XFS doesn't always hold i_mutex when calling truncate_setsize() and it
uses a different lock to serialize truncates and writes. So fix the
comment before truncate_setsize().
Reported-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Add new quirk for devices that cannot handle control-line state
requests.
Note that we currently send these requests to all devices, regardless of
whether they claim to support it, but that errors are only logged if
support is claimed.
Since commit 0943d8ead3 ("USB: cdc-acm: use tty-port dtr_rts"), which
only changed the timings for these requests slightly, this has been
reported to cause occasional firmware crashes on Simtec Electronics
Entropy Key devices after re-enumeration. Enable the quirk for this
device.
Reported-by: Nix <nix@esperi.org.uk>
Tested-by: Nix <nix@esperi.org.uk>
Cc: stable <stable@vger.kernel.org> # v3.16
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A single fix this for dwc2 this time. Because of
excessive debugging messages, dwc2 would sometimes
fail enumeration. The fix is simple, just converting
a dev_info() into dev_dbg().
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'fixes-for-v3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v3.18-rc4
A single fix this for dwc2 this time. Because of
excessive debugging messages, dwc2 would sometimes
fail enumeration. The fix is simple, just converting
a dev_info() into dev_dbg().
Signed-off-by: Felipe Balbi <balbi@ti.com>
Commit f95499c303 ("n_tty: Don't wait for buffer work in read() loop")
introduces a race window where a pty master can be signalled that the pty
slave was closed before all the data that the slave wrote is delivered.
Commit f8747d4a46 ("tty: Fix pty master read() after slave closes") fixed the
problem in case of n_tty_read, but the problem still exists for n_tty_poll.
This can be seen by running 'for ((i=0; i<100;i++));do ./test.py ;done'
where test.py is:
import os, select, pty
(pid, pty_fd) = pty.fork()
if pid == 0:
os.write(1, 'This string should be received by parent')
else:
poller = select.epoll()
poller.register( pty_fd, select.EPOLLIN )
ready = poller.poll( 1 * 1000 )
for fd, events in ready:
if not events & select.EPOLLIN:
print 'missed POLLIN event'
else:
print os.read(fd, 100)
poller.close()
The string from the slave is missed several times.
This patch takes the same approach as the fix for read and special cases
this condition for poll.
Tested on 3.16.
Signed-off-by: Francesco Ruggeri <fruggeri@arista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Two fixes of non-atomic allocations in write paths.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v3.18-rc4
Two fixes of non-atomic allocations in write paths.
Signed-off-by: Johan Hovold <johan@kernel.org>
Enumeration
- Don't oops on virtual buses in acpi_pci_get_bridge_handle() (Yinghai Lu)
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Merge tag 'pci-v3.18-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fix from Bjorn Helgaas:
"This fixes an oops when enabling SR-IOV VF devices. The oops is a
regression I added by configuring all devices during enumeration.
- Don't oops on virtual buses in acpi_pci_get_bridge_handle() (Yinghai Lu)"
* tag 'pci-v3.18-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Don't oops on virtual buses in acpi_pci_get_bridge_handle()
This update contains mostly only fixes for Realtek HD-audio codec
driver in addition to a long-standing sysfs warning bug fix for
USB-audio. One significant fix for Realtek codecs is the update of
EAPD init codes. This avoids invalid COEF setups for some codec
models and may fix "lost sound" in some cases. The rest are a bit
high volume but only new quirks and ALC668-specific COEF tables.
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Merge tag 'sound-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This update contains mostly only fixes for Realtek HD-audio codec
driver in addition to a long-standing sysfs warning bug fix for
USB-audio.
One significant fix for Realtek codecs is the update of EAPD init
codes. This avoids invalid COEF setups for some codec models and may
fix "lost sound" in some cases.
