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3a44494e23
linux/drivers
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Alan Stern 3a44494e23 USB: EHCI: rescan the queue after an unlink 
This patch (as1280) fixes an obscure bug in ehci-hcd's dequeuing logic
for async URBs.  If a later URB is unlinked and the completion
routine unlinks an earlier URB, then the earlier URB won't be given
back in a timely manner because the endpoint queue isn't rescanned as
it should be.

Similar bugs occur if an endpoint is reset or a halt is cleared while
a completion routine is running, because the subroutines don't test
for the COMPLETING state.

All these problems are solved by adding a new needs_rescan flag to the
ehci_qh structure.  If the flag is set while scanning through an idle
QH, the scan will be repeated.  If the QH isn't idle then an unlink
cycle will be initiated, and the proper action will be taken when it
becomes idle.

Also, an unnecessary test is removed from qh_link_async(): That
routine is never called if the QH's state isn't IDLE.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-23 06:46:37 -07:00
..
accessibility
acpi x86: Trivial whitespace cleanups 2009-09-20 20:18:57 +02:00
amba Merge branches 'arm', 'at91', 'bcmring', 'ep93xx', 'mach-types', 'misc' and 'w90x900' into devel 2009-09-12 12:01:34 +01:00
ata trivial: fix comment typo in drivers/ata/pata_hpt37x.c 2009-09-21 15:15:53 +02:00
atm
auxdisplay
base mm: oom analysis: add shmem vmstat 2009-09-22 07:17:27 -07:00
block Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
bluetooth pcmcia: dtl1_cs: fix pcmcia_loop_config logic 2009-09-15 10:17:16 -07:00
cdrom const: make block_device_operations const 2009-09-22 07:17:25 -07:00
char Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
clocksource
connector
cpufreq Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2009-09-18 09:16:57 -07:00
cpuidle cpuidle: menu governor: reduce latency on exit 2009-09-22 07:17:45 -07:00
crypto
dca
dio
dma at_hdmac: Rework suspend_late()/resume_early() 2009-09-14 20:27:00 +02:00
edac trivial: fix typo "for for" in multiple files 2009-09-21 15:14:54 +02:00
eisa
firewire driver model: constify attribute groups 2009-09-15 09:50:47 -07:00
firmware mm: don't use alloc_bootmem_low() where not strictly needed 2009-09-22 07:17:38 -07:00
gpio trivial: add __init/__exit macros in drivers/gpio/bt8xxgpio.c 2009-09-21 15:14:59 +02:00
gpu Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2009-09-22 07:51:28 -07:00
hwmon hwmon: applesmc: restore accelerometer and keyboard backlight on resume 2009-09-22 07:17:49 -07:00
i2c [PATCH] i2c-imx: make bus available early 2009-09-19 23:36:56 +01:00
ide Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
idle
ieee1394
ieee802154
infiniband trivial: fix typo "for for" in multiple files 2009-09-21 15:14:54 +02:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
isdn Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
leds
lguest trivial: fix typo "to to" in multiple files 2009-09-21 15:14:55 +02:00
macintosh trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
mca
md Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
media Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
memstick const: make block_device_operations const 2009-09-22 07:17:25 -07:00
message Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
mfd drivers/mfd/ab3100-core.c: fix powerpc build error 2009-09-22 07:17:24 -07:00
misc const: mark remaining super_operations const 2009-09-22 07:17:24 -07:00
mmc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
mtd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
net USB: Fix CDC EEM host driver 'sentinel' CRC validation 2009-09-23 06:46:34 -07:00
nubus
of
oprofile const: mark remaining super_operations const 2009-09-22 07:17:24 -07:00
parisc mm: replace various uses of num_physpages by totalram_pages 2009-09-22 07:17:38 -07:00
parport
pci Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2009-09-16 07:49:54 -07:00
pcmcia pcmcia: cleanup/fixup patch for sa1100_jornada_pcmcia driver 2009-09-22 07:17:42 -07:00
platform hp-wmi: Switch driver to dev_pm_ops 2009-09-14 20:26:59 +02:00
pnp pnp: add a shutdown method to pnp drivers 2009-09-22 07:17:49 -07:00
power
pps
ps3
rapidio
regulator regulator: Voltage count for AB3100 2009-09-17 15:48:24 +02:00
rtc trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
sbus const: make block_device_operations const 2009-09-22 07:17:25 -07:00
scsi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
serial uartlite: support shared interrupt lines 2009-09-19 13:13:38 -07:00
sh
sn
spi trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
ssb ssb/sdio: fix printk format warnings 2009-09-16 16:21:00 -04:00
staging Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
tc
telephony
thermal
uio Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2009-09-18 09:43:09 -07:00
usb USB: EHCI: rescan the queue after an unlink 2009-09-23 06:46:37 -07:00
uwb trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
video trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
virtio
vlynq
w1
watchdog [WATCHDOG] sizeof cleanup 2009-09-18 08:39:37 +00:00
xen Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
zorro
Kconfig
Makefile