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b05dadb28f
linux/drivers/usb/host
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Mathias Nyman b05dadb28f xhci: flush endpoint start to reduce race risk with stop endpoint command. 
Stop endpoint command fails with "context state error" if the endpoint is
already stopped.

This case was observed when a previous URB cancel had just completed and
rang the doorbell to restart the ring, when a new URB cancel queued a stop
endpoint command.
>From xHC hardware pov the endpoint had not yet started, so the stop
endpoint command failed with context state error.
Right after this the doorbell ring took effect and ring was restarted.

Interrupt handler saw a stop endpoint command completion event with
"context state error" and discovered that the ring was back up in
running state.

flushing the write reduces these cases in stress testing, but does not
completely remove the issue.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210129130044.206855-15-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-29 14:16:51 +01:00
..
bcma-hcd.c USB: bcma: use module_bcma_driver to simplify the code 2020-09-22 10:37:13 +02:00
ehci-atmel.c
ehci-brcm.c usb: ehci: Add new EHCI driver for Broadcom STB SoC's 2020-05-13 14:28:01 +02:00
ehci-dbg.c usb: host: Use fallthrough pseudo-keyword 2020-07-10 08:55:18 +02:00
ehci-exynos.c usb: host: ehci-exynos: Fix error check in exynos_ehci_probe() 2020-06-18 10:40:57 +02:00
ehci-fsl.c usb: hosts: Remove in_interrupt() from comments 2020-10-28 12:32:12 +01:00
ehci-fsl.h USB: host: Use the correct style for SPDX License Identifier 2020-04-16 14:32:46 +02:00
ehci-grlib.c
ehci-hcd.c ehci: fix EHCI host controller initialization sequence 2021-01-12 17:16:37 +01:00
ehci-hub.c USB: ehci: fix an interrupt calltrace error 2021-01-12 17:24:27 +01:00
ehci-mem.c
ehci-mv.c USB: EHCI: ehci-mv: fix less than zero comparison of an unsigned int 2020-05-19 15:11:43 +02:00
ehci-npcm7xx.c usb/host: ehci-npcm7xx: Use pm_ptr() macro 2020-09-04 16:54:47 +02:00
ehci-omap.c usb: ehci-omap: Fix PM disable depth umbalance in ehci_hcd_omap_probe 2020-12-09 14:33:45 +01:00
ehci-orion.c
ehci-pci.c USB: Remove pci-dma-compat wrapper APIs. 2020-07-15 16:48:10 +02:00
ehci-platform.c usb: host: ehci-platform: Add workaround for brcm, xgs-iproc-ehci 2020-09-14 16:45:28 +02:00
ehci-pmcmsp.c USB: host: ehci-pmcmsp: Cleanup usb_hcd_msp_remove() 2020-10-28 12:32:26 +01:00
ehci-ppc-of.c
ehci-ps3.c powerpc/ps3: make system bus's remove and shutdown callbacks return void 2020-12-04 01:01:22 +11:00
ehci-q.c usb: host: Use fallthrough pseudo-keyword 2020-07-10 08:55:18 +02:00
ehci-sched.c usb: host: ehci-sched: add comment about find_tt() not returning error 2020-10-28 12:21:38 +01:00
ehci-sh.c usb: host: ehci-sh: Remove unused platform data support 2019-12-10 11:34:27 +01:00
ehci-spear.c usb/host: ehci-spear: Use pm_ptr() macro 2020-09-04 16:54:45 +02:00
ehci-st.c
ehci-sysfs.c
ehci-timer.c
