[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>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c
index 7aea24bf3a37..4b9a256f506e 100644
--- a/drivers/media/pci/bt8xx/bttv-driver.c
+++ b/drivers/media/pci/bt8xx/bttv-driver.c
@@ -1713,7 +1713,7 @@ static void radio_enable(struct bttv *btv)
         }
 }
 
-static int bttv_s_std(struct file *file, void *priv, v4l2_std_id *id)
+static int bttv_s_std(struct file *file, void *priv, v4l2_std_id id)
 {
         struct bttv_fh *fh  = priv;
         struct bttv *btv = fh->btv;
@@ -1721,14 +1721,14 @@ static int bttv_s_std(struct file *file, void *priv, v4l2_std_id *id)
         int err = 0;
 
         for (i = 0; i < BTTV_TVNORMS; i++)
-                if (*id & bttv_tvnorms[i].v4l2_id)
+                if (id & bttv_tvnorms[i].v4l2_id)
                         break;
         if (i == BTTV_TVNORMS) {
                 err = -EINVAL;
                 goto err;
         }
 
-        btv->std = *id;
+        btv->std = id;
         set_tvnorm(btv, i);
 
 err: