[media] pwc: Replace memcpy with struct assignment
authorEzequiel Garcia <elezegarcia@gmail.com>
Tue, 23 Oct 2012 18:57:08 +0000 (15:57 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Thu, 27 Dec 2012 20:45:04 +0000 (18:45 -0200)
This kind of memcpy() is error-prone. Its replacement with a struct
assignment is prefered because it's type-safe and much easier to read.
Found by coccinelle. Hand patched and reviewed.
Tested by compilation only.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier struct_name;
struct struct_name to;
struct struct_name from;
expression E;
@@
-memcpy(&(to), &(from), E);
+to = from;
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/usb/pwc/pwc-if.c

index 21c15233c6ae1556384add1f5a994b98e4bf9c56..5ec15cb1ed2608aeb5e7a58f2f9d00e0e558be90 100644 (file)
@@ -1008,7 +1008,7 @@ static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id
        }
 
        /* Init video_device structure */
-       memcpy(&pdev->vdev, &pwc_template, sizeof(pwc_template));
+       pdev->vdev = pwc_template;
        strcpy(pdev->vdev.name, name);
        pdev->vdev.queue = &pdev->vb_queue;
        pdev->vdev.queue->lock = &pdev->vb_queue_lock;