Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Supriya Karanth 39287076e4 usb: musb: Reselect index reg in interrupt context ... musb INDEX register is getting modified/corrupted during temporary un-locking in a SMP system. Set this register with proper value after re-acquiring the lock Scenario: --------- CPU1 is handling a data transfer completion interrupt received for the CLASS1 EP CPU2 is handling a CLASS2 thread which is queuing data to musb for transfer Below is the error sequence: CPU1 | CPU2 -------------------------------------------------------------------- Data transfer completion inter- | rupt recieved. | | musb INDEX reg set to CLASS1 EP | | musb LOCK is acquired. | | | CLASS2 thread queues data. | | CLASS2 thread tries to acquire musb | LOCK but lock is already taken by | CLASS1, so CLASS2 thread is | spinning. | From Interrupt Context musb | giveback function is called | | The giveback function releases | CLASS2 thread now acquires LOCK LOCK | | ClASS1 Request's completion cal-| ClASS2 schedules the data transfer and lback is called | sets the MUSB INDEX to Class2 EP number | Interrupt handler for CLASS1 EP | tries to acquire LOCK and is | spinning | | Interrupt for Class1 EP acquires| Class2 completes the scheduling etc and the MUSB LOCK | releases the musb LOCK | Interrupt for Class1 EP schedul-| es the next data transfer | but musb INDEX register is still| set to CLASS2 EP | Since the MUSB INDEX register is set to a different endpoint, we read and modify the wrong registers. Hence data transfer will not happen properly. This results in unpredictable behavior So, the MUSB INDEX register is set to proper value again when interrupt re-acquires the lock Cc: stable@vger.kernel.org Signed-off-by: Supriya Karanth <supriya.karanth@stericsson.com> Signed-off-by: Praveena Nadahally <praveen.nadahally@stericsson.com> Reviewed-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Felipe Balbi <balbi@ti.com>		2012-02-24 12:23:02 +02:00
..
accessibility	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-01-18 15:51:48 -08:00
amba	Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm	2012-01-08 13:10:57 -08:00
ata	[libata] ata_piix: Add Toshiba Satellite Pro A120 to the quirks list	2012-01-17 20:50:53 -05:00
atm	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
auxdisplay
base	Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm	2012-01-16 15:02:30 -08:00
bcma	bcma: connect the bcma bus suspend/resume to the bcma driver suspend/resume	2012-01-17 09:54:08 -05:00
block	nvme: fix merge error due to change of 'make_request_fn' fn type	2012-01-18 15:41:27 -08:00
bluetooth	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
cdrom	block: add and use scsi_blk_cmd_ioctl	2012-01-14 15:07:24 -08:00
char	tpm: fix (ACPI S3) suspend regression	2012-01-18 15:50:17 -08:00
clk
clocksource	Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm	2012-01-06 18:15:25 -08:00
connector
cpufreq	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq	2012-01-11 18:53:33 -08:00
cpuidle
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2012-01-10 22:01:27 -08:00
dca
devfreq
dio
dma	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-01-17 18:40:24 -08:00
edac	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
eisa
firewire	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
firmware	Merge commit '0706802183' into stable/for-linus-fixes-3.3	2012-01-12 11:53:55 -05:00
gpio	gpio: tps65910: Use correct offset for gpio initialization	2012-01-18 13:48:43 -07:00
gpu	nouveau: Support Optimus models for vga_switcheroo	2012-01-13 09:09:15 +00:00
hid	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
hv	Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb	2012-01-09 12:09:47 -08:00
hwmon	hwmon: (adm1031) Fix coding style issues	2012-01-16 22:51:48 +01:00
hwspinlock
i2c	Merge branches 'for-33/i2c/eg20t' and 'for-33/i2c/omap' into for-linus/i2c-33	2012-01-17 23:30:41 +00:00
ide	block: add and use scsi_blk_cmd_ioctl	2012-01-14 15:07:24 -08:00
idle	Merge branches 'einj', 'intel_idle', 'misc', 'srat' and 'turbostat-ivb' into release	2012-01-18 01:15:54 -05:00
ieee802154
infiniband	Merge branch 'for-next-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2012-01-18 16:29:42 -08:00
input	Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1	2012-01-14 12:32:16 -08:00
iommu	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu	2012-01-10 11:08:21 -08:00
isdn	Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1	2012-01-14 12:32:16 -08:00
leds	Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1	2012-01-14 12:32:16 -08:00
lguest	lguest: Make sure interrupt is allocated ok by lguest_setup_irq	2012-01-12 15:44:47 +10:30
macintosh	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
mca
md	Merge branch 'for-3.3/core' of git://git.kernel.dk/linux-block	2012-01-15 12:24:45 -08:00
media	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-01-18 12:53:54 -08:00
memstick	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
message	SCSI updates for post 3.2 merge window	2012-01-10 10:36:08 -08:00
mfd	Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1	2012-01-14 12:32:16 -08:00
misc	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-01-17 18:40:24 -08:00
mmc	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-01-17 18:40:24 -08:00
mtd	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-01-17 18:40:24 -08:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-01-17 22:26:41 -08:00
nfc	Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core	2012-01-07 12:03:30 -08:00
nubus
of	2nd set of device tree changes for v3.3	2012-01-14 13:25:55 -08:00
oprofile	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-01-06 08:02:58 -08:00
parisc	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
parport	Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1	2012-01-14 12:32:16 -08:00
pci	Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security	2012-01-14 18:36:33 -08:00
pcmcia	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2012-01-14 13:05:21 -08:00
pinctrl
platform	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
pnp	PNP: work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB	2012-01-06 12:11:20 -08:00
power	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
pps
ps3
ptp
rapidio
regulator	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6	2012-01-13 20:43:32 -08:00
rtc	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6	2012-01-13 20:43:32 -08:00
s390	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
sbus
scsi	SCSI updates on 20120118	2012-01-18 12:35:17 -08:00
sfi
sh	SH/R-Mobile updates for 3.3 merge window.	2012-01-11 23:29:20 -08:00
sn
spi	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-01-17 18:40:24 -08:00
ssb
staging	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-01-15 12:49:56 -08:00
target
tc
telephony
thermal
tty	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-01-17 18:40:24 -08:00
uio	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
usb	usb: musb: Reselect index reg in interrupt context	2012-02-24 12:23:02 +02:00
uwb	Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb	2012-01-09 12:09:47 -08:00
vhost	vhost-net: add module alias (v2.1)	2012-01-13 10:12:23 -08:00
video	Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma	2012-01-17 18:40:24 -08:00
virt
virtio	virtio: balloon: Add freeze, restore handlers to support S4	2012-01-12 15:44:47 +10:30
vlynq
w1
watchdog	module_param: make bool parameters really bool (drivers & misc)	2012-01-13 09:32:20 +10:30
xen	xen: using EXPORT_SYMBOL requires including export.h	2012-01-18 15:37:49 -08:00
zorro
Kconfig
Makefile	mmc: sdhci-pci: add platform data	2012-01-11 23:58:47 -05:00