ehci-xilinx-of.c
ehci.h USB: host: Use the correct style for SPDX License Identifier 2020-04-16 14:32:46 +02:00
fhci-dbg.c
fhci-hcd.c usb: host: fhci-hcd: annotate PIPE_CONTROL switch case with fallthrough 2020-02-19 11:08:52 +01:00
fhci-hub.c
fhci-mem.c
fhci-q.c
fhci-sched.c USB/Thunderbolt patches for 5.9-rc1 2020-08-05 12:13:10 -07:00
fhci-tds.c usb: host: fhci-tds: Remove unused variables 'buf' and 'extra_data' 2020-07-09 17:19:59 +02:00
fhci.h USB: host: Use the correct style for SPDX License Identifier 2020-04-16 14:32:46 +02:00
fotg210-hcd.c usb: fotg210-hcd: remove casting dma_alloc_coherent 2020-12-09 15:25:19 +01:00
fotg210.h USB: Replace zero-length array with flexible-array member 2020-02-23 19:24:51 +01:00
fsl-mph-dr-of.c usb: host: fsl-mph-dr-of: check return of dma_set_mask() 2020-10-28 13:19:31 +01:00
isp116x-hcd.c usb: Fix fall-through warnings for Clang 2020-11-23 17:46:01 +01:00
isp116x.h
isp1362-hcd.c usb: Use fallthrough pseudo-keyword 2020-07-10 08:55:17 +02:00
isp1362.h USB: host: isp1362: delete isp1362_show_regs() 2020-10-28 13:08:22 +01:00
Kconfig usb: host: ehci-tegra: Remove the driver 2021-01-13 11:26:34 +01:00
Makefile usb: host: ehci-tegra: Remove the driver 2021-01-13 11:26:34 +01:00
max3421-hcd.c usb: Fix fall-through warnings for Clang 2020-11-23 17:46:01 +01:00
ohci-at91.c usb: hosts: Remove in_interrupt() from comments 2020-10-28 12:32:12 +01:00
ohci-da8xx.c usb: ohci-da8xx: ensure error return on variable error is set 2020-01-08 17:34:18 +01:00
ohci-dbg.c
ohci-exynos.c usb: host: ohci-exynos: Fix error handling in exynos_ohci_probe() 2020-08-27 09:25:58 +02:00
ohci-hcd.c usb: fix a few cases of -Wfallthrough 2020-11-13 15:20:52 +01:00
ohci-hub.c usb: fix a few cases of -Wfallthrough 2020-11-13 15:20:52 +01:00
ohci-mem.c
ohci-nxp.c
ohci-omap.c Merge 5.10-rc7 into usb-next 2020-12-07 10:20:51 +01:00
ohci-pci.c USB: OHCI: remove obsolete FIXME comment 2020-06-19 08:58:44 +02:00
ohci-platform.c usb/ohci-platform: Fix a warning when hibernating 2020-05-18 18:15:39 +02:00
ohci-ppc-of.c
ohci-ps3.c powerpc/ps3: make system bus's remove and shutdown callbacks return void 2020-12-04 01:01:22 +11:00
ohci-pxa27x.c usb: hosts: Remove in_interrupt() from comments 2020-10-28 12:32:12 +01:00
ohci-q.c USB: OHCI: Use fallthrough pseudo-keyword 2020-07-10 08:55:18 +02:00
ohci-s3c2410.c usb: hosts: Remove in_interrupt() from comments 2020-10-28 12:32:12 +01:00
ohci-sa1111.c
ohci-sm501.c USB: ohci-sm501: Add missed iounmap() in remove 2020-06-18 10:42:53 +02:00
ohci-spear.c
ohci-st.c
ohci-tmio.c USB: OHCI: Use fallthrough pseudo-keyword 2020-07-10 08:55:18 +02:00
ohci.h usb: host: ohci: Mark cc_to_error as __maybe_unused 2020-07-03 10:18:40 +02:00
oxu210hp-hcd.c usb: oxu210hp-hcd: Fix memory leak in oxu_create 2020-12-09 15:25:21 +01:00
pci-quirks.c usb: pci-quirks: convert to readl_poll_timeout_atomic() 2020-09-25 16:30:05 +02:00
pci-quirks.h
