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| author | Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2020-09-03 03:43:04 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@kernel.org> | 2020-09-24 10:56:01 +0200 |
| commit | d97c78a1908e59a1fdbcbece87cd0440b5d7a1f2 (patch) | |
| tree | b40473c2b1da41d86769218a671d5487cd92d41f /drivers/usb/dwc3/core.h | |
| parent | usb: dwc3: gadget: Resume pending requests after CLEAR_STALL (diff) | |
| download | linux-d97c78a1908e59a1fdbcbece87cd0440b5d7a1f2.tar.xz linux-d97c78a1908e59a1fdbcbece87cd0440b5d7a1f2.zip | |
usb: dwc3: gadget: END_TRANSFER before CLEAR_STALL command
According the programming guide (for all DWC3 IPs), when the driver
handles ClearFeature(halt) request, it should issue CLEAR_STALL command
_after_ the END_TRANSFER command completes. The END_TRANSFER command may
take some time to complete. So, delay the ClearFeature(halt) request
control status stage and wait for END_TRANSFER command completion
interrupt. Only after END_TRANSFER command completes that the driver
may issue CLEAR_STALL command.
Cc: stable@vger.kernel.org
Fixes: cb11ea56f37a ("usb: dwc3: gadget: Properly handle ClearFeature(halt)")
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers/usb/dwc3/core.h')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 2f04b3e42bf1..eb026c9cca28 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -706,6 +706,7 @@ struct dwc3_ep { #define DWC3_EP_IGNORE_NEXT_NOSTREAM BIT(8) #define DWC3_EP_FORCE_RESTART_STREAM BIT(9) #define DWC3_EP_FIRST_STREAM_PRIMED BIT(10) +#define DWC3_EP_PENDING_CLEAR_STALL BIT(11) /* This last one is specific to EP0 */ #define DWC3_EP0_DIR_IN BIT(31) |