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2a40f32454
linux/drivers/usb/host
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Alan Stern 2a40f32454 USB: EHCI: fix regression during bus resume 
This patch (as1663) fixes a regression caused by commit
6e0c3339a6 (USB: EHCI: unlink one async
QH at a time).  In order to avoid keeping multiple QHs in an unusable
intermediate state, that commit changed unlink_empty_async() so that
it unlinks only one empty QH at a time.

However, when the EHCI root hub is suspended, _all_ async QHs need to
be unlinked.  ehci_bus_suspend() used to do this by calling
unlink_empty_async(), but now this only unlinks one of the QHs, not
all of them.

The symptom is that when the root hub is resumed, USB communications
don't work for some period of time.  This is because ehci-hcd doesn't
realize it needs to restart the async schedule; it assumes that
because some QHs are already on the schedule, the schedule must be
running.

The easiest way to fix the problem is add a new function that unlinks
all the async QHs when the root hub is suspended.

This patch should be applied to all kernels that have the 6e0c3339a6
commit.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: Adrian Bassett <adrian.bassett@hotmail.co.uk>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-15 12:07:53 -07:00
..
whci USB: whci-hcd: fix NULL dereference on allocation failure 2012-08-15 15:17:39 -07:00
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
ehci-tegra.c usb: host: tegra: make use of PHY pointer of HCD 2013-01-28 11:42:11 -07:00
ehci-tilegx.c
ehci-timer.c USB: EHCI: revert "remove ASS/PSS polling timeout" 2013-02-26 13:22:38 -08:00
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
fhci-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
fhci-hub.c
fhci-mem.c
fhci-q.c
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
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
imx21-dbg.c
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
isp1362-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
isp1362.h
isp1760-hcd.c usb/isp1760: declare schedule_ptds() and errata2_function() static 2013-01-30 00:17:38 -05:00
isp1760-hcd.h
isp1760-if.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
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
octeon2-common.c
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
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-omap3.c ARM: arm-soc: Header cleanups 2012-12-12 11:45:16 -08:00
ohci-omap.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
oxu210hp-hcd.c
oxu210hp.h
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
sl811_cs.c
sl811-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
sl811.h
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
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
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 xhci: Avoid global symbol pollution with handshake. 2012-11-12 11:44:25 -08:00