The rest are a bit high volume but only new quirks and ALC668-specific
COEF tables"
* tag 'sound-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek - Restore default value for ALC668
ALSA: usb-audio: Fix device_del() sysfs warnings at disconnect
ALSA: hda - fix mute led problem for three HP laptops
ALSA: hda/realtek - Update Initial AMP for EAPD control
ALSA: hda - change three SSID quirks to one pin quirk
ALSA: hda - Set GPIO 4 low for a few HP machines
ALSA: hda - Add ultra dock support for Thinkpad X240.
- Fix card detection regression.
The MMC_CAP2_CD_ACTIVE_HIGH and MMC_CAP2_RO_ACTIVE_HIGH could under
some circumstances be set incorrectly, causing the card detection to
fail.
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Merge tag 'mmc-v3.18-2' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC fix from Ulf Hansson:
"Fix card detection regression in the MMC core.
The MMC_CAP2_CD_ACTIVE_HIGH and MMC_CAP2_RO_ACTIVE_HIGH could under
some circumstances be set incorrectly, causing the card detection to
fail"
* tag 'mmc-v3.18-2' of git://git.linaro.org/people/ulf.hansson/mmc:
mmc: core: fix card detection regression
Pull another filesystem fix from Al Viro:
"A fix for embarrassing braino in o2net_send_tcp_msg(). -stable
fodder..."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fix breakage in o2net_send_tcp_msg()
Virtual page number of R3000 in entryhi is 20 bit from MSB. But in
dump_tlb(), the bit mask to read it from entryhi is 19 bit (0xffffe000).
The patch fixes that to 0xfffff000.
Signed-off-by: Isamu Mogi <isamu@leafytree.jp>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8290/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
If PM_RUNTIME is enabled, it is easy to trigger the following backtrace
on pxa2xx hosts:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at /home/lumag/linux/arch/arm/mach-pxa/clock.c:35 clk_disable+0xa0/0xa8()
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-00007-g1b3d2ee-dirty #104
[<c000de68>] (unwind_backtrace) from [<c000c078>] (show_stack+0x10/0x14)
[<c000c078>] (show_stack) from [<c001d75c>] (warn_slowpath_common+0x6c/0x8c)
[<c001d75c>] (warn_slowpath_common) from [<c001d818>] (warn_slowpath_null+0x1c/0x24)
[<c001d818>] (warn_slowpath_null) from [<c0015e80>] (clk_disable+0xa0/0xa8)
[<c0015e80>] (clk_disable) from [<c02507f8>] (pxa2xx_spi_suspend+0x2c/0x34)
[<c02507f8>] (pxa2xx_spi_suspend) from [<c0200360>] (platform_pm_suspend+0x2c/0x54)
[<c0200360>] (platform_pm_suspend) from [<c0207fec>] (dpm_run_callback.isra.14+0x2c/0x74)
[<c0207fec>] (dpm_run_callback.isra.14) from [<c0209254>] (__device_suspend+0x120/0x2f8)
[<c0209254>] (__device_suspend) from [<c0209a94>] (dpm_suspend+0x50/0x208)
[<c0209a94>] (dpm_suspend) from [<c00455ac>] (suspend_devices_and_enter+0x8c/0x3a0)
[<c00455ac>] (suspend_devices_and_enter) from [<c0045ad4>] (pm_suspend+0x214/0x2a8)
[<c0045ad4>] (pm_suspend) from [<c04b5c34>] (test_suspend+0x14c/0x1dc)
[<c04b5c34>] (test_suspend) from [<c000880c>] (do_one_initcall+0x8c/0x1fc)
[<c000880c>] (do_one_initcall) from [<c04aecfc>] (kernel_init_freeable+0xf4/0x1b4)
[<c04aecfc>] (kernel_init_freeable) from [<c0378078>] (kernel_init+0x8/0xec)
[<c0378078>] (kernel_init) from [<c0009590>] (ret_from_fork+0x14/0x24)
---[ end trace 46524156d8faa4f6 ]---
This happens because suspend function tries to disable a clock that is
already disabled by runtime_suspend callback. Add if
(!pm_runtime_suspended()) checks to suspend/resume path.
