usbfs: Add ep_to_host_endpoint helper function

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

1 files changed, 11 insertions, 7 deletions

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index d7571a63181d..502974b4deb5 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -769,6 +769,15 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype,
         return ret;
 }
 
+static struct usb_host_endpoint *ep_to_host_endpoint(struct usb_device *dev,
+                                                     unsigned char ep)
+{
+        if (ep & USB_ENDPOINT_DIR_MASK)
+                return dev->ep_in[ep & USB_ENDPOINT_NUMBER_MASK];
+        else
+                return dev->ep_out[ep & USB_ENDPOINT_NUMBER_MASK];
+}
+
 static int match_devt(struct device *dev, void *data)
 {
         return dev->devt == (dev_t) (unsigned long) data;
@@ -1230,15 +1239,10 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
                 if (ret)
                         return ret;
         }
-        if ((uurb->endpoint & USB_ENDPOINT_DIR_MASK) != 0) {
-                is_in = 1;
-                ep = ps->dev->ep_in[uurb->endpoint & USB_ENDPOINT_NUMBER_MASK];
-        } else {
-                is_in = 0;
-                ep = ps->dev->ep_out[uurb->endpoint & USB_ENDPOINT_NUMBER_MASK];
-        }
+        ep = ep_to_host_endpoint(ps->dev, uurb->endpoint);
         if (!ep)
                 return -ENOENT;
+        is_in = (uurb->endpoint & USB_ENDPOINT_DIR_MASK) != 0;
 
         u = 0;
         switch(uurb->type) {