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0714a57c68
linux/drivers/usb/host
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Sarah Sharp 0714a57c68 xhci: Clear stopped_td when Stop Endpoint command completes. 
When an URB is cancelled, the xHCI driver issues a Stop Endpoint command
so that it can manipulate the ring and remove the transfer.  The xHC
hardware then places a transfer event with the completion code "Stopped"
or "Stopped Invalid" to let the driver know what TD it was in the middle
of processing.  This TD and TRB is stored in ep->stopped_td and
ep->stopped_trb.  These pointers are also used in handling stalled
endpoints.

By design, the Stop Endpoint command can race with URB completion.  By
the time the Stop Endpoint command is handled, the URBs to be cancelled
may have been given back to the driver.  Unfortunately, the stopped_td
and stopped_trb pointers were not getting cleared in this case.

The USB core unconditionally tries to reset the toggle bits on any
endpoints when a new alternate interface setting is installed.  When the
xHCI driver saw that ep->stopped_td was still set from the Stop Endpoint
command, xhci_reset_endpoint assumed the endpoint was actually stalled,
and attempted to clean up the endpoint rings.  This would manifest
itself in a failed Reset Endpoint command and failed Set TR dequeue
Pointer command after a successful Configure Endpoint command.  It may
have also been causing driver oops when the stopped_td was accessed.

