Commit 9cad39fe authored by Konrad Leszczynski's avatar Konrad Leszczynski Committed by Felipe Balbi

usb: dwc3: fix for the isoc transfer EP_BUSY flag

commit f3af3651 ("usb: dwc3: gadget: always
enable IOC on bulk/interrupt transfers") ended up
regressing Isochronous endpoints by clearing
DWC3_EP_BUSY flag too early, which resulted in
choppy audio playback over USB.

Fix that by partially reverting original commit and
making sure that we check for isochronous endpoints.

Fixes: f3af3651 ("usb: dwc3: gadget: always enable IOC
		on bulk/interrupt transfers")
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarKonrad Leszczynski <konrad.leszczynski@intel.com>
Signed-off-by: default avatarRafal Redzimski <rafal.f.redzimski@intel.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent ab2a92e7
...@@ -2058,6 +2058,10 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, ...@@ -2058,6 +2058,10 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
return 1; return 1;
} }
if (usb_endpoint_xfer_isoc(dep->endpoint.desc))
if ((event->status & DEPEVT_STATUS_IOC) &&
(trb->ctrl & DWC3_TRB_CTRL_IOC))
return 0;
return 1; return 1;
} }
......
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