the max
packet size of BULK pipe is 1024 bytes. So device sends 4096 bytes.
But the first URB buffer has only 3584 bytes buffer size. So host
controller terminates the transfer even though there is more data to
receive. So, vhci needs to support SG transfer to prevent this error.
In this patch, vhci supports SG regardless of whether the server's
host controller supports SG or not, because stub driver splits SG
list into several URBs if the server's host controller doesn't
support SG.
To support SG, vhci sets URB_DMA_MAP_SG flag in urb->transfer_flags
if URB has SG list and this flag will tell stub driver to use SG
list. After receiving urb from stub driver, vhci clear URB_DMA_MAP_SG
flag to avoid unnecessary DMA unmapping in HCD.
vhci sends each SG list entry to stub driver. Then, stub driver sees
the total length of the buffer and allocates SG table and pages
according to the total buffer length calling sgl_alloc(). After stub
driver receives completed URB, it again sends each SG list entry to
vhci.
If the server's host controller doesn't support SG, stub driver
breaks a single SG request into several URBs and submits them to
the server's host controller. When all the split URBs are completed,
stub driver reassembles the URBs into a single return command and
sends it to vhci.
Moreover, in the situation where vhci supports SG, but stub driver
does not, or vice versa, usbip works normally. Because there is no
protocol modification, there is no problem in communication between
server and client even if the one has a kernel without SG support.
In the case of vhci supports SG and stub driver doesn't, because
vhci sends only the total length of the buffer to stub driver as
it did before the patch applied, stub driver only needs to allocate
the required length of buffers using only kmalloc() regardless of
whether vhci supports SG or not. But stub driver has to allocate
buffer with kmalloc() as much as the total length of SG buffer which
is quite huge when vhci sends SG request, so it has overhead in
buffer allocation in this situation.
If stub driver needs to send data buffer to vhci because of IN pipe,
stub driver also sends only total length of buffer as metadata and
then sends real data as vhci does. Then vhci receive data from stub
driver and store it to the corresponding buffer of SG list entry.
And for the case of stub driver supports SG and vhci doesn't, since
the USB storage driver checks that vhci doesn't support SG and sends
the request to stub driver by splitting the SG list into multiple
URBs, stub driver allocates a buffer for each URB with kmalloc() as
it did before this patch.
* Test environment
Test uses two difference machines and two different kernel version
to make mismatch situation between the client and the server where
vhci supports SG, but stub driver does not, or vice versa. All tests
are conducted in both full SG support that both vhci and stub support
SG and half SG support that is the mismatch situation. Test kernel
version is 5.3-rc6 with commit "usb: add a HCD_DMA flag instead of
guestimating DMA capabilities" to avoid unnecessary DMA mapping and
unmapping.
- Test kernel version
- 5.3-rc6 with SG support
- 5.1.20-200.fc29.x86_64 without SG support
* SG support test
- Test devices
- Super-speed storage device - SanDisk Ultra USB 3.0
- High-speed storage device - SMI corporation USB 2.0 flash drive
- Test description
Test read and write operation of mass storage device that uses the
BULK transfer. In test, the client reads and writes files whose size
is over 1G and it works normally.
* Regression test
- Test devices
- Super-speed device - Logitech Brio webcam
- High-speed device - Logitech C920 HD Pro webcam
- Full-speed device - Logitech bluetooth mouse
- Britz BR-Orion speaker
- Low-speed device - Logitech wired mouse
- Test description
Moving and click test for mouse. To test the webcam, use gnome-cheese.
To test the speaker, play music and video on the client. All works
normally.
* VUDC compatibility test
VUDC also works well with this patch. Tests are done with two USB
gadget created by CONFIGFS USB gadget. Both use the BULK pipe.
1. Serial gadget
2. Mass storage gadget
- Serial gadget test
Serial gadget on the host sends and receives data using cat command
on the /dev/ttyGS<N>. The client uses minicom to communicate with
the serial gadget.
- Mass storage gadget test
After connecting the gadget with vhci, use "dd" to test read and
write operation on the client side.
Read - dd if=/dev/sd<N> iflag=direct of=/dev/null bs=1G count=1
Write - dd if=<my file path> iflag=direct of=/dev/sd<N> bs=1G count=1
Signed-off-by: Suwan Kim <suwan.kim027@gmail.com>
Acked-by: Shuah khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20190828032741.12234-1-suwan.kim027@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Enable static DRD mode in Intel platforms which guarantees
successful role switch all the time. This fixes issues like
software role switch failure after cold boot and issue with
role switch when USB 3.0 cable is used. But, do not enable
static DRD mode for Cherrytrail devices which rely on firmware
for role switch.
