Alan Stern 356c05d58a sysfs: get rid of some lockdep false positives ... This patch (as1554) fixes a lockdep false-positive report. The problem arises because lockdep is unable to deal with the tree-structured locks created by the device core and sysfs. This particular problem involves a sysfs attribute method that unregisters itself, not from the device it was called for, but from a descendant device. Lockdep doesn't understand the distinction and reports a possible deadlock, even though the operation is safe. This is the sort of thing that would normally be handled by using a nested lock annotation; unfortunately it's not feasible to do that here. There's no sensible way to tell sysfs when attribute removal occurs in the context of a parent attribute method. As a workaround, the patch adds a new flag to struct attribute telling sysfs not to inform lockdep when it acquires a readlock on a sysfs_dirent instance for the attribute. The readlock is still acquired, but lockdep doesn't know about it and hence does not complain about impossible deadlock scenarios. Also added are macros for static initialization of attribute structures with the ignore_lockdep flag set. The three offending attributes in the USB subsystem are converted to use the new macros. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Tejun Heo <tj@kernel.org> CC: Eric W. Biederman <ebiederm@xmission.com> CC: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-05-14 12:19:56 -07:00
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accessibility	…
acpi	acpi: use KERN_CONT in printk() continuation lines	2012-05-08 08:55:26 -07:00
amba	ARM: 7366/3: amba: Remove AMBA level regulator support	2012-04-13 14:04:08 +01:00
ata	libata: forbid port runtime pm by default, fixing regression	2012-04-18 14:33:25 -04:00
atm	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
auxdisplay	…
base	Driver Core: don't oops with unregistered driver in driver_find_device()	2012-05-14 08:46:01 -07:00
bcma	bcma: use fallback sprom if no on chip sprom is available	2012-04-16 13:32:01 -04:00
block	Fixes in various components:	2012-04-20 11:31:00 -07:00
bluetooth	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth	2012-04-09 15:47:49 -04:00
cdrom	…
char	printk - fix compilation for CONFIG_PRINTK=n	2012-05-09 15:51:09 -07:00
clk	…
clocksource	Revert "clocksource: Load the ACPI PM clocksource asynchronously"	2012-04-12 00:05:05 +02:00
connector	…
cpufreq	cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS	2012-04-13 17:57:40 -07:00
cpuidle	Merge branches 'idle-fix' and 'misc' into release	2012-04-06 21:48:59 -04:00
crypto	crypto: talitos - properly lock access to global talitos registers	2012-04-09 15:13:40 +08:00
dca	…
devfreq	ARM: global cleanups	2012-03-27 16:03:32 -07:00
dio	…
dma	Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma	2012-04-26 15:33:36 -07:00
edac	Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile	2012-04-06 17:56:20 -07:00
eisa	…
extcon	Extcon: add MAX8997 extcon driver	2012-05-09 15:14:19 -07:00
firewire	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
firmware	…
gpio	gpiolib: Convert to devres_release()	2012-05-04 16:33:17 -07:00
gpu	drm/i915: Set the Stencil Cache eviction policy to non-LRA mode.	2012-04-28 08:05:15 +01:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2012-04-20 10:39:33 -07:00
hsi	HSI: hsi_char: Remove max_data_size from sysfs	2012-04-23 14:23:32 +03:00
hv	Drivers: hv: util: Properly handle version negotiations.	2012-05-14 08:59:31 -07:00
hwmon	hwmon: (fam15h_power) Fix pci_device_id array	2012-04-26 08:40:08 -07:00
hwspinlock	…
i2c	i2c: prevent spurious interrupt on Designware controllers	2012-04-10 08:09:03 -07:00
ide	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
idle	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
ieee802154	…
infiniband	A few fixes for regressions introduced in 3.4-rc1:	2012-04-26 15:35:35 -07:00
input	mfd: Convert twl6040 to i2c driver, and separate it from twl core	2012-04-16 16:45:34 +02:00
