Commit 9abb6987 authored Oct 17, 2014 by Azhar Shaikh

usb: dwc3-msm: Cancel block reset work before turning OFF clocks in suspend



If block reset is in progress and there is a suspend triggered
then suspend will turn off the clocks and this will result in an
unclocked regsiter access during block reset.
Hence to avoid this cancel the block reset work and wait for it to
finish in suspend before turning OFF the clocks.

CRs-fixed: 741254
Change-Id: I0977ec7c5e03e7fa29e382fcc0bdf083cc12cec8
Signed-off-by: Azhar Shaikh <azhars@codeaurora.org>

parent c8c517c0

drivers/usb/dwc3/dwc3-msm.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1663,6 +1663,10 @@ static int dwc3_msm_suspend(struct dwc3_msm *mdwc)
		atomic_set(&dwc->in_lpm, 1);

		usb_phy_set_suspend(mdwc->hs_phy, 1);

		/* Cancel block reset work and wait for it to finish */
		cancel_work_sync(&mdwc->usb_block_reset_work);

		if (can_suspend_ssphy) {
		usb_phy_set_suspend(mdwc->ss_phy, 1);
		usleep_range(1000, 1200);