Signed-off-by: Saranya Gopal <saranya.gopal@intel.com>
Signed-off-by: Balaji Manoharan <m.balaji@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/1567079760-24822-2-git-send-email-saranya.gopal@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In platforms like Cherrytrail, 'SW switch enable' bit
should not be enabled for role switch. This patch
adds a property to Intel USB Role Switch platform driver
to denote that SW switch should be disabled in
Cherrytrail devices.
Signed-off-by: Saranya Gopal <saranya.gopal@intel.com>
Signed-off-by: Balaji Manoharan <m.balaji@intel.com>
Suggested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/1567079760-24822-1-git-send-email-saranya.gopal@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Calls to USB2 generic PHY calibrate() method has been moved to HCD core,
which now successfully handles generic PHYs and their calibration after
every HCD reset. This fixes all the timing issues related to PHY
calibration done directly from DWC3 driver: incorrect operation after
system suspend/resume or USB3.0 detection failure when XHCI-plat driver
compiled as separate module.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Tested-by: Jochen Sprickerhof <jochen@sprickerhof.de>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Link: https://lore.kernel.org/r/20190829053028.32438-3-m.szyprowski@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some PHYs (for example Exynos5 USB3.0 DRD PHY) require calibration to be
done after every USB HCD reset. Generic PHY framework has been already
extended with phy_calibrate() function in commit 36914111e6 ("drivers:
phy: add calibrate method"). This patch adds support for it to generic
PHY handling code in USB HCD core.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Tested-by: Jochen Sprickerhof <jochen@sprickerhof.de>
Link: https://lore.kernel.org/r/20190829053028.32438-2-m.szyprowski@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch uses xhci_plat_priv.quirks to simplify. The previous
code had conditions to set some quirks in xhci_rcar_init_quirk().
But, the xhci_rcar_init_quirk() is called at the same conditions.
So, no behavior change.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1567425698-27560-4-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To simplify adding xhci->quirks instead of the .init_quirk()
function, this patch adds a new parameter "quirks" into
the struct xhci_plat_priv.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1567425698-27560-2-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Xhci re-enables a slot on transaction error in set_address using
xhci_disable_slot() + xhci_alloc_dev().
But in this case, xhci_alloc_dev() creates debugfs entries upon an
existing device without cleaning up old entries, thus memory leaks.
So this patch simply moves calling xhci_debugfs_free_dev() from
xhci_free_dev() to xhci_disable_slot().
[added "possible" to header as this is about failure codepath -Mathias]
Signed-off-by: Ikjoon Jang <ikjn@chromium.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1567172356-12915-5-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Software can set a Transfer State Preserve (TSP) flag to maintain
data toggle and sequence number when issuing a reset endpoint
command.
xhci driver is using TSP for soft retry, we want to show TSP usage
in tracing as well
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1567172356-12915-4-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is no need to use GFP_ATOMIC to allocate 'req'. GFP_KERNEL should be
enough and is already used for another allocation juste a few lines below.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1567172356-12915-3-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the 'kmalloc()' fails, we need to undo the previous
'dbc_alloc_request()' call.
Because of the more similar function name, it is more logical to use
'dbc_free_request()' instead of 'xhci_dbc_free_req()'.
Both are equivalent here because:
static void xhci_dbc_free_req(struct dbc_ep *dep, struct dbc_request *req)
{
kfree(req->buf);
dbc_free_request(dep, req);
}
and 'req->buf' is known to be NULL at this point
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1567172356-12915-2-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently the check on a non-zero return code in ret is false because
ret has been initialized to zero. I believe that ret should be assigned
to the return from the call to readl_poll_timeout_atomic before the
check on ret. Since ret is being re-assinged the original initialization
of ret to zero can be removed.
Addresses-Coverity: ("'Constant' variable guards dead code")
Fixes: 7733f6c32e ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190902145035.18200-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the case where an allocation fails for priv_ep ret is
assigned -ENOMEM and the code exits via the exit path 'err'.