Fixes: 7d94a50585 (spi/pxa2xx: add support for runtime PM)
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Reported-by: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
The info pointer points to an uninitialized kmalloced space.
If a device doesn't have clk property, then info->clk may
have unpredicated value and cause call trace. So use kzalloc
to make sure it is NULL initialized.
Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
Acked-by: Arnd Bergmann <arnd@arndb.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We can call this function for a dummy console that doesn't support
setting the font mapping, which will result in a null ptr BUG. So check
for this case and return error for consoles w/o font mapping support.
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=59321
Signed-off-by: Imre Deak <imre.deak@intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The calculation of value quot for highspeed register set to three
was wrong. This patch fixes the calculation so that the serial port
for baudrates bigger then 576000 baud is working correctly.
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The horrible split between the low-level part of the edma support
and the dmaengine front-end driver causes problems on multiplatform
kernels. This is an attempt to improve the situation slightly
by only registering the dmaengine devices that are actually
present.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[olof: add missing include of linux/dma-mapping.h]
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Olof Johansson <olof@lixom.net>
Only print one warning when a task is on the read_wait or write_wait
wait queue at final tty release.
Cc: <stable@vger.kernel.org> # 3.4.x+
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kernel oops can cause the tty to be unreleaseable (for example, if
n_tty_read() crashes while on the read_wait queue). This will cause
tty_release() to endlessly loop without sleeping.
Use a killable sleep timeout which grows by 2n+1 jiffies over the interval
[0, 120 secs.) and then jumps to forever (but still killable).
NB: killable just allows for the task to be rewoken manually, not
to be terminated.
Cc: <stable@vger.kernel.org> # since before 2.6.32
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
uart_get_baud_rate() will return baud == 0 if the max rate is set
to the "magic" 38400 rate and the SPD_* flags are also specified.
On the first iteration, if the current baud rate is higher than the
max, the baud rate is clamped at the max (which in the degenerate
case is 38400). On the second iteration, the now-"magic" 38400 baud
rate selects the possibly higher alternate baud rate indicated by
the SPD_* flag. Since only two loop iterations are performed, the
loop is exited, a kernel WARNING is generated and a baud rate of
0 is returned.
Reproducible with:
setserial /dev/ttyS0 spd_hi base_baud 38400
Only perform the "magic" 38400 -> SPD_* baud transform on the first
loop iteration, which prevents the degenerate case from recognizing
the clamped baud rate as the "magic" 38400 value.
Reported-by: Robert Święcki <robert@swiecki.net>
Cc: <stable@vger.kernel.org> # all
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Restore the registers to prevent the abnormal digital power supply
rising ratio/sequence to the codec and causing the incorrect default
codec register restoration during initialization.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The USB OTG port does not work since v3.16 on omap platform.
This is a regression introduced by the commit
eb82a3d846 (phy: omap-usb2: Balance pm_runtime_enable() on probe failure
and remove).
This because the call to pm_runtime_enable() function is moved after the
call to devm_phy_create() function, which has side effect since later in
the subsequent calls of devm_phy_create() there is a check with
pm_runtime_enabled() to configure few things.
Fixes: eb82a3d846
Signed-off-by: Oussama Ghorbel <ghorbel@pivasoftware.com>
Tested-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
uninitialized msghdr. Broken in "ocfs2: don't open-code kernel_recvmsg()"
by me ;-/
Cc: stable@vger.kernel.org # 3.15+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Pull s390 update from Martin Schwidefsky:
"One small improvement for the cputime accounting, two bug fixes and an
update for the default configuration files"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/ftrace: add ftrace_graph_is_dead() check
s390: update default configuration
s390/vdso: fix stack corruption
s390/time: use stck clock fast for do_account_vtime
acpi_pci_get_bridge_handle() returns the ACPI handle for the bridge device
(either a host bridge or a PCI-to-PCI bridge) leading to a PCI bus. But
SR-IOV virtual functions can be on a virtual bus with no bridge leading to
it. Return a NULL acpi_handle in this case instead of trying to
dereference the NULL pointer to the bridge.
