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Subject[PATCH 3.12 056/111] xhci: gracefully handle xhci_irq dead device
Date
From: Joe Lawrence <joe.lawrence@stratus.com>

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