The exit path returns -ENOMEM without using variable ret, so
the assingment is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190902184334.27406-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If CONFIG_REGMAP_I2C is not set, building fails:
drivers/usb/typec/tps6598x.o: In function `tps6598x_probe':
tps6598x.c:(.text+0x5f0): undefined reference to `__devm_regmap_init_i2c'
Select REGMAP_I2C to fix this.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 0a4c005bd1 ("usb: typec: driver for TI TPS6598x USB Power Delivery controllers")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20190903121026.22148-1-yuehaibing@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/usb/cdns3/gadget.c: In function '__cdns3_gadget_init':
drivers/usb/cdns3/gadget.c:2665:23: warning:
variable 'priv_dev' set but not used [-Wunused-but-set-variable]
drivers/usb/cdns3/gadget.c: In function cdns3_start_all_request:
drivers/usb/cdns3/gadget.c:357:24: warning:
variable priv_req set but not used [-Wunused-but-set-variable]
They are never used, so can be removed.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20190903120445.22204-1-yuehaibing@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/cdns3/ep0.c: In function cdns3_ep0_feature_handle_device:
drivers/usb/cdns3/ep0.c:290:6: warning: variable wIndex set but not used [-Wunused-but-set-variable]
drivers/usb/cdns3/ep0.c:289:6: warning: variable wValue set but not used [-Wunused-but-set-variable]
wIndex is never used, so remove it.
wValue should be use in the switch statement.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 7733f6c32e ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20190903120615.19504-1-yuehaibing@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These wrappers have never seen use and have been commented out
for a long time. Remove them for good.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20190903084615.19161-6-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Now that we have the local memory pool implemented there is no
need to use dma_declare_coherent_memory.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20190903084615.19161-5-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The dma_mask on its own doesn't mean much. Instead check for the actual
flag.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20190903084615.19161-4-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This driver doesn't support normal DMA, only direct access to its
local memory. Remove the HCD_DMA flag to properly express that fact.
Fixes: 7b81cb6bdd ("usb: add a HCD_DMA flag instead of guestimating DMA capabilities")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20190903084615.19161-3-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This driver doesn't support normal DMA, only direct access to its
local memory. Remove the HCD_DMA flag to properly express that fact.
Fixes: 7b81cb6bdd ("usb: add a HCD_DMA flag instead of guestimating DMA capabilities")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20190903084615.19161-2-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use devm_reset_controller_register to get rid
of manual unregistration.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
With only 45 non-merge commits, we have a small merge window from the
Gadget perspective.
The biggest change here is the addition of the Cadence USB3 DRD
Driver. All other changes are small, non-critical fixes or smaller new
features like the improvement to BESL handling in dwc3.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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Merge tag 'usb-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
USB: Changes for v5.4 merge window
With only 45 non-merge commits, we have a small merge window from the
Gadget perspective.
The biggest change here is the addition of the Cadence USB3 DRD
Driver. All other changes are small, non-critical fixes or smaller new
features like the improvement to BESL handling in dwc3.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
* tag 'usb-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (45 commits)
usb: gadget: net2280: Add workaround for AB chip Errata 11
usb: gadget: net2280: Move all "ll" registers in one structure
usb: dwc3: gadget: Workaround Mirosoft's BESL check
usb:cdns3 Fix for stuck packets in on-chip OUT buffer.
usb: cdns3: Add Cadence USB3 DRD Driver
usb: common: Simplify usb_decode_get_set_descriptor function.
usb: common: Patch simplify usb_decode_set_clear_feature function.
usb: common: Separated decoding functions from dwc3 driver.
dt-bindings: add binding for USBSS-DRD controller.
usb: gadget: composite: Set recommended BESL values
usb: dwc3: gadget: Set BESL config parameter
usb: dwc3: Separate field holding multiple properties
usb: gadget: Export recommended BESL values
usb: phy: phy-fsl-usb: Make structure fsl_otg_initdata constant
usb: udc: lpc32xx: silence fall-through warning
usb: dwc3: meson-g12a: fix suspend resume regulator unbalanced disables
usb: udc: lpc32xx: remove set but not used 3 variables
usb: gadget: udc: core: Fix segfault if udc_bind_to_driver() for pending driver fails
usb: dwc3: st: Add of_dev_put() in probe function
usb: dwc3: st: Add of_node_put() before return in probe function
...
The errata description is:
Workaround for Default Duration of LFPS Handshake Signaling for
Device-Initiated U1 Exit is too short.