This fixes a NULL pointer dereference oops in pci_get_hp_params() when
adding SR-IOV VF devices on virtual buses.
[bhelgaas: changelog, add comment in code]
Fixes: 6cd33649fa ("PCI: Add pci_configure_device() during enumeration")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=87591
Reported-by: Chao Zhou <chao.zhou@intel.com>
Reported-by: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The timeout argument to usb_stor_control_msg() is specified in jiffies, not
milliseconds.
Signed-off-by: Mark Knibbs <markk@clara.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tsl4531 - fix a compile error when CONFIG_PM_OPS not set.
* kxcjk-1013 - event spec direction was invalid - leading to 'interesting'
attrribute names.
* as3935 - sizeof(st) used instead of sizeof(*st) leading to allocation of
space for a pointer rather than the structure desired.
* ade7758 - Another null pointer deref fix due to different channels
being provided to the the buffer register than used for the sysfs
side of things.
* ade7758 - Check there is a channel enabled in preenable for the buffer
before doing anything.
* ade7758 - Drop a stray raw from the channel name that leads to _raw_raw
postfix.
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Merge tag 'iio-fixes-for-3.18b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second round of IIO fixes for the 3.18 cycle.
* tsl4531 - fix a compile error when CONFIG_PM_OPS not set.
* kxcjk-1013 - event spec direction was invalid - leading to 'interesting'
attrribute names.
* as3935 - sizeof(st) used instead of sizeof(*st) leading to allocation of
space for a pointer rather than the structure desired.
* ade7758 - Another null pointer deref fix due to different channels
being provided to the the buffer register than used for the sysfs
side of things.
* ade7758 - Check there is a channel enabled in preenable for the buffer
before doing anything.
* ade7758 - Drop a stray raw from the channel name that leads to _raw_raw
postfix.
Make sure to only raise DTR on transitions from B0 in set_termios.
Also allow set_termios to be called from open with a termios_old of
NULL. Note that DTR will not be raised prematurely in this case.
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit bda9893c50 as it was
incorrect.
Reported-by: Mark Knibbs <markk@clara.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Driver has been there since a while back, but the dts never seems to
have been updated with the node (nor pinctrl). Do so now.
Cc: Matt Porter <mporter@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Olof Johansson <olof@lixom.net>
"raw" is a property of a channel, but should not be part of the name of
channel.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
We should check if a channel is enabled, not if no channels are enabled.
Fixes: 550268ca11 ("staging:iio: scrap scan_count and ensure all drivers use active_scan_mask")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
In older versions of the IIO framework it was possible to pass a completely
different set of channels to iio_buffer_register() as the one that is
assigned to the IIO device. Commit 959d2952d1 ("staging:iio: make
iio_sw_buffer_preenable much more general.") introduced a restriction that
requires that the set of channels that is passed to iio_buffer_register() is
a subset of the channels assigned to the IIO device as the IIO core will use
the list of channels that is assigned to the device to lookup a channel by
scan index in iio_compute_scan_bytes(). If it can not find the channel the
function will crash. This patch fixes the issue by making sure that the same
set of channels is assigned to the IIO device and passed to
iio_buffer_register().
Note that we need to remove the IIO_CHAN_INFO_RAW and IIO_CHAN_INFO_SCALE
info attributes from the channels since we don't actually want those to be
registered.