r8a66597-hcd.c usb: host: r8a66597-hcd: Remove set, then over-written, but never used variable 'tmp' 2020-07-09 17:19:57 +02:00
r8a66597.h USB: host: Use the correct style for SPDX License Identifier 2020-04-16 14:32:46 +02:00
sl811_cs.c
sl811-hcd.c usb: host: sl811: Switch to use platform_get_mem_or_io() 2020-12-10 16:31:46 +01:00
sl811.h
ssb-hcd.c
u132-hcd.c USB: host: u123-hcd: remove trailing semicolon in macro definition 2020-12-09 15:24:42 +01:00
uhci-debug.c
uhci-grlib.c
uhci-hcd.c
uhci-hcd.h
uhci-hub.c
uhci-pci.c usb: hci: add hc_driver as argument for usb_hcd_pci_probe 2020-05-15 15:44:34 +02:00
uhci-platform.c
uhci-q.c
xhci-dbg.c
xhci-dbgcap.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
xhci-dbgcap.h xhci: dbc: remove tty specific port structure from struct xhci_dbc 2020-07-23 17:05:29 +02:00
xhci-dbgtty.c usb: xhci: convert tasklets to use new tasklet_setup() API 2020-08-18 13:00:01 +02:00
xhci-debugfs.c usb: xhci: add debugfs support for ep with stream 2020-09-20 16:18:00 +02:00
xhci-debugfs.h usb: xhci: add debugfs support for ep with stream 2020-09-20 16:18:00 +02:00
xhci-ext-caps.c
xhci-ext-caps.h USB: host: Use the correct style for SPDX License Identifier 2020-04-16 14:32:46 +02:00
xhci-histb.c xhci: hisilicon: fix refercence leak in xhci_histb_probe 2020-11-13 14:32:43 +01:00
xhci-hub.c xhci: Give USB2 ports time to enter U3 in bus suspend 2020-12-09 14:32:03 +01:00
xhci-mem.c xhci: remove xhci_stream_id_to_ring() helper 2021-01-29 14:16:50 +01:00
xhci-mtk-sch.c usb: xhci-mtk: fix the failure of bandwidth allocation 2020-07-21 14:05:49 +02:00
xhci-mtk.c usb: xhci-mtk: Fix typo 2020-08-18 12:12:54 +02:00
xhci-mtk.h USB: host: Use the correct style for SPDX License Identifier 2020-04-16 14:32:46 +02:00
xhci-mvebu.c
xhci-mvebu.h USB: host: Use the correct style for SPDX License Identifier 2020-04-16 14:32:46 +02:00
xhci-pci-renesas.c usb: renesas-xhci: remove version check 2020-08-18 11:55:23 +02:00
xhci-pci.c xhci-pci: Allow host runtime PM as default for Intel Maple Ridge xHCI 2020-12-09 14:32:03 +01:00
xhci-pci.h usb: xhci: make symbols static 2020-05-19 14:11:55 +02:00
xhci-plat.c usb: xhci: Set quirk for XHCI_SG_TRB_CACHE_SIZE_QUIRK 2020-12-09 14:32:00 +01:00
xhci-plat.h usb: host: xhci-plat: add .suspend_quirk for struct xhci_plat_priv 2020-09-20 16:18:00 +02:00
xhci-rcar.c usb: xhci-rcar: convert to readl_poll_timeout_atomic() 2020-09-25 16:30:05 +02:00
xhci-rcar.h USB: host: Use the correct style for SPDX License Identifier 2020-04-16 14:32:46 +02:00
xhci-ring.c xhci: flush endpoint start to reduce race risk with stop endpoint command. 2021-01-29 14:16:51 +01:00
xhci-tegra.c xhci: tegra: Delay for disabling LFPS detector 2021-01-15 17:27:31 +01:00
xhci-trace.c
xhci-trace.h USB: host: Use the correct style for SPDX License Identifier 2020-04-16 14:32:46 +02:00
xhci.c USB: xhci: fix U1/U2 handling for hardware with XHCI_INTEL_HOST quirk set 2020-12-28 15:44:32 +01:00
xhci.h xhci: avoid DMA double fetch when reading event trb type. 2021-01-29 14:16:50 +01:00