[PATCH 3.19.y-ckt 046/146] xhci: gracefully handle xhci_irq dead device

From: Kamal Mostafa
Date: Wed Jun 17 2015 - 19:34:40 EST

3.19.8-ckt2 -stable review patch. If anyone has any objections, please let me know.


From: Joe Lawrence <joe.lawrence@xxxxxxxxxxx>

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: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
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 893cdf1..861a810 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2645,7 +2645,7 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd)
- return -ESHUTDOWN;
+ return IRQ_HANDLED;


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