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Alan Stern feca7746d5 USB: EHCI: don't check DMA values in QH overlays 
This patch (as1661) fixes a rather obscure bug in ehci-hcd.  In a
couple of places, the driver compares the DMA address stored in a QH's
overlay region with the address of a particular qTD, in order to see
whether that qTD is the one currently being processed by the hardware.
(If it is then the status in the QH's overlay region is more
up-to-date than the status in the qTD, and if it isn't then the
overlay's value needs to be adjusted when the QH is added back to the
active schedule.)

However, DMA address in the overlay region isn't always valid.  It
sometimes will contain a stale value, which may happen by coincidence
to be equal to a qTD's DMA address.  Instead of checking the DMA
address, we should check whether the overlay region is active and
valid.  The patch tests the ACTIVE bit in the overlay, and clears this
bit when the overlay becomes invalid (which happens when the
currently-executing URB is unlinked).

This is the second part of a fix for the regression reported at:

	https://bugs.launchpad.net/bugs/1088733

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Joseph Salisbury <joseph.salisbury@canonical.com>
Reported-and-tested-by: Stephen Thirlwall <sdt@dr.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2013-03-05 08:45:33 +08:00
..
whci USB: whci-hcd: fix NULL dereference on allocation failure 2012-08-15 15:17:39 -07:00
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
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: work around silicon bug in Intel's EHCI controllers 2013-03-05 08:45:33 +08:00
ehci-hub.c USB: EHCI: fix timer bug affecting port resume 2013-01-25 15:06:01 -08:00
ehci-mem.c USB: EHCI: use hrtimer for (s)iTD deallocation 2012-07-16 16:54:25 -07:00
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: don't check DMA values in QH overlays 2013-03-05 08:45:33 +08:00
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 USB: EHCI: Allow users to override 80% max periodic bandwidth 2011-07-08 14:51:33 -07:00
ehci-tegra.c usb: host: tegra: make use of PHY pointer of HCD 2013-01-28 11:42:11 -07:00
ehci-tilegx.c usb: add host support for the tilegx architecture 2012-07-18 16:40:29 -04:00
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 USB: FHCI: Reusing QUICC Engine USB Controller registers from immap_qe.h 2012-06-26 19:42:11 -07:00
fhci-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
fhci-hub.c USB: FHCI: Reusing QUICC Engine USB Controller registers from immap_qe.h 2012-06-26 19:42:11 -07:00
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 USB: FHCI: Reusing QUICC Engine USB Controller registers from immap_qe.h 2012-06-26 19:42:11 -07:00
fhci.h USB: FHCI: Reusing QUICC Engine USB Controller registers from immap_qe.h 2012-06-26 19:42:11 -07:00
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 Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb 2012-01-09 12:09:47 -08:00
imx21-dbg.c usb: Fix typo in imx21-dbg.c 2012-02-13 14:32:34 -08:00
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 usb/isp1760: Allow to optionally trigger low-level chip reset via GPIOLIB. 2011-10-19 13:29:06 -07:00
isp1760-if.c usb: remove use of __devexit 2012-11-21 13:27:17 -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 USB: ohci-dbg.c: remove dbg() usage 2012-05-01 21:33:37 -07:00
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 usb: add host support for the tilegx architecture 2012-07-18 16:40:29 -04:00
ohci-tmio.c usb: host: ohci-tmio: fix compile warning 2013-01-11 16:22:53 -08:00
ohci.h USB: move transceiver from ehci_hcd and ohci_hcd to hcd and rename it as phy 2012-06-13 12:38:36 -07:00
oxu210hp-hcd.c USB: oxu210hp-hcd.c: remove dbg() usage 2012-05-01 21:33:43 -07:00
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 usb/host/r8a66597: remove conditional compilation of clk code 2012-07-30 17:25:12 -07:00
sl811-hcd.c usb: remove use of __devexit 2012-11-21 13:27:17 -08:00
sl811.h
…
sl811_cs.c
…
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 USB: UHCI: Move PCI specific functions to uhci-pci.c 2011-05-06 18:24:00 -07:00
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: Correct the #define XHCI_LEGACY_DISABLE_SMI 2012-04-11 08:31:06 -07:00
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 xhci: Avoid "dead ports", add roothub port polling. 2013-01-03 14:10:29 -08:00
xhci.h xhci: Avoid global symbol pollution with handshake. 2012-11-12 11:44:25 -08:00