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linux/drivers/usb/host
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Alan Stern 3a44494e23 USB: EHCI: rescan the queue after an unlink 
This patch (as1280) fixes an obscure bug in ehci-hcd's dequeuing logic
for async URBs.  If a later URB is unlinked and the completion
routine unlinks an earlier URB, then the earlier URB won't be given
back in a timely manner because the endpoint queue isn't rescanned as
it should be.

Similar bugs occur if an endpoint is reset or a halt is cleared while
a completion routine is running, because the subroutines don't test
for the COMPLETING state.

All these problems are solved by adding a new needs_rescan flag to the
ehci_qh structure.  If the flag is set while scanning through an idle
QH, the scan will be repeated.  If the QH isn't idle then an unlink
cycle will be initiated, and the proper action will be taken when it
becomes idle.

Also, an unnecessary test is removed from qh_link_async(): That
routine is never called if the QH's state isn't IDLE.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
 		2009-09-23 06:46:37 -07:00
..
whci USB: whci-hcd: make endpoint_reset method async 2009-09-23 06:46:21 -07:00
Kconfig USB: NXP ISP1362 USB host driver 2009-09-23 06:46:30 -07:00
Makefile USB: NXP ISP1362 USB host driver 2009-09-23 06:46:30 -07:00
ehci-atmel.c USB: at91: Add USB EHCI driver for at91sam9g45 series 2009-09-23 06:46:30 -07:00
ehci-au1xxx.c USB: au1xxx: add dev_pm_ops 2009-09-23 06:46:29 -07:00
ehci-dbg.c USB: EHCI: split ehci_qh into hw and sw parts 2009-09-23 06:46:29 -07:00
ehci-fsl.c USB: EHCI: use the new clear_tt_buffer interface 2009-07-12 15:16:39 -07:00
ehci-fsl.h
…
ehci-hcd.c USB: EHCI: rescan the queue after an unlink 2009-09-23 06:46:37 -07:00
ehci-hub.c USB: EHCI: ensure all watchdog timer events are deleted when suspending usb 2009-09-23 06:46:33 -07:00
ehci-ixp4xx.c USB: EHCI: use the new clear_tt_buffer interface 2009-07-12 15:16:39 -07:00
ehci-mem.c USB: EHCI: split ehci_qh into hw and sw parts 2009-09-23 06:46:29 -07:00
ehci-orion.c USB: ehci-orion: Call ehci_reset before ehci_halt 2009-07-28 14:31:10 -07:00
ehci-pci.c USB: EHCI: add need_io_watchdog flag to ehci_hcd 2009-09-23 06:46:28 -07:00
ehci-ppc-of.c USB: EHCI: use the new clear_tt_buffer interface 2009-07-12 15:16:39 -07:00
ehci-ps3.c USB: EHCI: use the new clear_tt_buffer interface 2009-07-12 15:16:39 -07:00
ehci-q.c USB: EHCI: rescan the queue after an unlink 2009-09-23 06:46:37 -07:00
ehci-sched.c USB: EHCI: split ehci_qh into hw and sw parts 2009-09-23 06:46:29 -07:00
ehci-w90x900.c USB: Add nuvoton Ehci driver for w90p910 platform 2009-09-23 06:46:20 -07:00
ehci.h USB: EHCI: rescan the queue after an unlink 2009-09-23 06:46:37 -07:00
fhci-dbg.c USB: FHCI: use the new usb debugfs directory 2009-06-15 21:44:43 -07:00
fhci-hcd.c USB: FHCI: use dev_name() in place of bus_id. 2009-03-24 16:38:23 -07:00
fhci-hub.c USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
fhci-mem.c USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
fhci-q.c USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
fhci-sched.c USB: fhci: mutually exclusive port_status 2009-07-12 15:16:36 -07:00
fhci-tds.c USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
fhci.h USB: Driver for Freescale QUICC Engine USB Host Controller 2009-01-27 16:15:38 -08:00
hwa-hc.c wusb: hwa-hc: Drop unused pci_suspend/resume hooks. 2009-06-15 21:44:44 -07:00
isp116x-hcd.c USB: make transfer_buffer_lengths in struct urb field u32 2009-03-24 16:20:36 -07:00
isp116x.h USB: add missing KERN_* constants to printks 2009-03-24 16:20:30 -07:00