The default duration of the LFPS handshake generated by USB3380 for a device-initiated U1-exit may not be
long enough for certain SuperSpeed downstream ports (SuperSpeed hubs/hosts) to recognize. This could lead
to USB3380 entering the recovery state pre-maturely and ending up in the SS.Inactive state.
I have observed various enumeration failures, seemingly related to
lost transactions or SETUP status phases on modern hosts (typically
thunderbolt capable systems) without this workaround.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The split into multiple structures of the "ll" register bank is
impractical. It makes it hard to add ll_lfps_timers_2 which is
at offset 0x794, which is outside of the existing "lfps" structure
and would require us to add yet another one.
Instead, move all the "ll" registers into a single usb338x_ll_regs
structure, and add ll_lfps_timers_2 while at it. It will be used
in a subsequent patch.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
While testing our host system using Microsoft's usb stack against our
gadget for various BESL values, we found an issue with their usb stack
when the recommended baseline BESL value is 0 (125us) or when the deep
BESL is 1 or less. The Windows host will issue a usb reset immediately
after it receives the extended BOS descriptor and the enumeration will
fail after a few attempts.
To keep compatibility with Microsoft's host usb stack, let's workaround
this issue by using the recommended baseline BESL of 1 (or 150us)
and clamp the deep BESL value within 2 to 15.
This was tested against Windows 10 build 18956.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Controller for OUT endpoints has shared on-chip buffers for all incoming
packets, including ep0out. It's FIFO buffer, so packets must be handled
by DMA in correct order. If the first packet in the buffer will not be
handled, then the following packets directed for other endpoints and
functions will be blocked.
Additionally the packets directed to one endpoint can block entire on-chip
buffers. In this case transfer to other endpoints also will blocked.
To resolve this issue after raising the descriptor missing interrupt
driver prepares internal usb_request object and use it to arm DMA
transfer.
The problematic situation was observed in case when endpoint has
been enabled but no usb_request were queued. Driver try detects
such endpoints and will use this workaround only for these endpoint.
Driver use limited number of buffer. This number can be set by macro
CDNS_WA2_NUM_BUFFERS.
Such blocking situation was observed on ACM gadget. For this function
host send OUT data packet but ACM function is not prepared for
this packet. It's cause that buffer placed in on chip memory block
transfer to other endpoints.
Issue has been fixed for DEV_VER_V2 version of controller.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This patch introduce new Cadence USBSS DRD driver to Linux kernel.
The Cadence USBSS DRD Controller is a highly configurable IP Core which
can be instantiated as Dual-Role Device (DRD), Peripheral Only and
Host Only (XHCI)configurations.
The current driver has been validated with FPGA platform. We have
support for PCIe bus, which is used on FPGA prototyping.
The host side of USBSS-DRD controller is compliant with XHCI
specification, so it works with standard XHCI Linux driver.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Patch moves switch responsible for decoding descriptor type
outside snprintf. It improves code readability a little.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Patch adds usb_decode_test_mode and usb_decode_device_feature functions,
which allow to make more readable and simplify the
usb_decode_set_clear_feature function.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Patch moves some decoding functions from driver/usb/dwc3/debug.h driver
to driver/usb/common/debug.c file. These moved functions include:
dwc3_decode_get_status
dwc3_decode_set_clear_feature
dwc3_decode_set_address
dwc3_decode_get_set_descriptor
dwc3_decode_get_configuration
dwc3_decode_set_configuration
dwc3_decode_get_intf
dwc3_decode_set_intf
dwc3_decode_synch_frame
dwc3_decode_set_sel
dwc3_decode_set_isoch_delay
dwc3_decode_ctrl
These functions are used also in inroduced cdns3 driver.
All functions prefixes were changed from dwc3 to usb.
Also, function's parameters has been extended according to the name
of fields in standard SETUP packet.
Additionally, patch adds usb_decode_ctrl function to
include/linux/usb/ch9.h file.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Some SoCs may have an optional clock xhci_ck (125M or 200M), it
usually uses the same PLL as sys_ck, so support it.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/1566542425-20082-2-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In case of a disconnect an ongoing flush() has to be made fail.
Nevertheless we cannot be sure that any pending URB has already
finished, so although they will never succeed, they still must
not be touched.
The clean solution for this is to check for WDM_IN_USE
and WDM_DISCONNECTED in flush(). There is no point in ever
clearing WDM_IN_USE, as no further writes make sense.
The issue is as old as the driver.
