USB: output an error message when the pipe type doesn't match the endpoint type

Commit f661c6f8c67bd55e93348f160d590ff9edf08904 adds a check of the pipe type if
CONFIG_USB_DEBUG is enabled, but it doesn't output anything if this scenario
occurs.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 419e6b34e2fe..c14fc082864f 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -401,8 +401,11 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
         };
 
         /* Check that the pipe's type matches the endpoint's type */
-        if (usb_pipetype(urb->pipe) != pipetypes[xfertype])
+        if (usb_pipetype(urb->pipe) != pipetypes[xfertype]) {
+                dev_err(&dev->dev, "BOGUS urb xfer, pipe %x != type %x\n",
+                        usb_pipetype(urb->pipe), pipetypes[xfertype]);
                 return -EPIPE;          /* The most suitable error code :-) */
+        }
 
         /* enforce simple/standard policy */
         allowed = (URB_NO_TRANSFER_DMA_MAP | URB_NO_INTERRUPT | URB_DIR_MASK |