USB: xhci: No GFP_KERNEL in block error handling

xhci_add_endpoint() is used in the reset path. It must
use GFP_NOIO to avoid a possible deadlock.

Signed-off-by: Oliver Neukum <oliver@neukum.org>
Acked-by: Sarah Sharp <sarah.a.sharp@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c
index c8573f8..4cb69e0 100644 (file)
--- a/drivers/usb/host/xhci-hcd.c
+++ b/drivers/usb/host/xhci-hcd.c
@@ -1007,7 +1007,7 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
         * for usb_set_interface() and usb_set_configuration() claim).
         */
        if (xhci_endpoint_init(xhci, xhci->devs[udev->slot_id],
-                               udev, ep, GFP_KERNEL) < 0) {
+                               udev, ep, GFP_NOIO) < 0) {
                dev_dbg(&udev->dev, "%s - could not initialize ep %#x\n",
                                __func__, ep->desc.bEndpointAddress);
                return -ENOMEM;