Fixes: afba937e54 ("USB: CDC WDM driver")
Reported-by: syzbot+d232cca6ec42c2edb3fc@syzkaller.appspotmail.com
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20190827103436.21143-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It's spelled "renesas", not "renensas".
Due to this typo, RZ/G1M and RZ/G1N were not covered by the check.
Fixes: 2dc240a330 ("usb: host: xhci: rcar: retire use of xhci_plat_type_is()")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20190827125112.12192-1-geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Falcon microcontroller that runs the XUSB firmware and which is
responsible for exposing the XHCI interface can address only 40 bits of
memory. Typically that's not a problem because Tegra devices don't have
enough system memory to exceed those 40 bits.
However, if the ARM SMMU is enable on Tegra186 and later, the addresses
passed to the XUSB controller can be anywhere in the 48-bit IOV address
space of the ARM SMMU. Since the DMA/IOMMU API starts allocating from
the top of the IOVA space, the Falcon microcontroller is not able to
load the firmware successfully.
Fix this by setting the DMA mask to 40 bits, which will force the DMA
API to map the buffer for the firmware to an IOVA that is addressable by
the Falcon.
Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/1566989697-13049-1-git-send-email-nkristam@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Auto-delink requires writing special registers to ums-realtek devices.
Unconditionally enable auto-delink may break newer devices.
So only enable auto-delink by default for the original three IDs,
0x0138, 0x0158 and 0x0159.
Realtek is working on a patch to properly support auto-delink for other
IDs.
BugLink: https://bugs.launchpad.net/bugs/1838886
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20190827173450.13572-2-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The option named "auto_delink_en" is a bit misleading, as setting it to
false doesn't really disable auto-delink but let auto-delink be firmware
controlled.
Update the description to reflect the real usage of this parameter.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20190827173450.13572-1-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes an issue that the following error is
possible to happen when ohci hardware causes an interruption
and the system is shutting down at the same time.
[ 34.851754] usb 2-1: USB disconnect, device number 2
[ 35.166658] irq 156: nobody cared (try booting with the "irqpoll" option)
[ 35.173445] CPU: 0 PID: 22 Comm: kworker/0:1 Not tainted 5.3.0-rc5 #85
[ 35.179964] Hardware name: Renesas Salvator-X 2nd version board based on r8a77965 (DT)
[ 35.187886] Workqueue: usb_hub_wq hub_event
[ 35.192063] Call trace:
[ 35.194509] dump_backtrace+0x0/0x150
[ 35.198165] show_stack+0x14/0x20
[ 35.201475] dump_stack+0xa0/0xc4
[ 35.204785] __report_bad_irq+0x34/0xe8
[ 35.208614] note_interrupt+0x2cc/0x318
[ 35.212446] handle_irq_event_percpu+0x5c/0x88
[ 35.216883] handle_irq_event+0x48/0x78
[ 35.220712] handle_fasteoi_irq+0xb4/0x188
[ 35.224802] generic_handle_irq+0x24/0x38
[ 35.228804] __handle_domain_irq+0x5c/0xb0
[ 35.232893] gic_handle_irq+0x58/0xa8
[ 35.236548] el1_irq+0xb8/0x180
[ 35.239681] __do_softirq+0x94/0x23c
[ 35.243253] irq_exit+0xd0/0xd8
[ 35.246387] __handle_domain_irq+0x60/0xb0
[ 35.250475] gic_handle_irq+0x58/0xa8
[ 35.254130] el1_irq+0xb8/0x180
[ 35.257268] kernfs_find_ns+0x5c/0x120
[ 35.261010] kernfs_find_and_get_ns+0x3c/0x60
[ 35.265361] sysfs_unmerge_group+0x20/0x68
[ 35.269454] dpm_sysfs_remove+0x2c/0x68
[ 35.273284] device_del+0x80/0x370
[ 35.276683] hid_destroy_device+0x28/0x60
[ 35.280686] usbhid_disconnect+0x4c/0x80
[ 35.284602] usb_unbind_interface+0x6c/0x268
[ 35.288867] device_release_driver_internal+0xe4/0x1b0
[ 35.293998] device_release_driver+0x14/0x20
[ 35.298261] bus_remove_device+0x110/0x128
[ 35.302350] device_del+0x148/0x370
[ 35.305832] usb_disable_device+0x8c/0x1d0
[ 35.309921] usb_disconnect+0xc8/0x2d0
[ 35.313663] hub_event+0x6e0/0x1128
[ 35.317146] process_one_work+0x1e0/0x320
[ 35.321148] worker_thread+0x40/0x450
[ 35.324805] kthread+0x124/0x128
[ 35.328027] ret_from_fork+0x10/0x18
[ 35.331594] handlers:
[ 35.333862] [<0000000079300c1d>] usb_hcd_irq
[ 35.338126] [<0000000079300c1d>] usb_hcd_irq
