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Pavankumar Kondeti 3d037774b4 EHCI: Update qTD next pointer in QH overlay region during unlink 
There is a possibility of QH overlay region having reference to a stale
qTD pointer during unlink.

Consider an endpoint having two pending qTD before unlink process begins.
The endpoint's QH queue looks like this.

qTD1 --> qTD2 --> Dummy

To unlink qTD2, QH is removed from asynchronous list and Asynchronous
Advance Doorbell is programmed.  The qTD1's next qTD pointer is set to
qTD2'2 next qTD pointer and qTD2 is retired upon controller's doorbell
interrupt.  If QH's current qTD pointer points to qTD1, transfer overlay
region still have reference to qTD2. But qtD2 is just unlinked and freed.
This may cause EHCI system error.  Fix this by updating qTD next pointer
in QH overlay region with the qTD next pointer of the current qTD.

Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2012-09-10 16:01:37 -07:00
..
whci Merge branch 'for-next/dwc3' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next 2011-12-12 15:19:53 -08:00
Kconfig USB patches for 3.6-rc1 2012-07-26 10:23:47 -07:00
Makefile USB: Add driver for the ssb bus 2012-04-18 13:43:30 -07:00
alchemy-common.c
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bcma-hcd.c usb/bcma: Add missing #include <linux/slab.h> 2012-04-23 13:22:00 -07:00
ehci-atmel.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-au1xxx.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-cns3xxx.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-dbg.c USB: EHCI: add new root-hub state: STOPPING 2012-07-16 16:50:14 -07:00
ehci-fsl.c USB: ehci-fsl: Update ifdef check to work on 64-bit ppc 2012-07-16 17:11:12 -07:00
ehci-fsl.h fsl/usb: Add controller version based ULPI and UTMI phy support 2012-04-18 13:46:42 -07:00
ehci-grlib.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-hcd.c USB patches for 3.6-rc1 2012-07-26 10:23:47 -07:00
ehci-hub.c USB: EHCI: resolve some unlikely races 2012-07-16 16:56:48 -07:00
ehci-ixp4xx.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-lpm.c
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ehci-ls1x.c USB: Add EHCI bus glue for Loongson1x SoCs (UPDATED) 2012-01-24 15:28:02 -08:00
ehci-mem.c USB: EHCI: use hrtimer for (s)iTD deallocation 2012-07-16 16:54:25 -07:00
ehci-msm.c EHCI: centralize controller suspend/resume 2012-07-09 08:54:18 -07:00
ehci-mv.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-mxc.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-octeon.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-omap.c OMAP: USB : Fix the EHCI enumeration and core retention issue 2012-08-10 11:49:12 -07:00
ehci-orion.c ARM: SoC fixes 2012-07-26 20:29:52 -07:00
ehci-pci.c USB: EHCI: use hrtimer for the periodic schedule 2012-07-16 16:53:16 -07:00
ehci-platform.c EHCI: centralize controller suspend/resume 2012-07-09 08:54:18 -07:00
ehci-pmcmsp.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-ppc-of.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-ps3.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-q.c EHCI: Update qTD next pointer in QH overlay region during unlink 2012-09-10 16:01:37 -07:00
ehci-s5p.c USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer 2012-07-17 10:48:29 -07:00
ehci-sched.c USB: EHCI: simplify isochronous scanning 2012-07-16 16:56:47 -07:00
ehci-sead3.c usb: host: mips: sead3: Update for EHCI register structure. 2012-08-10 11:57:37 -07:00
ehci-sh.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-spear.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-sysfs.c
…
ehci-tegra.c usb: host: tegra: fix warning messages in ehci_remove 2012-08-10 11:57:37 -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: use hrtimer for the I/O watchdog 2012-07-16 16:56:47 -07:00
ehci-vt8500.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-w90x900.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-xilinx-of.c EHCI: centralize controller initialization 2012-07-09 13:35:05 -07:00
ehci-xls.c usb: host: tegra: pass correct pointer in ehci_setup() 2012-07-16 17:13:39 -07:00
ehci.h USB: EHCI: resolve some unlikely races 2012-07-16 16:56:48 -07:00
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: FHCI: Reusing QUICC Engine USB Controller registers from immap_qe.h 2012-06-26 19:42:11 -07:00
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: Reusing QUICC Engine USB Controller registers from immap_qe.h 2012-06-26 19:42:11 -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 fsl/usb: Add controller version based ULPI and UTMI phy support 2012-04-18 13:46:42 -07:00
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.c: Use clk_prepare_enable/clk_disable_unprepare 2012-06-12 13:31:03 +03:00
imx21-hcd.h
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isp116x-hcd.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
isp116x.h
