USB: add URB_FREE_BUFFER to permissible flags

URB_FREE_BUFFER needs to be allowed in the sanity checks to use drivers that
use that flag.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index c20c03aaf01283bba746523ad5724f6e00a298d2..d05ead20081c6cdb2ae9ce6c16be8a99c2862bfc 100644 (file)
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -372,7 +372,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
 
        /* enforce simple/standard policy */
        allowed = (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP |
-                       URB_NO_INTERRUPT | URB_DIR_MASK);
+                       URB_NO_INTERRUPT | URB_DIR_MASK | URB_FREE_BUFFER);
        switch (xfertype) {
        case USB_ENDPOINT_XFER_BULK:
                if (is_out)