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linux/drivers/usb/cdns3
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Pawel Laszczak b69ec50b3e usb: cdns3: fix race condition before setting doorbell 
For DEV_VER_V3 version there exist race condition between clearing
ep_sts.EP_STS_TRBERR and setting ep_cmd.EP_CMD_DRDY bit.
Setting EP_CMD_DRDY will be ignored by controller when
EP_STS_TRBERR is set. So, between these two instructions we have
a small time gap in which the EP_STSS_TRBERR can be set. In such case
the transfer will not start after setting doorbell.

Fixes: 7733f6c32e ("usb: cdns3: Add Cadence USB3 DRD Driver")
cc: <stable@vger.kernel.org> # 5.12.x
Tested-by: Aswath Govindraju <a-govindraju@ti.com>
Reviewed-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Link: https://lore.kernel.org/r/20210907062619.34622-1-pawell@gli-login.cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-14 10:32:41 +02:00
..
cdns3-debug.h usb: cdns3: Change file names for cdns3 driver. 2020-12-29 12:36:13 +08:00
cdns3-ep0.c usb: cdns3: Fixed incorrect gadget state 2021-07-29 14:13:02 +08:00
cdns3-gadget.c usb: cdns3: fix race condition before setting doorbell 2021-09-14 10:32:41 +02:00
cdns3-gadget.h usb: cdns3: Optimize DMA request buffer allocation 2021-04-12 20:19:22 +08:00
cdns3-imx.c usb: cdns3: cdns3-imx: File headers are not good candidates for kernel-doc 2021-05-27 09:43:44 +02:00
cdns3-pci-wrap.c usb: cdns3: fix spelling mistake "wrapperr" -> "wrapper" 2020-03-19 15:14:48 +01:00
cdns3-plat.c usb: cdns3: cdns3-plat: Fix incorrect naming of function 'cdns3_plat_remove()' 2021-05-27 09:43:44 +02:00
cdns3-ti.c usb: cdns3: cdns3-ti: File headers are not good candidates for kernel-doc 2021-05-27 09:43:44 +02:00
cdns3-trace.c usb: cdns3: Change file names for cdns3 driver. 2020-12-29 12:36:13 +08:00
cdns3-trace.h usb: cdns3: trace: delete the trace parameter for request->trb 2021-04-12 20:19:21 +08:00
cdnsp-debug.h usb: cdnsp: Fixes for sparse warnings 2020-12-29 12:36:13 +08:00
cdnsp-ep0.c usb: cdnsp: Removes some useless trace events 2021-02-06 15:43:52 +08:00
cdnsp-gadget.c usb: cdnsp: Fix incorrect supported maximum speed 2021-07-29 14:13:02 +08:00
cdnsp-gadget.h usb: cdnsp: Fix the IMAN_IE_SET and IMAN_IE_CLEAR macro 2021-07-29 14:28:15 +08:00
cdnsp-mem.c usb: cdnsp: fix the wrong mult value for HS isoc or intr 2021-08-13 13:05:50 +02:00
cdnsp-pci.c usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver 2020-12-29 12:36:13 +08:00
cdnsp-ring.c usb: cdnsp: Fixed issue with ZLP 2021-07-29 14:13:02 +08:00
cdnsp-trace.c usb: cdnsp: Add tracepoints for CDNSP driver 2020-12-29 12:36:13 +08:00
cdnsp-trace.h treewide: Add missing semicolons to __assign_str uses 2021-06-30 09:19:14 -04:00
core.c usb: cdns3: core: Fix a couple of incorrectly documented function names 2021-05-27 09:43:44 +02:00
core.h usb: cdns3: Adds missing __iomem markers 2021-01-14 09:01:33 +08:00
drd.c usb: cdns3: add power lost support for system resume 2021-04-12 20:19:20 +08:00
drd.h usb: cdns3: add power lost support for system resume 2021-04-12 20:19:20 +08:00
gadget-export.h usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver 2020-12-29 12:36:13 +08:00
host-export.h usb: cdns3: Removes xhci_cdns3_suspend_quirk from host-export.h 2020-12-29 12:36:13 +08:00
host.c usb: cdns3: Removes xhci_cdns3_suspend_quirk from host-export.h 2020-12-29 12:36:13 +08:00
Kconfig usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver 2020-12-29 12:36:13 +08:00
Makefile usb: cdnsp: fixes undefined reference to cdns_remove 2021-01-14 09:02:00 +08:00