Fixes the following crash:
Unable to handle kernel NULL pointer dereference at virtual address 00000016
pgd = d2094000
[00000016] *pgd=16e39831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 1 PID: 1695 Comm: bash Not tainted 3.17.0-06329-g29461ee #9686
task: d7768040 ti: d5bd4000 task.ti: d5bd4000
PC is at iio_compute_scan_bytes+0x38/0xc0
LR is at iio_compute_scan_bytes+0x34/0xc0
pc : [<c0316de8>] lr : [<c0316de4>] psr: 60070013
sp : d5bd5ec0 ip : 00000000 fp : 00000000
r10: d769f934 r9 : 00000000 r8 : 00000001
r7 : 00000000 r6 : c8fc6240 r5 : d769f800 r4 : 00000000
r3 : d769f800 r2 : 00000000 r1 : ffffffff r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 18c5387d Table: 1209404a DAC: 00000015
Process bash (pid: 1695, stack limit = 0xd5bd4240)
Stack: (0xd5bd5ec0 to 0xd5bd6000)
5ec0: d769f800 d7435640 c8fc6240 d769f984 00000000 c03175a4 d7435690 d7435640
5ee0: d769f990 00000002 00000000 d769f800 d5bd4000 00000000 000b43a8 c03177f4
5f00: d769f810 0162b8c8 00000002 c8fc7e00 d77f1d08 d77f1da8 c8fc7e00 c01faf1c
5f20: 00000002 c010694c c010690c d5bd5f88 00000002 c8fc6840 c8fc684c c0105e08
5f40: 00000000 00000000 d20d1580 00000002 000af408 d5bd5f88 c000de84 c00b76d4
5f60: d20d1580 000af408 00000002 d20d1580 d20d1580 00000002 000af408 c000de84
5f80: 00000000 c00b7a44 00000000 00000000 00000002 b6ebea78 00000002 000af408
5fa0: 00000004 c000dd00 b6ebea78 00000002 00000001 000af408 00000002 00000000
5fc0: b6ebea78 00000002 000af408 00000004 bee96a4c 000a6094 00000000 000b43a8
5fe0: 00000000 bee969cc b6e2eb77 b6e6525c 40070010 00000001 00000000 00000000
[<c0316de8>] (iio_compute_scan_bytes) from [<c03175a4>] (__iio_update_buffers+0x248/0x438)
[<c03175a4>] (__iio_update_buffers) from [<c03177f4>] (iio_buffer_store_enable+0x60/0x7c)
[<c03177f4>] (iio_buffer_store_enable) from [<c01faf1c>] (dev_attr_store+0x18/0x24)
[<c01faf1c>] (dev_attr_store) from [<c010694c>] (sysfs_kf_write+0x40/0x4c)
[<c010694c>] (sysfs_kf_write) from [<c0105e08>] (kernfs_fop_write+0x110/0x154)
[<c0105e08>] (kernfs_fop_write) from [<c00b76d4>] (vfs_write+0xbc/0x170)
[<c00b76d4>] (vfs_write) from [<c00b7a44>] (SyS_write+0x40/0x78)
[<c00b7a44>] (SyS_write) from [<c000dd00>] (ret_fast_syscall+0x0/0x30)
Fixes: 959d2952d1 ("staging:iio: make iio_sw_buffer_preenable much more general.")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Because IIO_EV_DIR_* are not bitmasks but enums,
IIO_EV_DIR_RISING | IIO_EV_DIR_FALLING is not equal
with IIO_EV_DIR_EITHER.
This could lead to potential misformatted sysfs attributes
like:
* in_accel_x_thresh_(null)_en
* in_accel_x_thresh_(null)_period
* in_accel_x_thresh_(null)_value
or even memory corruption.
Fixes: b4b491c083 (iio: accel: kxcjk-1013: Support threshold)
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Fix the compiler error when the CONFIG_PM_OPS flag is not set.
drivers/iio/light/tsl4531.c:235:8: error: ‘tsl4531_suspend’ undeclared here (not in a function)
drivers/iio/light/tsl4531.c:235:8: error: ‘tsl4531_resume’ undeclared here (not in a function)
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
We should disable lradc->clk in the case of errors in the probe function.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: <Stable@vger.kernel.org>
Use byte_for_channel as iterator to properly initialize the buffer.
