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Commit 5a838a13 authored by Mathias Nyman's avatar Mathias Nyman Committed by Greg Kroah-Hartman
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xhci: fix finding correct bus_state structure for USB 3.1 hosts 



xhci driver keeps a bus_state structure for each hcd (usb2 and usb3)

The structure is picked based on hcd speed, but driver only compared
for HCD_USB3 speed, returning the wrong bus_state for HCD_USB31 hosts.

This caused null pointer dereference errors in bus_resume function.

Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9821786d

drivers/usb/host/xhci.h

+1 −1
Original line number Diff line number Diff line
@@ -1681,7 +1681,7 @@ struct xhci_bus_state { 


static inline unsigned int hcd_index(struct usb_hcd *hcd)

{

	if (hcd->speed == HCD_USB3)

	if (hcd->speed >= HCD_USB3)

		return 0;

	else

		return 1;