diff options
| author | Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2021-10-26 02:21:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-17 17:01:45 +0300 |
| commit | d74dc3e9f58c28689cef1faccf918e06587367d3 (patch) | |
| tree | 00c5285c90653842546ca0663e6b555fab0c7f64 /drivers/usb | |
| parent | 250fdabec6ffcaf895c5e0dedca62706ef10d8f6 (diff) | |
| download | linux-d74dc3e9f58c28689cef1faccf918e06587367d3.tar.xz | |
usb: dwc3: gadget: Ignore NoStream after End Transfer
The End Transfer command from a stream endpoint will generate a NoStream
event, and we should ignore it. Currently we set the flag
DWC3_EP_IGNORE_NEXT_NOSTREAM to track this prior to sending the command,
and it will be cleared on the next stream event. However, a stream event
may be generated before the End Transfer command completion and
prematurely clear the flag. Fix this by setting the flag on End Transfer
completion instead.
Fixes: 140ca4cfea8a ("usb: dwc3: gadget: Handle stream transfers")
Cc: <stable@vger.kernel.org>
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/cee1253af4c3600edb878d11c9c08b040817ae23.1635203975.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 23de2a5a40d6..3d6f4adaa15a 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -3352,6 +3352,14 @@ static void dwc3_gadget_endpoint_command_complete(struct dwc3_ep *dep, if (cmd != DWC3_DEPCMD_ENDTRANSFER) return; + /* + * The END_TRANSFER command will cause the controller to generate a + * NoStream Event, and it's not due to the host DP NoStream rejection. + * Ignore the next NoStream event. + */ + if (dep->stream_capable) + dep->flags |= DWC3_EP_IGNORE_NEXT_NOSTREAM; + dep->flags &= ~DWC3_EP_END_TRANSFER_PENDING; dep->flags &= ~DWC3_EP_TRANSFER_STARTED; dwc3_gadget_ep_cleanup_cancelled_requests(dep); @@ -3574,14 +3582,6 @@ static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force, WARN_ON_ONCE(ret); dep->resource_index = 0; - /* - * The END_TRANSFER command will cause the controller to generate a - * NoStream Event, and it's not due to the host DP NoStream rejection. - * Ignore the next NoStream event. - */ - if (dep->stream_capable) - dep->flags |= DWC3_EP_IGNORE_NEXT_NOSTREAM; - if (!interrupt) dep->flags &= ~DWC3_EP_TRANSFER_STARTED; else |