From: Oliver Neukum <oli...@neukum.org> xhci_service_interval_to_ns() returns long long to avoid an overflow. However, the type cast happens too late. The fix is to force ULL from the beginning.
This patch should be backported to kernels as old as 3.5, that contain the commit e3567d2c15a7a8e2f992a5f7c7683453ca406d82 "xhci: Add Intel U1/U2 timeout policy." Signed-off-by: Oliver Neukum <oneu...@suse.de> Signed-off-by: Sarah Sharp <sarah.a.sh...@linux.intel.com> CC: sta...@vger.kernel.org --- drivers/usb/host/xhci.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 8d3c454..9ec9396 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -4021,7 +4021,7 @@ int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) static unsigned long long xhci_service_interval_to_ns( struct usb_endpoint_descriptor *desc) { - return (1 << (desc->bInterval - 1)) * 125 * 1000; + return (1ULL << (desc->bInterval - 1)) * 125 * 1000; } static u16 xhci_get_timeout_no_hub_lpm(struct usb_device *udev, -- 1.7.9 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html