isp1362-hcd.c USB: isp1362: Correct use of ! and & 2009-09-23 06:46:33 -07:00
isp1362.h USB: isp1362: fix pulldown register defines and conf logic 2009-09-23 06:46:33 -07:00
isp1760-hcd.c USB: isp1760: allow platform devices to customize devflags 2009-09-23 06:46:29 -07:00
isp1760-hcd.h USB: isp1760: allow platform devices to customize devflags 2009-09-23 06:46:29 -07:00
isp1760-if.c USB: isp1760: allow platform devices to customize devflags 2009-09-23 06:46:29 -07:00
ohci-at91.c USB: at91: modify OHCI driver to allow shared interrupts 2009-09-23 06:46:31 -07:00
ohci-au1xxx.c USB: au1xxx: add dev_pm_ops 2009-09-23 06:46:29 -07:00
ohci-dbg.c USB: OHCI: use the ohci structure directly in debugfs files. 2009-06-15 21:44:43 -07:00
ohci-ep93xx.c USB: ohci-ep93xx.c: remove unused variable 2009-09-23 06:46:34 -07:00
ohci-hcd.c USB: EHCI: OHCI: Remove unnecessary includes of reboot.h 2009-09-23 06:46:32 -07:00
ohci-hub.c USB: OHCI: fix endless polling behavior 2008-10-17 14:41:04 -07:00
ohci-lh7a404.c
…
ohci-mem.c
…
ohci-omap.c USB: OMAP: OHCI: hc_driver's stop method should call ohci_stop 2009-07-28 14:31:09 -07:00
ohci-pci.c USB: new flag for resume-from-hibernation 2009-06-15 21:44:44 -07:00
ohci-pnx4008.c USB: Convert ohci-pnx4008 to a new-style i2c driver 2009-01-07 09:59:53 -08:00
ohci-pnx8550.c
…
ohci-ppc-of.c USB: powerpc: Workaround for the PPC440EPX USBH_23 errata [take 3] 2009-01-07 09:59:52 -08:00
ohci-ppc-soc.c
…
ohci-ps3.c usb/ps3: Add missing annotations 2009-06-16 14:17:32 +10:00
ohci-pxa27x.c USB: ohci-pxa27x: Allow NOCP and OCPM to be cleared 2009-09-23 06:46:32 -07:00
ohci-q.c trivial: OHCI: Fix typo in a comment 2009-09-21 15:14:51 +02:00
ohci-s3c2410.c USB: S3C: Move usb-control.h to platform include 2009-03-24 16:20:45 -07:00
ohci-sa1111.c
…
ohci-sh.c
…
ohci-sm501.c
…
ohci-ssb.c
…
ohci-tmio.c usb: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-07 09:59:52 -08:00
ohci.h usb: remove code associated with !CONFIG_PPC_MERGE 2008-10-17 14:40:57 -07:00
oxu210hp-hcd.c USB: EHCI: OHCI: Remove unnecessary includes of reboot.h 2009-09-23 06:46:32 -07:00
oxu210hp.h USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
pci-quirks.c USB: Work around BIOS bugs by quiescing USB controllers earlier 2009-09-23 06:46:33 -07:00
pci-quirks.h
…
r8a66597-hcd.c usb: fix hibernate in r8a66597-hcd dev_pm_ops conversion. 2009-07-29 21:31:13 +09:00
r8a66597.h usb: move r8a66597 register defines 2009-07-23 13:04:10 +09:00
sl811-hcd.c USB: sl811-hcd: Fix device disconnect: 2009-09-23 06:46:16 -07:00
sl811.h
…
sl811_cs.c
…
u132-hcd.c
…
uhci-debug.c USB: uhci: don't use pseudo negative values 2009-03-24 16:20:36 -07:00
uhci-hcd.c debugfs: Modified default dir of debugfs for debugging UHCI. 2009-09-15 09:50:49 -07:00
uhci-hcd.h USB: replace uses of __constant_{endian} 2009-03-24 16:20:33 -07:00
uhci-hub.c
…
uhci-q.c USB: uhci: rm repeatedly evaluation for urbp->qh 2009-09-23 06:46:30 -07:00
xhci-dbg.c USB: xhci: Fix slot and endpoint context debugging. 2009-09-23 06:46:17 -07:00
xhci-ext-caps.h USB: xhci: Support xHCI host controllers and USB 3.0 devices. 2009-06-15 21:44:48 -07:00
xhci-hcd.c USB: xhci: Support interrupt transfers. 2009-09-23 06:46:18 -07:00
xhci-hub.c USB: xhci: Root hub support. 2009-06-15 21:44:48 -07:00
xhci-mem.c USB: xhci: Set correct max packet size for HS/FS control endpoints. 2009-09-23 06:46:17 -07:00
xhci-pci.c USB: xhci: Add quirk for Fresco Logic xHCI hardware. 2009-09-23 06:46:17 -07:00
xhci-ring.c USB: xhci: Support interrupt transfers. 2009-09-23 06:46:18 -07:00
xhci.h USB: xhci: Support interrupt transfers. 2009-09-23 06:46:18 -07:00