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Commit e4ab05df authored by Sarah Sharp's avatar Sarah Sharp Committed by Greg Kroah-Hartman
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USB: xhci: Stop debugging polling loop when HC dies. 



If the host controller card is removed from the system, stop the timer
function to debug the xHCI rings.

Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 35f76e89

drivers/usb/host/xhci-hcd.c

+6 −0
Original line number Diff line number Diff line
@@ -335,6 +335,12 @@ void xhci_event_ring_work(unsigned long arg) 
	spin_lock_irqsave(&xhci->lock, flags);

	temp = xhci_readl(xhci, &xhci->op_regs->status);

	xhci_dbg(xhci, "op reg status = 0x%x\n", temp);

	if (temp == 0xffffffff) {

		xhci_dbg(xhci, "HW died, polling stopped.\n");

		spin_unlock_irqrestore(&xhci->lock, flags);

		return;

	}



	temp = xhci_readl(xhci, &xhci->ir_set->irq_pending);

	xhci_dbg(xhci, "ir_set 0 pending = 0x%x\n", temp);

	xhci_dbg(xhci, "No-op commands handled = %d\n", xhci->noops_handled);