[PATCH 3.12 056/111] xhci: gracefully handle xhci_irq dead device

[Jiri Slaby]

From: Joe Lawrence <joe.lawrence@xxxxxxxxxxx>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

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@xxxxxxxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
 drivers/usb/host/xhci-ring.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 05f04e7343eb..07aafa50f453 100644
--- 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;
 	}
 
 	/*
-- 
2.4.2

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