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Alan Stern d714aaf649 USB: EHCI: fix regression in QH unlinking 
This patch (as1670) fixes a regression caused by commit
6402c796d3 (USB: EHCI: work around
silicon bug in Intel's EHCI controllers).  The workaround goes through
two IAA cycles for each QH being unlinked.  During the first cycle,
the QH is not added to the async_iaa list (because it isn't fully gone
from the hardware yet), which means that list will be empty.

Unfortunately, I forgot to update the IAA watchdog timer routine.  It
thinks that an empty async_iaa list means the timer expiration was an
error, which isn't true any more.  This problem didn't show up during
initial testing because the controllers being tested all had working
IAA interrupts.  But not all controllers do, and when the watchdog
timer expires, the empty-list check prevents the second IAA cycle from
starting.  As a result, URB unlinks never complete.  The check needs
to be removed.

Among the symptoms of the regression are processes stuck in D wait
states and hangs during system shutdown.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: Stephen Warren <swarren@wwwdotorg.org>
Reported-and-tested-by: Sven Joachim <svenjoac@gmx.de>
Reported-by: Andreas Bombe <aeb@debian.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2013-03-20 16:17:22 -07:00
..
whci
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Kconfig Revert "USB: EHCI: make ehci-vt8500 a separate driver" 2013-02-20 10:26:31 -08:00
Makefile Revert "USB: EHCI: make ehci-vt8500 a separate driver" 2013-02-20 10:26:31 -08:00
bcma-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
ehci-atmel.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ehci-dbg.c USB: EHCI: remove unused Link Power Management code 2012-10-31 12:48:07 -07:00
ehci-fsl.c USB: ehci-fsl: fix regression on mpc5121e 2013-01-11 16:01:07 -08:00
ehci-fsl.h powerpc/usb: fix bug of CPU hang when missing USB PHY clock 2012-09-05 16:52:08 -07:00
ehci-grlib.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ehci-hcd.c USB: EHCI: fix regression during bus resume 2013-03-15 12:07:53 -07:00
ehci-hub.c USB: EHCI: fix regression during bus resume 2013-03-15 12:07:53 -07:00
ehci-mem.c
…
ehci-msm.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
ehci-mv.c usb: gadget: patches for v3.9 merge window 2013-01-25 09:08:05 -08:00
ehci-mxc.c USB patches for 3.9-rc1 2013-02-21 12:20:00 -08:00
ehci-octeon.c USB: EHCI: remove ehci_port_power() routine 2012-10-31 12:48:07 -07:00
ehci-omap.c This is the MFD pull request for the 3.9 merge window. 2013-02-24 20:00:58 -08:00
ehci-orion.c Revert "USB: EHCI: make ehci-orion a separate driver" 2013-02-20 10:25:44 -08:00
ehci-pci.c USB: ehci: make debug port in-use detection functional again 2013-01-07 10:34:33 -08:00
ehci-platform.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ehci-pmcmsp.c USB: EHCI: remove ehci_port_power() routine 2012-10-31 12:48:07 -07:00
ehci-ppc-of.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ehci-ps3.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
ehci-q.c USB: EHCI: fix regression during bus resume 2013-03-15 12:07:53 -07:00
ehci-s5p.c usb: xceiv: patches for v3.9 merge window 2013-01-25 09:09:46 -08:00
ehci-sched.c USB: EHCI: fix bug in scheduling periodic split transfers 2013-01-31 10:14:48 +01:00
ehci-sead3.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ehci-sh.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ehci-spear.c usb: remove use of __devinitdata 2012-11-21 13:27:16 -08:00
ehci-sysfs.c
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ehci-tegra.c usb: host: tegra: make use of PHY pointer of HCD 2013-01-28 11:42:11 -07:00
ehci-tilegx.c
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ehci-timer.c USB: EHCI: fix regression in QH unlinking 2013-03-20 16:17:22 -07:00
ehci-vt8500.c Revert "USB: EHCI: make ehci-vt8500 a separate driver" 2013-02-20 10:26:31 -08:00
ehci-w90x900.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
ehci-xilinx-of.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ehci.h USB: EHCI: add a name for the platform-private field 2013-01-22 09:22:13 -08:00
fhci-dbg.c
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fhci-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
fhci-hub.c
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fhci-mem.c
…
fhci-q.c
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fhci-sched.c USB: FHCI: use list_move_tail instead of list_del/list_add_tail 2012-09-05 16:55:18 -07:00
fhci-tds.c
…
fhci.h
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fsl-mph-dr-of.c USB: fsl-mph-dr-of: fix regression on mpc5121e 2013-01-11 16:01:06 -08:00
hwa-hc.c
