4.10-stable review patch. If anyone has any objections, please let me know.
------------------ From: Felipe Balbi <[email protected]> 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 <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/usb/dwc3/gadget.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1335,6 +1335,9 @@ int __dwc3_gadget_ep_set_halt(struct dwc 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 @@ -1356,6 +1359,8 @@ int __dwc3_gadget_ep_set_halt(struct dwc 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)