iommu	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-05 15:30:34 -07:00
isdn	tty and serial fixes for 3.4-rc2	2012-04-12 15:36:33 -07:00
leds	leds-atmel-pwm.c: Make pwmled_probe() __devinit	2012-04-17 16:29:31 +02:00
lguest	…
macintosh	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
mca	…
md	md: fix possible corruption of array metadata on shutdown.	2012-04-24 10:23:16 +10:00
media	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-04-21 12:43:23 -07:00
memory	memory: tegra{20,30}-mc: Use dev_err_ratelimited()	2012-05-14 08:47:11 -07:00
memstick	memstick: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:19 +08:00
message	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
mfd	mfd: Fix modular builds of rc5t583 regulator support	2012-04-16 21:27:07 +02:00
misc	misc: MAX8997: Remove max8997-muic driver	2012-05-09 15:15:59 -07:00
mmc	Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma	2012-04-26 15:33:36 -07:00
mtd	Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma	2012-04-26 15:33:36 -07:00
net	drivers/net: Do not free an IRQ if its request failed	2012-04-21 16:41:11 -04:00
nfc	…
nubus	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
of	gpio: Fix range check in of_gpio_simple_xlate()	2012-04-10 14:20:56 -06:00
oprofile	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
parisc	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
parport	parport: use KERN_CONT in printk() continuation lines	2012-05-08 08:55:26 -07:00
pci	Merge branch 'for-v3.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2012-04-27 19:32:37 -07:00
pcmcia	Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia	2012-03-29 16:00:48 -07:00
pinctrl	pinctrl: implement pinctrl_check_ops	2012-04-11 09:31:02 +02:00
platform	Merge branch 'akpm' (Andrew's patch-bomb)	2012-04-26 15:24:45 -07:00
pnp	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-03-30 16:45:39 -07:00
power	Various small bugfixes and enhancements, plus two new drivers:	2012-03-30 16:09:02 -07:00
pps	…
ps3	…
ptp	…
rapidio	…
regulator	regulator: Fix a build warning in the anatop driver for 3.4	2012-04-10 10:26:41 -07:00
remoteproc	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
rpmsg	…
rtc	drivers/rtc/rtc-ds1307.c: fix BUG shown with lock debugging enabled	2012-04-25 21:26:34 -07:00
s390	[S390] s390/char/vmur.c: fix memory leak	2012-04-11 14:28:24 +02:00
sbus	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
scsi	SCSI: Fix error handling when no ULD is attached	2012-04-15 11:08:53 -07:00
sfi	…
sh	SuperH updates for 3.4 merge window	2012-03-30 00:09:17 -07:00
sn	…
spi	spi/spi-bfin5xx: Fix flush of last bit after each spi transfer	2012-04-27 12:20:39 -06:00
ssb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2012-03-20 21:04:47 -07:00
staging	Merge 3.4-rc5 into driver-core-next	2012-05-02 14:33:37 -07:00
target	tcm_fc: Do not free tpg structure during wq allocation failure	2012-04-06 18:57:05 -07:00
tc	…
thermal	thermal: Fix for setting the thermal zone mode to enable/disable	2012-03-22 01:10:18 -04:00
tty	drivers/tty/amiserial.c: add missing tty_unlock	2012-04-19 19:15:35 -07:00
uio	…
usb	sysfs: get rid of some lockdep false positives	2012-05-14 12:19:56 -07:00
uwb	uwb: fix error handling	2012-04-18 13:15:51 -07:00
vhost	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-04-22 21:02:57 -07:00
video	blackfin: fix compile error in bfin-lq035q1-fb.c	2012-04-26 14:46:51 -04:00
virt	…
virtio	virtio_balloon: fix handling of PAGE_SIZE != 4k	2012-04-15 11:51:06 +03:00
vlynq	…
w1	w1: w1_ds2408.c: quite sparse noise about using plaing integer as NULL pointer	2012-05-04 16:25:30 -07:00
watchdog	hpwdt: Only BYTE reads/writes to WD Timer port 0x72	2012-04-26 14:38:07 +02:00
xen	xen/acpi: Workaround broken BIOSes exporting non-existing C-states.	2012-04-26 22:07:28 -04:00
zorro	…
Kconfig	memory: emif: add basic infrastructure for EMIF driver	2012-05-02 00:10:49 -07:00
Makefile	memory: emif: add basic infrastructure for EMIF driver	2012-05-02 00:10:49 -07:00