diff options
| author | Konrad Leszczynski <konrad.leszczynski@intel.com> | 2016-02-08 16:13:12 +0100 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-08-22 12:22:59 -0400 |
| commit | c48db62d0cbae1e2a5b2f572130064c11ffec777 (patch) | |
| tree | d1768a5ea3e6cd14a5b34fe32369edef4904076e /drivers/usb/dwc3 | |
| parent | a5c2d04b6750191b5a4596e435d9d0c217e1f822 (diff) | |
| download | linux-rt-c48db62d0cbae1e2a5b2f572130064c11ffec777.tar.gz | |
usb: dwc3: fix for the isoc transfer EP_BUSY flag
[ Upstream commit 9cad39fe4e4a4fe95d8ea5a7b0692b0a6e89e38b ]
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")
Cc: <stable@vger.kernel.org>
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: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'drivers/usb/dwc3')
| -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 d4f7b607fc61..37da0e8bac33 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1931,6 +1931,10 @@ 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; } |