3.16.52-rc1 review patch. If anyone has any objections, please let me know.
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From: Mathias Nyman mathias.nyman@linux.intel.com
commit 5a838a13c9b4e5dd188b7a6eaeb894e9358ead0c upstream.
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.
Signed-off-by: Mathias Nyman mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Ben Hutchings ben@decadent.org.uk --- drivers/usb/host/xhci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1437,7 +1437,7 @@ 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;