This patch should be backported to stable kernels since 2.6.31.  Before
2.6.33, stopped_td was found in the xhci_endpoint_ring, not the
xhci_virt_ep.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2011-05-25 15:23:35 -07:00
..
whci Fix common misspellings 2011-03-31 11:26:23 -03:00
ehci-ath79.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-atmel.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-au1xxx.c USB: ehci-au1xxx: fix suspend callback 2011-05-06 18:16:39 -07:00
ehci-cns3xxx.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-dbg.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-fsl.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-fsl.h USB: ehci-fsl: add MPC5121E specific suspend and resume 2011-05-02 16:59:36 -07:00
ehci-grlib.c USB: EHCI: Add bus glue for GRLIB GRUSBHC controller 2011-05-03 11:43:48 -07:00
ehci-hcd.c USB: remove remaining usages of hcd->state from usbcore and fix regression 2011-05-19 16:34:04 -07:00
ehci-hub.c USB: extend ehci-fsl and fsl_udc_core driver for OTG operation 2011-05-02 16:59:38 -07:00
ehci-ixp4xx.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-lpm.c USB: Mark EHCI LPM functions as __maybe_unused 2011-02-17 10:47:55 -08:00
ehci-mem.c USB: EHCI: AMD periodic frame list table quirk 2010-11-16 13:36:40 -08:00
ehci-msm.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-mxc.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-octeon.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-omap.c Merge branch 2.6.39-rc7 into usb-linus 2011-05-10 13:30:45 -07:00
ehci-orion.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-pci.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-pmcmsp.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-ppc-of.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-ps3.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-q.c EHCI: don't rescan interrupt QHs needlessly 2011-05-17 11:20:24 -07:00
ehci-s5p.c USB: ehci-s5p : use __devinit and __devexit macros for probe and remove 2011-05-10 14:14:59 -07:00
ehci-sched.c USB: remove remaining usages of hcd->state from usbcore and fix regression 2011-05-19 16:34:04 -07:00
ehci-sh.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-spear.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-tegra.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-vt8500.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-w90x900.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci-xilinx-of.c USB: EHCI: Support controllers with big endian capability regs 2011-05-03 11:43:21 -07:00
ehci.h USB: EHCI: Remove SPARC_LEON {read,write}_be definitions from ehci.h 2011-05-19 16:49:52 -07:00
fhci-dbg.c
fhci-hcd.c Fix common misspellings 2011-03-31 11:26:23 -03:00
fhci-hub.c
fhci-mem.c
fhci-q.c
fhci-sched.c
fhci-tds.c Fix common misspellings 2011-03-31 11:26:23 -03:00
fhci.h Fix common misspellings 2011-03-31 11:26:23 -03:00
fsl-mph-dr-of.c USB: ehci-fsl: Fix 'have_sysif_regs' detection 2011-01-22 18:38:58 -08:00
hwa-hc.c
imx21-dbg.c treewide: fix a few typos in comments 2011-05-10 10:16:21 +02:00
imx21-hcd.c Fix common misspellings 2011-03-31 11:26:23 -03:00
imx21-hcd.h USB: imx21-hcd accept arbitary transfer buffer alignement. 2010-10-22 10:22:03 -07:00
isp116x-hcd.c USB: remove remaining usages of hcd->state from usbcore and fix regression 2011-05-19 16:34:04 -07:00
isp116x.h Fix common misspellings 2011-03-31 11:26:23 -03:00
isp1362-hcd.c sanitize <linux/prefetch.h> usage 2011-05-20 12:50:29 -07:00
isp1362.h
isp1760-hcd.c usb/isp1760: Fix possible unlink problems 2011-05-19 16:34:04 -07:00
isp1760-hcd.h usb/isp1760: Improve urb queueing, get rid of BUG():s in normal code paths 2011-05-02 17:03:50 -07:00
isp1760-if.c dt/usb: Eliminate users of of_platform_{,un}register_driver 2011-02-28 13:22:45 -07:00
Kconfig USB: UHCI: Support big endian GRUSBHC HC 2011-05-19 16:45:32 -07:00
Makefile USB: Add EHCI and OHCH glue for OCTEON II SOCs. 2010-10-29 19:08:44 +01:00
octeon2-common.c usb: Configure octeon2 glue logic for proper uSOF cycle period. 2011-05-03 10:09:32 -07:00
ohci-at91.c
ohci-ath79.c USB: ohci: add bus glue for the Atheros AR71XX/AR7240 SoCs 2011-04-13 16:58:19 -07:00
ohci-au1xxx.c USB: ohci-au1xxx: fix warning "__BIG_ENDIAN" is not defined 2011-04-13 15:44:03 -07:00
ohci-cns3xxx.c USB: cns3xxx: Add EHCI and OHCI bus glue for cns3xxx SOCs 2010-11-29 18:32:47 +03:00
ohci-da8xx.c
ohci-dbg.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
ohci-ep93xx.c
ohci-hcd.c USB: remove remaining usages of hcd->state from usbcore and fix regression 2011-05-19 16:34:04 -07:00
ohci-hub.c USB 3.0 Hub Changes 2011-03-13 18:07:11 -07:00
ohci-jz4740.c USB: ohci-jz4740: Fix spelling in MODULE_ALIAS 2010-11-11 07:14:07 -08:00
ohci-mem.c
ohci-octeon.c USB: Add EHCI and OHCH glue for OCTEON II SOCs. 2010-10-29 19:08:44 +01:00
ohci-omap3.c usb: host: omap: ehci and ohci simplification 2011-03-01 17:02:49 +02:00
ohci-omap.c
ohci-pci.c OHCI: fix regression caused by nVidia shutdown workaround 2011-05-17 11:20:23 -07:00
ohci-pnx4008.c i2c: Add support for custom probe function 2010-08-11 18:20:56 +02:00
ohci-pnx8550.c
ohci-ppc-of.c dt/usb: Eliminate users of of_platform_{,un}register_driver 2011-02-28 13:22:45 -07:00
ohci-ppc-soc.c
ohci-ps3.c
ohci-pxa27x.c ARM: ohci-pxa27x: enable OHCI over U2DC for pxa3xx 2010-10-08 16:21:17 +08:00
ohci-q.c USB host: Move AMD PLL quirk to pci-quirks.c 2011-03-01 16:01:45 -05:00
ohci-s3c2410.c USB: ohci-s3c2410: return proper error if clk_get fails 2011-05-06 18:16:40 -07:00
ohci-sa1111.c
ohci-sh.c usb: ohci-sh: Set IRQ as shared. 2010-11-01 17:01:27 -04:00
ohci-sm501.c USB: ohci-sm501: add iounmap on error path 2010-10-22 10:21:35 -07:00
ohci-spear.c USB host: Adding USB ehci & ohci support for spear platform 2010-11-16 13:53:29 -08:00
ohci-ssb.c USB: Add USB 2.0 to ssb ohci driver 2010-08-10 14:35:44 -07:00
ohci-tmio.c tmio: Silence warnings introduced by mfd changes 2011-03-23 10:42:01 +01:00
ohci.h Merge branch 'remove' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-03-16 19:05:40 -07:00
oxu210hp-hcd.c USB: remove remaining usages of hcd->state from usbcore and fix regression 2011-05-19 16:34:04 -07:00
oxu210hp.h
pci-quirks.c ehci: workaround for pci quirk timeout on ExoPC 2011-05-12 09:42:01 -07:00
pci-quirks.h USB host: Move AMD PLL quirk to pci-quirks.c 2011-03-01 16:01:45 -05:00
r8a66597-hcd.c USB 3.0 Hub Changes 2011-03-13 18:07:11 -07:00
r8a66597.h usb: r8a66597-hcd: Change mistake of the outsw function 2010-10-22 10:22:11 -07:00
sl811_cs.c pcmcia: move driver name to struct pcmcia_driver 2010-09-29 17:20:24 +02:00
sl811-hcd.c Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-05-23 12:33:02 -07:00
sl811.h
u132-hcd.c usb: u132-hcd: Drop __TIME__ usage 2011-04-13 16:36:06 -07:00
uhci-debug.c USB: UHCI: Add support for big endian descriptors 2011-05-19 16:43:20 -07:00
uhci-grlib.c USB: UHCI: Support big endian GRUSBHC HC 2011-05-19 16:45:32 -07:00
uhci-hcd.c Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-05-23 12:33:02 -07:00
uhci-hcd.h USB: UHCI: Add support for big endian descriptors 2011-05-19 16:43:20 -07:00
uhci-hub.c USB: UHCI: Wrap I/O register accesses 2011-05-06 18:24:01 -07:00
uhci-pci.c USB: UHCI: Move PCI specific functions to uhci-pci.c 2011-05-06 18:24:00 -07:00
uhci-q.c USB: UHCI: Add support for big endian descriptors 2011-05-19 16:43:20 -07:00
xhci-dbg.c xhci: Make xHCI driver endian-safe 2011-05-02 16:42:49 -07:00
xhci-ext-caps.h xHCI: prolong host controller halt time limit 2011-03-13 18:07:09 -07:00
xhci-hub.c xhci: move the common code to a function to get max ports and port array 2011-05-12 12:54:22 -07:00
xhci-mem.c xhci: Fix memory leak in ring cache deallocation. 2011-05-16 17:59:11 -07:00
xhci-pci.c xhci-hcd: Include <linux/slab.h> in xhci-pci.c 2011-04-29 17:33:12 -07:00
xhci-ring.c xhci: Clear stopped_td when Stop Endpoint command completes. 2011-05-25 15:23:35 -07:00
xhci.c xhci: Fix memory leak bug when dropping endpoints 2011-05-16 17:59:22 -07:00
xhci.h xHCI 1.0: Max Exit Latency Too Large Error 2011-05-09 09:34:48 -07:00