diff options
| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-01-19 13:38:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-12 06:41:48 +0100 |
| commit | 3ccf60e1ff5e6cbd47b860b95f6cb53ebd98113b (patch) | |
| tree | df145764aad453366efc2274fca624911d3e5527 /drivers | |
| parent | 5413f432a1f33293b9183fadb1b44e29b168aa24 (diff) | |
usb: dwc3: gadget: skip Set/Clear Halt when invalid
commit ffb80fc672c3a7b6afd0cefcb1524fb99917b2f3 upstream.
At least macOS seems to be sending
ClearFeature(ENDPOINT_HALT) to endpoints which
aren't Halted. This makes DWC3's CLEARSTALL command
time out which causes several issues for the driver.
Instead, let's just return 0 and bail out early.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index d2b860ebfe13..5dc6bfc91f4b 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1234,6 +1234,9 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol) unsigned transfer_in_flight; unsigned started; + if (dep->flags & DWC3_EP_STALL) + return 0; + if (dep->number > 1) trb = dwc3_ep_prev_trb(dep, dep->trb_enqueue); else @@ -1258,6 +1261,8 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol) else dep->flags |= DWC3_EP_STALL; } else { + if (!(dep->flags & DWC3_EP_STALL)) + return 0; ret = dwc3_send_clear_stall_ep_cmd(dep); if (ret) |