Thadeu Lima de Souza Cascardo 0791971ba8 usb: allow drivers to use allocated bandwidth until unbound ... When using the remove sysfs file, the device configuration is set to -1 (unconfigured). This eventually unbind drivers with the bandwidth_mutex held. Some drivers may call functions that hold said mutex, like usb_reset_device. This is the case for rtl8187, for example. This will lead to the same process holding the mutex twice, which deadlocks. Besides, according to Alan Stern: "The deadlock problem probably could be handled somehow, but there's a separate issue: Until the usb_disable_device call finishes unbinding the drivers, the drivers are free to continue using their allocated bandwidth. We musn't change the bandwidth allocations until after the unbinding is done. So this patch is indeed necessary." Unbinding the driver before holding the bandwidth_mutex solves the problem. If any operation after that fails, drivers are not bound again. But that would be a problem anyway that the user may solve resetting the device configuration to one that works, just like he would need to do in most other failure cases. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2010-09-03 17:33:40 -07:00
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accessibility	…
acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2010-08-15 17:37:07 -07:00
amba	…
ata	libata-sff: remove harmful BUG_ON from ata_bmdma_qc_issue	2010-08-25 19:24:16 -04:00
atm	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	2010-08-12 09:11:31 -07:00
auxdisplay	…
base	firmware_class: fix typo in error path	2010-08-23 18:12:46 -07:00
block	Merge branch 'for-upstream/pvhvm' of git://xenbits.xensource.com/people/ianc/linux-2.6	2010-08-23 18:29:18 -07:00
bluetooth	Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6	2010-08-06 12:25:06 -07:00
cdrom	block: push down BKL into .open and .release	2010-08-07 18:25:34 +02:00
char	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2010-08-28 13:55:31 -07:00
clocksource	…
connector	…
cpufreq	[CPUFREQ] fix brace coding style issue.	2010-08-03 13:47:05 -04:00
cpuidle	cpuidle: extend cpuidle and menu governor to handle dynamic states	2010-08-09 20:45:04 -07:00
crypto	[S390] zcrypt: fix Kconfig dependencies	2010-08-13 10:06:54 +02:00
dca	…
dio	…
dma	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	2010-08-12 09:11:31 -07:00
edac	amd64_edac: Do not report error overflow as a separate error	2010-08-26 12:46:03 +02:00
eisa	…
firewire	firewire: ohci: work around VIA and NEC PHY packet reception bug	2010-08-29 09:17:31 +02:00
firmware	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2010-08-14 12:34:34 -07:00
gpio	gpiolib: Implement set_debounce for WM831x GPIOs	2010-08-12 11:27:57 +02:00
gpu	Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6	2010-08-28 14:08:38 -07:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2010-08-18 15:29:38 -07:00
hwmon	hwmon: (k8temp) Differentiate between AM2 and ASB1	2010-08-25 15:42:12 +02:00
i2c	Merge branch 'for-linus/i2c-2636' of git://git.fluff.org/bjdooks/linux	2010-08-14 11:57:54 -07:00
ide	ide: use module_param_named rather than module_param_call	2010-08-11 23:04:39 +09:30
idle	Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6	2010-08-15 11:17:52 -07:00
ieee1394	ieee1394: Adjust confusing if indentation	2010-08-05 23:26:30 +02:00
ieee802154	…
infiniband	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	2010-08-12 09:11:31 -07:00
input	Input: pxa27x_keypad - remove input_free_device() in pxa27x_keypad_remove()	2010-08-25 07:51:40 -07:00
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2010-08-23 18:30:30 -07:00
leds	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	2010-08-12 09:11:31 -07:00
lguest	…
macintosh	via-pmu: Add compat_pmu_ioctl	2010-08-24 15:28:28 +10:00
mca	…
md	md raid-1/10 Fix bio_rw bit manipulations again	2010-08-18 16:16:05 +10:00
media	V4L/DVB: mantis: Fix IR_CORE dependency	2010-08-24 10:42:08 -07:00
memstick	memstick: fix hangs on unexpected device removal in mspro_blk	2010-08-12 08:43:31 -07:00
message	fusion: add function parameter names to kernel-doc	2010-08-14 16:21:00 -07:00
mfd	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6	2010-08-12 10:01:30 -07:00
misc	Merge branch 'params' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus	2010-08-12 10:01:59 -07:00
mmc	drivers/mmc/host/sdhci-s3c.c: use the correct mutex and card detect function	2010-08-20 09:34:55 -07:00
mtd	Merge git://git.infradead.org/mtd-2.6	2010-08-21 12:47:05 -07:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2010-08-28 15:42:44 -07:00
nubus	…
of	of/device: Replace struct of_device with struct platform_device	2010-08-06 09:25:50 -06:00
oprofile	…
parisc	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-08-04 15:31:02 -07:00
parport	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	2010-08-12 09:11:31 -07:00
pci	Merge git://git.infradead.org/iommu-2.6	2010-08-15 17:34:20 -07:00
pcmcia	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	2010-08-12 09:11:31 -07:00
platform	intel_scu_ipc: fix IPC i2c write bug	2010-08-24 10:42:09 -07:00
pnp	…
power	Merge git://git.infradead.org/battery-2.6	2010-08-12 09:58:33 -07:00
pps	…
ps3	…
rapidio	…
regulator	regulator: Remove default DEBUG define from TPS6586x	2010-08-11 11:38:03 +01:00
rtc	Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6	2010-08-12 09:11:31 -07:00
s390	Input: sysrq - drop tty argument form handle_sysrq()	2010-08-21 00:34:45 -07:00
sbus	of/device: Replace struct of_device with struct platform_device	2010-08-06 09:25:50 -06:00
scsi	drivers/scsi/qla4xxx: fix build	2010-08-20 09:34:56 -07:00
serial	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2010-08-28 13:55:31 -07:00
sfi	…
sh	sh: add a reparent function to DIV6 clocks	2010-08-04 16:12:01 +09:00
sn	…
spi	m68knommu: include sched.h in ColdFire/SPI driver	2010-08-18 12:44:31 +10:00
ssb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6	2010-08-06 12:25:06 -07:00
staging	Staging: sep: remove driver	2010-08-23 18:15:38 -07:00
tc	…
telephony	pcmcia: do not use io_req_t when calling pcmcia_request_io()	2010-08-03 09:04:11 +02:00
thermal	…
uio	uio: Remove IRQF_DISABLED flag from uio_cif.c	2010-08-05 13:53:33 -07:00
usb	usb: allow drivers to use allocated bandwidth until unbound	2010-09-03 17:33:40 -07:00
uwb	…
vhost	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2010-08-04 11:47:58 -07:00
video	matroxfb: fix incorrect use of memcpy_toio()	2010-08-20 09:34:54 -07:00
virtio	…
vlynq	…
w1	…
watchdog	watchdog: hpwdt (12/12): Make NMI decoding a compile-time option	2010-08-13 20:54:53 +00:00
xen	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2010-08-28 13:55:31 -07:00
zorro	zorro: Fix reading of proc/bus/zorro/* in small chunks	2010-08-09 21:14:08 +02:00
Kconfig	…
Makefile	…