Signed-off-by: Robin van der Gracht <robin@protonic.nl>
Acked-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: <Stable@vger.kernel.org>
"raw" is the name of a channel property, but should not be part of the
channel name itself.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
In older versions of the IIO framework it was possible to pass a
completely different set of channels to iio_buffer_register() as the one
that is assigned to the IIO device. Commit 959d2952d1 ("staging:iio: make
iio_sw_buffer_preenable much more general.") introduced a restriction that
requires that the set of channels that is passed to iio_buffer_register() is
a subset of the channels assigned to the IIO device as the IIO core will use
the list of channels that is assigned to the device to lookup a channel by
scan index in iio_compute_scan_bytes(). If it can not find the channel the
function will crash. This patch fixes the issue by making sure that the same
set of channels is assigned to the IIO device and passed to
iio_buffer_register().
Fixes the follow NULL pointer derefernce kernel crash:
Unable to handle kernel NULL pointer dereference at virtual address 00000016
pgd = d53d0000
[00000016] *pgd=1534e831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 1 PID: 1626 Comm: bash Not tainted 3.15.0-19969-g2a180eb-dirty #9545
task: d6c124c0 ti: d539a000 task.ti: d539a000
PC is at iio_compute_scan_bytes+0x34/0xa8
LR is at iio_compute_scan_bytes+0x34/0xa8
pc : [<c03052e4>] lr : [<c03052e4>] psr: 60070013
sp : d539beb8 ip : 00000001 fp : 00000000
r10: 00000002 r9 : 00000000 r8 : 00000001
r7 : 00000000 r6 : d6dc8800 r5 : d7571000 r4 : 00000002
r3 : d7571000 r2 : 00000044 r1 : 00000001 r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 18c5387d Table: 153d004a DAC: 00000015
Process bash (pid: 1626, stack limit = 0xd539a240)
Stack: (0xd539beb8 to 0xd539c000)
bea0: c02fc0e4 d7571000
bec0: d76c1640 d6dc8800 d757117c 00000000 d757112c c0305b04 d76c1690 d76c1640
bee0: d7571188 00000002 00000000 d7571000 d539a000 00000000 000dd1c8 c0305d54
bf00: d7571010 0160b868 00000002 c69d3900 d7573278 d7573308 c69d3900 c01ece90
bf20: 00000002 c0103fac c0103f6c d539bf88 00000002 c69d3b00 c69d3b0c c0103468
bf40: 00000000 00000000 d7694a00 00000002 000af408 d539bf88 c000dd84 c00b2f94
bf60: d7694a00 000af408 00000002 d7694a00 d7694a00 00000002 000af408 c000dd84
bf80: 00000000 c00b32d0 00000000 00000000 00000002 b6f1aa78 00000002 000af408
bfa0: 00000004 c000dc00 b6f1aa78 00000002 00000001 000af408 00000002 00000000
bfc0: b6f1aa78 00000002 000af408 00000004 be806a4c 000a6094 00000000 000dd1c8
bfe0: 00000000 be8069cc b6e8ab77 b6ec125c 40070010 00000001 22940489 154a5007
[<c03052e4>] (iio_compute_scan_bytes) from [<c0305b04>] (__iio_update_buffers+0x248/0x438)
[<c0305b04>] (__iio_update_buffers) from [<c0305d54>] (iio_buffer_store_enable+0x60/0x7c)
[<c0305d54>] (iio_buffer_store_enable) from [<c01ece90>] (dev_attr_store+0x18/0x24)
[<c01ece90>] (dev_attr_store) from [<c0103fac>] (sysfs_kf_write+0x40/0x4c)
[<c0103fac>] (sysfs_kf_write) from [<c0103468>] (kernfs_fop_write+0x110/0x154)
[<c0103468>] (kernfs_fop_write) from [<c00b2f94>] (vfs_write+0xd0/0x160)
[<c00b2f94>] (vfs_write) from [<c00b32d0>] (SyS_write+0x40/0x78)
[<c00b32d0>] (SyS_write) from [<c000dc00>] (ret_fast_syscall+0x0/0x30)
Code: ea00000e e1a01008 e1a00005 ebfff6fc (e5d0a016)
Fixes: 959d2952d1 ("staging:iio: make iio_sw_buffer_preenable much more general.")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch enables a few things missing from our defconfig:
- PCI and MSI, including support for the x-gene host controller
- BPF JIT
- SPI, GPIO and MMC for Seattle
- GPIO for x-gene
- USB for Juno
- RTC
It also removes HMC_DRV, which was being built as a module for some
reason.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Following the arm32 commit 2d605a3029 (ARM: enable bpf syscall), wire
this syscall for arm64 compat as well.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Some USB-audio devices show weird sysfs warnings at disconnecting the
devices, e.g.
