V4L/DVB (12483): Use DIV_ROUND_CLOSEST

The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

@depends on haskernel@
expression x,__divisor;
@@

- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/media/video/v4l1-compat.c b/drivers/media/video/v4l1-compat.c
index 02f2a6d..761fbd6 100644
--- a/drivers/media/video/v4l1-compat.c
+++ b/drivers/media/video/v4l1-compat.c
@@ -76,9 +76,8 @@ get_v4l_control(struct file             *file,
 			dprintk("VIDIOC_G_CTRL: %d\n", err);
 			return 0;
 		}
-		return ((ctrl2.value - qctrl2.minimum) * 65535
-			 + (qctrl2.maximum - qctrl2.minimum) / 2)
-			/ (qctrl2.maximum - qctrl2.minimum);
+		return DIV_ROUND_CLOSEST((ctrl2.value-qctrl2.minimum) * 65535,
+					 qctrl2.maximum - qctrl2.minimum);
 	}
 	return 0;
 }