diff options
| author | Konrad Leszczynski <konrad.leszczynski@intel.com> | 2016-02-08 16:13:12 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-20 18:09:16 +0200 |
| commit | 558b4adac08dc14106af03b87216723f1f98d08c (patch) | |
| tree | 6886ccd412075a31b911b379550491cfa279a6d6 /drivers/usb/dwc3/gadget.c | |
| parent | 09796e2cfa937e7c8a0c8f87cdae21a7168477c8 (diff) | |
usb: dwc3: fix for the isoc transfer EP_BUSY flag
commit 9cad39fe4e4a4fe95d8ea5a7b0692b0a6e89e38b upstream.
commit f3af36511e60 ("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: f3af36511e60 ("usb: dwc3: gadget: always enable IOC
on bulk/interrupt transfers")
Signed-off-by: Konrad Leszczynski <konrad.leszczynski@intel.com>
Signed-off-by: Rafal Redzimski <rafal.f.redzimski@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 69ffe6e8d77f..70900e6ca9bc 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1965,6 +1965,10 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, 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; } |