usb 1-3: USB disconnect, device number 3
------------[ cut here ]------------
WARNING: CPU: 0 PID: 973 at fs/sysfs/group.c:216 device_del+0x39/0x180()
sysfs group ffffffff8183df40 not found for kobject 'midiC1D0'
Call Trace:
[<ffffffff814a3e38>] ? dump_stack+0x49/0x71
[<ffffffff8103cb72>] ? warn_slowpath_common+0x82/0xb0
[<ffffffff8103cc55>] ? warn_slowpath_fmt+0x45/0x50
[<ffffffff813521e9>] ? device_del+0x39/0x180
[<ffffffff81352339>] ? device_unregister+0x9/0x20
[<ffffffff81352384>] ? device_destroy+0x34/0x40
[<ffffffffa00ba29f>] ? snd_unregister_device+0x7f/0xd0 [snd]
[<ffffffffa025124e>] ? snd_rawmidi_dev_disconnect+0xce/0x100 [snd_rawmidi]
[<ffffffffa00c0192>] ? snd_device_disconnect+0x62/0x90 [snd]
[<ffffffffa00c025c>] ? snd_device_disconnect_all+0x3c/0x60 [snd]
[<ffffffffa00bb574>] ? snd_card_disconnect+0x124/0x1a0 [snd]
[<ffffffffa02e54e8>] ? usb_audio_disconnect+0x88/0x1c0 [snd_usb_audio]
[<ffffffffa015260e>] ? usb_unbind_interface+0x5e/0x1b0 [usbcore]
[<ffffffff813553e9>] ? __device_release_driver+0x79/0xf0
[<ffffffff81355485>] ? device_release_driver+0x25/0x40
[<ffffffff81354e11>] ? bus_remove_device+0xf1/0x130
[<ffffffff813522b9>] ? device_del+0x109/0x180
[<ffffffffa01501d5>] ? usb_disable_device+0x95/0x1f0 [usbcore]
[<ffffffffa014634f>] ? usb_disconnect+0x8f/0x190 [usbcore]
[<ffffffffa0149179>] ? hub_thread+0x539/0x13a0 [usbcore]
[<ffffffff810669f5>] ? sched_clock_local+0x15/0x80
[<ffffffff81066c98>] ? sched_clock_cpu+0xb8/0xd0
[<ffffffff81070730>] ? bit_waitqueue+0xb0/0xb0
[<ffffffffa0148c40>] ? usb_port_resume+0x430/0x430 [usbcore]
[<ffffffffa0148c40>] ? usb_port_resume+0x430/0x430 [usbcore]
[<ffffffff8105973e>] ? kthread+0xce/0xf0
[<ffffffff81059670>] ? kthread_create_on_node+0x1c0/0x1c0
[<ffffffff814a8b7c>] ? ret_from_fork+0x7c/0xb0
[<ffffffff81059670>] ? kthread_create_on_node+0x1c0/0x1c0
---[ end trace 40b1928d1136b91e ]---
This comes from the fact that usb-audio driver may receive the
disconnect callback multiple times, per each usb interface. When a
device has both audio and midi interfaces, it gets called twice, and
currently the driver tries to release resources at the last call.
