tree c8f96f96581228413227d2ff51a372c063420289
parent 49e18b2ba887724ae43b1169ad0b8e747fd5aad9
author Thinh Nguyen <Thinh.Nguyen@synopsys.com> 1515809907 -0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1519809583 +0100

usb: dwc3: ep0: Reset TRB counter for ep0 IN

commit f035d139ffece7b6a7b8bfb17bd0ba715ee57a04 upstream.

DWC3 tracks TRB counter for each ep0 direction separately. In control
read transfer completion handler, the driver needs to reset the TRB
enqueue counter for ep0 IN direction. Currently the driver only resets
the TRB counter for control OUT endpoint. Check for the data direction
and properly reset the TRB counter from correct control endpoint.

Cc: stable@vger.kernel.org
Fixes: c2da2ff00606 ("usb: dwc3: ep0: don't use ep0in for transfers")
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>