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Commit 8a5cba8b authored by Mayank Rana's avatar Mayank Rana
Browse files

dwc3-msm: Flush sm_work with dwc3_restart_usb_host_mode() API 



There is race seen between USB stop host mode and USB start host
mode when Linux DP driver calls usbpd_release_ss_lane() API for
4 lane DP functionality. This results into trying to delete xhci
platform device before it has been added causing multiple crashes.
Fix this issue by flushing sm_work before trying to stop host mode
functionality.

Change-Id: Ifbc888ecd87836d29c93b0c402613743b19982ea
Signed-off-by: default avatarMayank Rana <mrana@codeaurora.org>
parent 8e96f4f7

drivers/usb/dwc3/dwc3-msm.c

+2 −0
Original line number Diff line number Diff line
@@ -3897,6 +3897,8 @@ static int dwc3_restart_usb_host_mode(struct notifier_block *nb, 
	if (dwc->maximum_speed == usb_speed)

		goto err;



	dbg_event(0xFF, "fw_restarthost", 0);

	flush_delayed_work(&mdwc->sm_work);

	dbg_event(0xFF, "stop_host_mode", dwc->maximum_speed);

	ret = dwc3_otg_start_host(mdwc, 0);

	if (ret)