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imx21-dbg.c
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imx21-hcd.c usb: imx21-hcd: Include missing linux/module.h 2013-01-11 12:01:09 -08:00
imx21-hcd.h ARM: imx: move platform_data definitions 2012-09-14 11:17:21 +02:00
isp116x-hcd.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
isp116x.h
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isp1362-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
isp1362.h
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isp1760-hcd.c usb/isp1760: declare schedule_ptds() and errata2_function() static 2013-01-30 00:17:38 -05:00
isp1760-hcd.h
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isp1760-if.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
octeon2-common.c
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ohci-at91.c ARM: arm-soc: Header cleanups 2012-12-12 11:45:16 -08:00
ohci-da8xx.c ARM: davinci: move platform_data definitions 2012-09-14 11:16:54 +02:00
ohci-dbg.c
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ohci-ep93xx.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
ohci-exynos.c usb: xceiv: patches for v3.9 merge window 2013-01-25 09:09:46 -08:00
ohci-hcd.c USB: OHCI: remove Alchemy OHCI platform driver. 2012-10-22 11:29:12 -07:00
ohci-hub.c USB: ohci: merge ohci_finish_controller_resume with ohci_resume 2012-10-22 11:23:59 -07:00
ohci-jz4740.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
ohci-mem.c
…
ohci-nxp.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ohci-octeon.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
ohci-omap.c ARM: arm-soc: Header cleanups 2012-12-12 11:45:16 -08:00
ohci-omap3.c ARM: arm-soc: Header cleanups 2012-12-12 11:45:16 -08:00
ohci-pci.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
ohci-platform.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ohci-ppc-of.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
ohci-ps3.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
ohci-pxa27x.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
ohci-q.c USB: ohci: set urb->hcpriv = NULL immediately, after free it 2013-01-11 16:03:38 -08:00
ohci-s3c2410.c usb: Convert to devm_ioremap_resource() 2013-01-22 11:41:58 -08:00
ohci-sa1111.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
ohci-sm501.c USB: OHCI: sm501: fix build failure after ohci_finish_controller_resume removal 2012-10-23 10:18:53 -07:00
ohci-spear.c usb: remove use of __devinitdata 2012-11-21 13:27:16 -08:00
ohci-tilegx.c
…
ohci-tmio.c usb: host: ohci-tmio: fix compile warning 2013-01-11 16:22:53 -08:00
ohci.h
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oxu210hp-hcd.c
…
oxu210hp.h
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pci-quirks.c usb: Prevent dead ports when xhci is not enabled 2013-01-24 09:56:19 -08:00
pci-quirks.h usb: host: xhci: fix compilation error for non-PCI based stacks 2012-09-05 12:26:11 -07:00
r8a66597-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
r8a66597.h
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sl811-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
sl811.h
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sl811_cs.c
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ssb-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
u132-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
uhci-debug.c USB: uhci: beautify source code 2013-01-24 13:59:26 -08:00
uhci-grlib.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
uhci-hcd.c Merge 3.8-rc5 into usb-next 2013-01-25 12:41:02 -08:00
uhci-hcd.h USB: UHCI: remove unused definition 2013-01-24 13:42:09 -08:00
uhci-hub.c Merge usb-linus branch into usb-next 2013-02-08 12:03:11 -08:00
uhci-pci.c
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uhci-platform.c usb: remove use of __devinit 2012-11-21 13:27:16 -08:00
uhci-q.c USB: uhci: check buffer length to avoid memory overflow 2013-01-24 13:42:09 -08:00
xhci-dbg.c xhci: trivial: Remove assigned but unused slot_ctx. 2012-10-25 13:13:48 -07:00
xhci-ext-caps.h
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xhci-hub.c xhci: Avoid "dead ports", add roothub port polling. 2013-01-03 14:10:29 -08:00
xhci-mem.c xhci: Handle HS bulk/ctrl endpoints that don't NAK. 2013-01-03 14:09:55 -08:00
xhci-pci.c usb: host: xhci: move HC_STATE_SUSPENDED check to xhci_suspend() 2012-11-12 11:45:34 -08:00
xhci-plat.c usb: host: xhci-plat: use ioremap_nocache 2012-09-05 12:07:19 -07:00
xhci-ring.c Merge usb-linus branch into usb-next 2013-02-08 12:03:11 -08:00
xhci.c USB: xhci: correctly enable interrupts 2013-03-15 12:07:53 -07:00
xhci.h USB: xhci - fix bit definitions for IMAN register 2013-03-18 08:25:13 -07:00