xhci: gracefully handle xhci_irq dead device

commit 948fa13504f80b9765d2b753691ab94c83a10341 upstream.

If the xHCI host controller has died (ie, device removed) or suffered
other serious fatal error (STS_FATAL), then xhci_irq should handle this
condition with IRQ_HANDLED instead of -ESHUTDOWN.

Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 05f04e7343eb84bb24cfe962b8b7b14c07a3ceba..07aafa50f45327edca77b823b0cdba41192a5bf2 100644 (file)
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2794,7 +2794,7 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd)
                xhci_halt(xhci);
 hw_died:
                spin_unlock(&xhci->lock);
-               return -ESHUTDOWN;
+               return IRQ_HANDLED;
        }
 
        /*