Commit ef711490 authored Sep 23, 2016 by Manu Gautam

usb: dwc3: Program event buffer post block reset on stop_host



dwc3-msm driver performs block reset on stop_host, but performs
event buffer initialization only on lpm_exit. If lpm enter/exit
doesn't happen for back to back stop_host -> start_peripheral
then event buffer may not be programmed when calling
dwc3_gadget_restart. This results in dwc3 device mode failure.
Add event buffer setting after block reset on stop_host and
before calling gadget_restart to match with POR sequence.

CRs-fixed: 1038350
Change-Id: I466828a4f47f0c147df6826b8d3967a64e0ab6d2
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>

parent d3e41c96

drivers/usb/dwc3/core.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -703,6 +703,7 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc)
		void dwc3_post_host_reset_core_init(struct dwc3 *dwc)
		{
		dwc3_core_init(dwc);
		dwc3_event_buffers_setup(dwc);
		dwc3_gadget_restart(dwc);
		dwc3_notify_event(dwc, DWC3_CONTROLLER_POST_INITIALIZATION_EVENT, 0);
		}