diff options
| author | Janusz Dziedzic <januszx.dziedzic@intel.com> | 2016-07-07 08:39:09 +0200 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-08-11 15:09:48 +0300 |
| commit | 79d17482a4091056e128a5048e253f2ed53440cc (patch) | |
| tree | ebe9df60de93d57ca5d6612befe91af7f82c96d1 | |
| parent | 207707d8fd48ebc977fb2b2794004a020e1ee08e (diff) | |
| download | op-kernel-dev-79d17482a4091056e128a5048e253f2ed53440cc.zip op-kernel-dev-79d17482a4091056e128a5048e253f2ed53440cc.tar.gz | |
usb: dwc3: don't set last bit for ISOC endpoints
According to Synopsys Databook 2.60a, section 8.3.4,
it's stated that:
The LST bit should be set to 0 (isochronous
transfers normally continue until the
endpoint is removed entirely, at which time
an End Transfer command is used to stop the
transfer).
This patch makes sure that detail is observed and
fixes a regression with Android Audio playback
caused by recent changes to DWC3 gadget.
Signed-off-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index eb820e4..7a4d4d2 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -829,7 +829,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, if (!req->request.no_interrupt && !chain) trb->ctrl |= DWC3_TRB_CTRL_IOC | DWC3_TRB_CTRL_ISP_IMI; - if (last) + if (last && !usb_endpoint_xfer_isoc(dep->endpoint.desc)) trb->ctrl |= DWC3_TRB_CTRL_LST; if (chain) |
