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Commit a7a5307e authored by Lei wang's avatar Lei wang Committed by Gerrit - the friendly Code Review server
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xhci: plat: Fix xhci_plat shutdown hung 



xhci-plat Shutdown callback should check HCD_FLAG_HW_ACCESSIBLE
before accessing any register. This should avoid hung with access
controllers which support runtime suspend

Change-Id: I53eedf5b8f77dfdfa31d21b303da7058c5a86ba9
Signed-off-by: default avatarLei wang <leiwan@codeaurora.org>
parent 34594476

drivers/usb/host/xhci.c

+4 −0
Original line number Diff line number Diff line
@@ -763,6 +763,10 @@ void xhci_shutdown(struct usb_hcd *hcd) 
		usb_disable_xhci_ports(to_pci_dev(hcd->self.controller));



	spin_lock_irq(&xhci->lock);

	if (!HCD_HW_ACCESSIBLE(hcd)) {

		spin_unlock_irq(&xhci->lock);

		return;

	}

	xhci_halt(xhci);

	/* Workaround for spurious wakeups at shutdown with HSW */

	if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)