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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: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman 2017-09-18 17:39:13 +03:00 committed by Greg Kroah-Hartman
parent 9821786d7c
commit 5a838a13c9
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/xhci.h
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@ -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;