[media] v4l2: pass std by value to the write-only s_std ioctl

This ioctl is defined as IOW, so pass the argument by value instead of by
reference. I could have chosen to add const instead, but this is 1) easier
to handle in drivers and 2) consistent with the s_std subdev operation.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/pci/zoran/zoran_driver.c b/drivers/media/pci/zoran/zoran_driver.c
index 2e8f518..1168a84 100644
--- a/drivers/media/pci/zoran/zoran_driver.c
+++ b/drivers/media/pci/zoran/zoran_driver.c
@@ -2435,14 +2435,14 @@
 	return 0;
 }
 
-static int zoran_s_std(struct file *file, void *__fh, v4l2_std_id *std)
+static int zoran_s_std(struct file *file, void *__fh, v4l2_std_id std)
 {
 	struct zoran_fh *fh = __fh;
 	struct zoran *zr = fh->zr;
 	int res = 0;
 
 	mutex_lock(&zr->resource_lock);
-	res = zoran_set_norm(zr, *std);
+	res = zoran_set_norm(zr, std);
 	if (res)
 		goto sstd_unlock_and_return;