Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fcf8f576 authored by Sarah Sharp's avatar Sarah Sharp Committed by Greg Kroah-Hartman
Browse files

USB: xhci: Check if the host controller died in IRQ handler. 



Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent d3512f63

drivers/usb/host/xhci-hcd.c

+4 −0
Original line number Diff line number Diff line
@@ -277,6 +277,9 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) 
	/* Check if the xHC generated the interrupt, or the irq is shared */

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

	temp2 = xhci_readl(xhci, &xhci->ir_set->irq_pending);

	if (temp == 0xffffffff && temp2 == 0xffffffff)

		goto hw_died;



	if (!(temp & STS_EINT) && !ER_IRQ_PENDING(temp2)) {

		spin_unlock(&xhci->lock);

		return IRQ_NONE;
@@ -294,6 +297,7 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) 
	if (temp & STS_FATAL) {

		xhci_warn(xhci, "WARNING: Host System Error\n");

		xhci_halt(xhci);

hw_died:

		xhci_to_hcd(xhci)->state = HC_STATE_HALT;

		spin_unlock(&xhci->lock);

		return -ESHUTDOWN;