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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-24 21:24:00 +08:00
linux-next/drivers/usb
Shuah Khan 918b8ac55b usbip: fix warning in vhci_hcd_probe/lockdep_init_map
vhci_hcd calls sysfs_create_group() with dynamically allocated sysfs
attributes triggering the lock-class key not persistent warning. Call
sysfs_attr_init() for dynamically allocated sysfs attributes to fix it.

vhci_hcd vhci_hcd: USB/IP Virtual Host Controller
vhci_hcd vhci_hcd: new USB bus registered, assigned bus number 2
BUG: key ffff88006a7e8d18 not in .data!
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:3131
lockdep_init_map+0x60c/0x770
DEBUG_LOCKS_WARN_ON(1)[    1.567044] Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.0-rc7+ #58
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
 ffff88006bce6eb8 ffffffff81f96c8a ffffffff00000a02 1ffff1000d79cd6a
 ffffed000d79cd62 000000046bce6ed8 0000000041b58ab3 ffffffff8598af40
 ffffffff81f969f8 0000000000000000 0000000041b58ab3 0000000000000200
Call Trace:
 [<     inline     >] __dump_stack lib/dump_stack.c:15
 [<ffffffff81f96c8a>] dump_stack+0x292/0x398 lib/dump_stack.c:51
 [<ffffffff812b808f>] __warn+0x19f/0x1e0 kernel/panic.c:550
 [<ffffffff812b8195>] warn_slowpath_fmt+0xc5/0x110 kernel/panic.c:565
 [<ffffffff813f3efc>] lockdep_init_map+0x60c/0x770 kernel/locking/lockdep.c:3131
 [<ffffffff819e43d4>] __kernfs_create_file+0x114/0x2a0 fs/kernfs/file.c:954
 [<ffffffff819e68f5>] sysfs_add_file_mode_ns+0x225/0x520 fs/sysfs/file.c:305
 [<     inline     >] create_files fs/sysfs/group.c:64
 [<ffffffff819e8a89>] internal_create_group+0x239/0x8f0 fs/sysfs/group.c:134
 [<ffffffff819e915f>] sysfs_create_group+0x1f/0x30 fs/sysfs/group.c:156
 [<ffffffff8323de24>] vhci_start+0x5b4/0x7a0 drivers/usb/usbip/vhci_hcd.c:978
 [<ffffffff82c907ca>] usb_add_hcd+0x8da/0x1c60 drivers/usb/core/hcd.c:2867
 [<ffffffff8323bc57>] vhci_hcd_probe+0x97/0x130
drivers/usb/usbip/vhci_hcd.c:1103
 ---
 ---
---[ end trace c33c7b202cf3aac8 ]---

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-12-06 08:37:41 +01:00
..
atm usb: atm: usbatm: don't print on ENOMEM 2016-08-30 19:17:36 +02:00
c67x00
chipidea - Adding ULPI PHY support for imx53 2016-11-28 08:47:56 +01:00
class USB: cdc-acm: add device id for GW Instek AFG-125 2016-12-05 16:32:51 +01:00
common usb: patches for v4.9 merge window 2016-09-14 20:37:50 +02:00
core usb: core: usbport: Use proper LED API to fix potential crash 2016-12-06 08:37:41 +01:00
dwc2 usb: dwc2: Move functions from header to source 2016-11-18 13:54:54 +02:00
dwc3 usb: patches for v4.10 merge window 2016-11-18 16:02:15 +01:00
early treewide: remove redundant #include <linux/kconfig.h> 2016-10-11 15:06:33 -07:00
gadget Merge 4.9-rc7 into usb-next 2016-11-28 08:34:10 +01:00
host USB: OHCI: ohci-pxa27x: remove useless functions 2016-12-05 16:32:51 +01:00
image usb: microtek: Use "foo *bar" instead of "foo * bar". 2016-06-07 22:18:39 -07:00
isp1760 usb: Convert pr_warning to pr_warn 2016-11-03 10:38:36 +02:00
misc usb: patches for v4.10 merge window 2016-11-18 16:02:15 +01:00
mon usb: core: rename mutex usb_bus_list_lock to usb_bus_idr_lock 2016-02-06 21:55:57 -08:00
mtu3 usb: mtu3: declare functions static 2016-11-14 10:25:29 +01:00
musb Merge 4.9-rc7 into usb-next 2016-11-28 08:34:10 +01:00
phy usb: twl6030-usb: make driver DT only 2016-11-18 13:54:44 +02:00
renesas_usbhs usb: renesas_usbhs: cleanup with list_first_entry_or_null() 2016-11-03 10:38:37 +02:00
serial USB-serial updates for v4.10-rc1 2016-12-01 16:12:12 +01:00
storage Merge 4.9-rc7 into usb-next 2016-11-28 08:34:10 +01:00
usbip usbip: fix warning in vhci_hcd_probe/lockdep_init_map 2016-12-06 08:37:41 +01:00
wusbcore usb: fix improper return value when kzalloc fails 2016-11-29 17:36:43 +01:00
Kconfig usb: Add MediaTek USB3 DRD driver 2016-10-27 17:02:41 +02:00
Makefile usb: Add MediaTek USB3 DRD driver 2016-10-27 17:02:41 +02:00
README
usb-skeleton.c usb: usb-skeleton: don't print on ENOMEM 2016-08-30 19:17:39 +02:00

To understand all the Linux-USB framework, you'll use these resources:

    * This source code.  This is necessarily an evolving work, and
      includes kerneldoc that should help you get a current overview.
      ("make pdfdocs", and then look at "usb.pdf" for host side and
      "gadget.pdf" for peripheral side.)  Also, Documentation/usb has
      more information.

    * The USB 2.0 specification (from www.usb.org), with supplements
      such as those for USB OTG and the various device classes.
      The USB specification has a good overview chapter, and USB
      peripherals conform to the widely known "Chapter 9".

    * Chip specifications for USB controllers.  Examples include
      host controllers (on PCs, servers, and more); peripheral
      controllers (in devices with Linux firmware, like printers or
      cell phones); and hard-wired peripherals like Ethernet adapters.

    * Specifications for other protocols implemented by USB peripheral
      functions.  Some are vendor-specific; others are vendor-neutral
      but just standardized outside of the www.usb.org team.

Here is a list of what each subdirectory here is, and what is contained in
them.

core/		- This is for the core USB host code, including the
		  usbfs files and the hub class driver ("hub_wq").

host/		- This is for USB host controller drivers.  This
		  includes UHCI, OHCI, EHCI, and others that might
		  be used with more specialized "embedded" systems.

gadget/		- This is for USB peripheral controller drivers and
		  the various gadget drivers which talk to them.


Individual USB driver directories.  A new driver should be added to the
first subdirectory in the list below that it fits into.

image/		- This is for still image drivers, like scanners or
		  digital cameras.
../input/	- This is for any driver that uses the input subsystem,
		  like keyboard, mice, touchscreens, tablets, etc.
../media/	- This is for multimedia drivers, like video cameras,
		  radios, and any other drivers that talk to the v4l
		  subsystem.
../net/		- This is for network drivers.
serial/		- This is for USB to serial drivers.
storage/	- This is for USB mass-storage drivers.
class/		- This is for all USB device drivers that do not fit
		  into any of the above categories, and work for a range
		  of USB Class specified devices. 
misc/		- This is for all USB device drivers that do not fit
		  into any of the above categories.