Use DIV_ROUND_UP

From: Julia Lawall <julia@diku.dk>

The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.

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

// <smpl>
@haskernel@
@@


@depends on haskernel@
expression n,d;
@@

(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/linux/drivers/media/video/uvc/uvc_video.c b/linux/drivers/media/video/uvc/uvc_video.c
index 6854ac78a..03dc3a519 100644
--- a/linux/drivers/media/video/uvc/uvc_video.c
+++ b/linux/drivers/media/video/uvc/uvc_video.c
@@ -655,7 +655,7 @@ static int uvc_init_video_isoc(struct uvc_video_device *video,
 	if (size > UVC_MAX_FRAME_SIZE)
 		return -EINVAL;
 
-	npackets = (size + psize - 1) / psize;
+	npackets = DIV_ROUND_UP(size, psize);
 	if (npackets > UVC_MAX_ISO_PACKETS)
 		npackets = UVC_MAX_ISO_PACKETS;