At this point, the first parent interface has been already deleted,
thus deleting a child of the first parent hits such a warning.
For fixing this problem, we need to call snd_card_disconnect() and
cancel pending operations at the very first disconnect while the
release of the whole objects waits until the last disconnect call.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80931
Reported-and-tested-by: Tomas Gayoso <tgayoso@gmail.com>
Reported-and-tested-by: Chris J Arges <chris.j.arges@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
ovl_cache_put() can be called from ovl_dir_reset() if the cache needs to be
rebuilt. We did list_del() on the cursor, which results in an Oops on the
poisoned pointer in ovl_seek_cursor().
Reported-by: Jordi Pujol Palomer <jordipujolp@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Tested-by: Jordi Pujol Palomer <jordipujolp@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Since commit 89168b4899 ("mmc: core: restore detect line inversion
semantics"), the SD card on i.MX28 (and possibly other) devices isn't
detected and booting stops at:
[ 4.120617] Waiting for root device /dev/mmcblk0p3...
This is caused by the MMC_CAP2_CD_ACTIVE_HIGH flag being set incorrectly
when the host controller doesn't use a GPIO for card detection (but
instead uses a dedicated pin). In this case mmc_gpiod_request_cd() will
return before assigning to the gpio_invert variable, leaving the
variable uninitialized. The variable then gets used to set the flag.
This patch fixes the issue by making sure gpio_invert is set to false
when a GPIO isn't used. After this patch, i.MX28 boots fine.
The MMC_CAP2_RO_ACTIVE_HIGH (write protect) flag is also set incorrectly
for the exact same reason (it uses the same uninitialized variable), so
this patch fixes that too.
Fixes: 89168b4899 ("mmc: core: restore detect line inversion semantics")
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Without the fix, the mute led can't work on these three machines.
After apply this fix, these three machines will fall back on the led
control quirk as below, and through testing, the mute led works very
well.
PIN_QUIRK(0x10ec0282, 0x103c, "HP", ALC269_FIXUP_HP_LINE1_MIC1_LED,
ALC282_STANDARD_PINS,
{0x12, 0x90a60140},
...
BugLink: https://bugs.launchpad.net/bugs/1389497
Tested-by: TieFu Chen <tienfu.chen@canonical.com>
Cc: Kailang Yang <kailang@realtek.com>
Cc: stable@vger.kernel.org
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Add Lee Jones as a new co-maintainer.
The kernel.org repo moved to allow us both to push to it. Update
MAINTAINERS to match.
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
- Fix a regression on Vybrid platform which is caused by commit
dc4805c2e7 (ARM: imx: remove ENABLE and BYPASS bits from clk-pllv3
driver), and results in a missing configuration on PLL clocks.
- Fix a regression with i.MX defconfig files where CONFIG_SPI option
gets lost accidentally.
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Merge tag 'imx-fixes-3.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
Merge "ARM: imx: fixes for 3.18, 2nd round" from Shawn Guo:
"This is the second round of i.MX fixes for 3.18. The clk-vf610 fix is
relatively big, because it needs some adaption to the change made by
offending commit dc4805c2e7 (ARM: imx: remove ENABLE and BYPASS bits
from clk-pllv3 driver). And it should have been sent to you for earlier
-rc inclusion, but unfortunately it got delayed for some time because
Stefan wasn't aware of my email address change."
The i.MX fixes for 3.18, 2nd round:
- Fix a regression on Vybrid platform which is caused by commit
dc4805c2e7 (ARM: imx: remove ENABLE and BYPASS bits from clk-pllv3
driver), and results in a missing configuration on PLL clocks.
- Fix a regression with i.MX defconfig files where CONFIG_SPI option
gets lost accidentally.
* tag 'imx-fixes-3.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (460 commits)
ARM: imx: Fix the removal of CONFIG_SPI option
ARM: imx: clk-vf610: define PLL's clock tree
+ Linux 3.18-rc3
Signed-off-by: Olof Johansson <olof@lixom.net>
