USB: Add a usb_pipe_endpoint() convenience function

Converting a pipe number to a struct usb_host_endpoint pointer is a little
messy.  Introduce a new convenience function to hide the mess.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index a760e46871c5..7c0555548ac8 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -308,8 +308,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
          * will be required to set urb->ep directly and we will eliminate
          * urb->pipe.
          */
-        ep = (usb_pipein(urb->pipe) ? dev->ep_in : dev->ep_out)
-                        [usb_pipeendpoint(urb->pipe)];
+        ep = usb_pipe_endpoint(dev, urb->pipe);
         if (!ep)
                 return -ENOENT;