[ 35.342389] Disabling IRQ #156
ohci_shutdown() disables all the interrupt and rh_state is set to
OHCI_RH_HALTED. In other hand, ohci_irq() is possible to enable
OHCI_INTR_SF and OHCI_INTR_MIE on ohci_irq(). Note that OHCI_INTR_SF
is possible to be set by start_ed_unlink() which is called:
ohci_irq()
-> process_done_list()
-> takeback_td()
-> start_ed_unlink()
So, ohci_irq() has the following condition, the issue happens by
&ohci->regs->intrenable = OHCI_INTR_MIE | OHCI_INTR_SF and
ohci->rh_state = OHCI_RH_HALTED:
/* interrupt for some other device? */
if (ints == 0 || unlikely(ohci->rh_state == OHCI_RH_HALTED))
return IRQ_NOTMINE;
To fix the issue, ohci_shutdown() holds the spin lock while disabling
the interruption and changing the rh_state flag to prevent reenable
the OHCI_INTR_MIE unexpectedly. Note that io_watchdog_func() also
calls the ohci_shutdown() and it already held the spin lock, so that
the patch makes a new function as _ohci_shutdown().
This patch is inspired by a Renesas R-Car Gen3 BSP patch
from Tho Vu.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/1566877910-6020-1-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Using managed device resources in usb_hcd_pci_probe() allows devm usage for
resource subranges, such as the mmio resource for the platform device
created to control host/device mode mux, which is a xhci extended
capability, and sits inside the xhci mmio region.
If managed device resources are not used then "parent" resource
is released before subrange at driver removal as .remove callback is
called before the devres list of resources for this device is walked
and released.
This has been observed with the xhci extended capability driver causing a
use-after-free which is now fixed.
An additional nice benefit is that error handling on driver initialisation
is simplified much.
Signed-off-by: Carsten Schmid <carsten_schmid@mentor.com>
Tested-by: Carsten Schmid <carsten_schmid@mentor.com>
Reviewed-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Fixes: fa31b3cb2a ("xhci: Add Intel extended cap / otg phy mux handling")
Cc: <stable@vger.kernel.org> # v4.19+
Link: https://lore.kernel.org/r/1566569488679.31808@mentor.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There appears to be a typo in the comparison of pdo_max_voltage[i]
with the previous value, currently it is checking against the
array pdo_min_voltage rather than pdo_max_voltage. I believe this
is a typo. Fix this.
Addresses-Coverity: ("Copy-paste error")
Fixes: 5007e1b5db ("typec: tcpm: Validate source and sink caps")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20190822135212.10195-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Enable support for cbus gpios on FT232H. The cbus configuration is
stored in two words in the EEPROM at byte-offset 0x1a with the mux
config for ACBUS5, ACBUS6, ACBUS8 and ACBUS9 (only pins that can be
configured as I/O mode).
Tested using FT232H by configuring one ACBUS pin at a time.
Reviewed-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Matthew Michilot <matthew.michilot@gmail.com>
[ johan: fix copy-paste error in commit message ]
Signed-off-by: Johan Hovold <johan@kernel.org>
Set the recommended BESL deep and baseline values based on the gadget's
configuration parameters to the extended BOS descriptor. This feature
helps to optimize power savings by maximizing the opportunity for longer
L1 residency time.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
When operating with LPM signals, the controller asserts the deep
low-power signal (utmi_l1_suspend_n) to the phy when the BESL value of
the LPM token is equal to or greater than DCTL.HIRD_Thres[3:0] (and
with DCTL.HIRD_Thres[4] set). Otherwise, the shallow low-power signal
(utmi_sleep_n) is asserted. Set the recommended deep BESL equal to the
controller's DCTL.HIRD_Thres[3:0] setting, and set the baseline BESL
to 0 for the shallow low-power signal. This maximizes the opportunity
for L1 residency and optimizes power savings.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
dwc->hird_threshold field should store "snps,hird_threshold" property
only and not a combination of multiple properties. Remove the value of
"snps,is-utmi-l1-suspend" property from the field dwc->hird_threshold.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