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isp1362-hcd.c USB: isp1362-hcd.c: usb message always saved in case of underrun 2012-08-10 11:49:13 -07:00
isp1362.h
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isp1760-hcd.c isp1760-hcd: fix possible memory leak if urb could not be enqueued 2012-04-18 13:51:19 -07:00
isp1760-hcd.h
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isp1760-if.c isp1760-if: make module unloads correctly 2012-04-18 13:50:44 -07:00
octeon2-common.c
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ohci-at91.c USB: ohci-at91: fix PIO handling in relation with number of ports 2012-09-05 16:56:58 -07:00
ohci-au1xxx.c usb: [MIPS] fix unresolved err() reference in host/ohci-au1xxx.c 2012-05-01 18:36:09 -04:00
ohci-cns3xxx.c USB: ohci-cns3xxx.c: remove err() usage 2012-04-27 11:24:40 -07:00
ohci-da8xx.c ohci-da8xx: set MODULE_ALIAS to allow autoloading 2012-05-08 09:26:10 -07:00
ohci-dbg.c USB: ohci-dbg.c: remove dbg() usage 2012-05-01 21:33:37 -07:00
ohci-ep93xx.c USB: ohci-ep93xx.c: remove dbg() usage 2012-05-01 21:33:38 -07:00
ohci-exynos.c USB: ohci-exynos: Add support for device tree 2012-07-16 17:16:17 -07:00
ohci-hcd.c usb: add host support for the tilegx architecture 2012-07-18 16:40:29 -04:00
ohci-hub.c USB: ohci-hub: Mark ohci_finish_controller_resume() as __maybe_unused 2012-06-13 17:26:11 -07:00
ohci-jz4740.c
…
ohci-mem.c
…
ohci-nxp.c USB: ohci-nxp: add usbd and otg clock initialization 2012-06-20 16:20:24 -07:00
ohci-octeon.c
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ohci-omap.c usb/ohci-omap: remove unused variable 2012-08-08 21:13:01 +02:00
ohci-omap3.c ARM: OMAP: USBHOST: Replace usbhs core driver APIs by Runtime pm APIs 2011-12-16 04:29:57 -07:00
ohci-pci.c usb: add support for STA2X11 host driver 2012-01-24 14:15:37 -08:00
ohci-platform.c usb: Fix various typo within usb 2012-04-18 13:57:26 -07:00
ohci-pnx8550.c usb: [MIPS] fix unresolved err() reference in host/ohci-pnx8550.c 2012-05-01 18:36:09 -04:00
ohci-ppc-of.c USB: ohci-ppc-of.c: remove err() usage 2012-04-27 11:24:42 -07:00
ohci-ppc-soc.c USB: ohci-ppc-soc.c: remove err() usage 2012-04-27 11:24:42 -07:00
ohci-ps3.c USB: ohci-ps3.c: remove err() usage 2012-04-27 11:24:43 -07:00
ohci-pxa27x.c usb: [ARM] fix unresolved err() reference in host/ohci-pxa27x.c 2012-05-01 18:36:09 -04:00
ohci-q.c
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ohci-s3c2410.c USB: ohci-s3c2410.c: remove err() usage 2012-04-27 11:24:43 -07:00
ohci-sa1111.c USB: ohci-sa1111.c: remove dbg() usage 2012-05-01 21:33:39 -07:00
ohci-sh.c USB: ohci-sh.c: remove err() usage 2012-04-27 11:24:44 -07:00
ohci-sm501.c
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ohci-spear.c USB: ehci: ohci: Add clk_{un}prepare() support 2012-04-18 14:33:43 -07:00
ohci-tilegx.c usb: add host support for the tilegx architecture 2012-07-18 16:40:29 -04:00
ohci-tmio.c USB: ohci-tmio.c: remove err() usage 2012-04-27 11:24:44 -07:00
ohci-xls.c USB: ohci-xls.c: remove err() usage 2012-04-27 11:24:45 -07:00
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
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pci-quirks.c xhci: Make handover code more robust 2012-09-05 12:07:17 -07:00
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/host/r8a66597: remove conditional compilation of clk code 2012-07-30 17:25:12 -07:00
r8a66597.h usb/host/r8a66597: remove conditional compilation of clk code 2012-07-30 17:25:12 -07:00
sl811-hcd.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
sl811.h
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sl811_cs.c
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ssb-hcd.c usb/ssb: Add missing #include <linux/slab.h> 2012-04-23 13:22:00 -07:00
u132-hcd.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
uhci-debug.c
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uhci-grlib.c
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uhci-hcd.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
uhci-hcd.h
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uhci-hub.c UHCI: hub_status_data should indicate if ports are resuming 2012-04-09 15:43:21 -07:00
uhci-pci.c
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uhci-q.c usb: fix number of mapped SG DMA entries 2011-12-09 16:18:19 -08:00
xhci-dbg.c xHCI: correct to print the true HSEE of USBCMD 2012-04-10 15:21:52 -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 usb: host: xhci: Fix Compliance Mode on SN65LVPE502CP Hardware 2012-09-05 12:07:18 -07:00
xhci-mem.c xhci: Don't free endpoints in xhci_mem_cleanup() 2012-06-13 16:37:30 -07:00
xhci-pci.c xhci: Switch PPT ports to EHCI on shutdown. 2012-08-09 12:43:28 -07:00
xhci-plat.c usb: host: xhci-plat: use ioremap_nocache 2012-09-05 12:07:19 -07:00
xhci-ring.c xhci: Fix bug after deq ptr set to link TRB. 2012-08-08 12:17:38 -07:00
xhci.c usb: host: xhci: Fix Compliance Mode on SN65LVPE502CP Hardware 2012-09-05 12:07:18 -07:00
xhci.h usb: host: xhci: Fix Compliance Mode on SN65LVPE502CP Hardware 2012-09-05 12:07:18 -07:00