diff options
| author | Julia Lawall <julia@diku.dk> | 2008-08-20 20:44:53 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-12 09:36:51 -0200 |
| commit | e9e24cee67bf71b929b646387f286e907cbde5fc (patch) | |
| tree | fd3be5482d9a17cd5df69ca8e0cd0ba5c0d4cb5c /drivers/media | |
| parent | 95908ece60443ceb188fccf021d62823de8e6f0c (diff) | |
V4L/DVB (8729): Use DIV_ROUND_UP
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@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/bw-qcam.c | 4 | ||||
| -rw-r--r-- | drivers/media/video/uvc/uvc_video.c | 2 | ||||
| -rw-r--r-- | drivers/media/video/zoran_device.c | 4 |
3 files changed, 5 insertions, 5 deletions
diff --git a/drivers/media/video/bw-qcam.c b/drivers/media/video/bw-qcam.c index 6e39e253ce5..01f07707827 100644 --- a/drivers/media/video/bw-qcam.c +++ b/drivers/media/video/bw-qcam.c @@ -495,7 +495,7 @@ static void qc_set(struct qcam_device *q) val2 = (((q->port_mode & QC_MODE_MASK) == QC_BIDIR) ? 24 : 8) * q->transfer_scale; } - val = (val + val2 - 1) / val2; + val = DIV_ROUND_UP(val, val2); qc_command(q, 0x13); qc_command(q, val); @@ -651,7 +651,7 @@ static long qc_capture(struct qcam_device * q, char __user *buf, unsigned long l transperline = q->width * q->bpp; divisor = (((q->port_mode & QC_MODE_MASK) == QC_BIDIR) ? 24 : 8) * q->transfer_scale; - transperline = (transperline + divisor - 1) / divisor; + transperline = DIV_ROUND_UP(transperline, divisor); for (i = 0, yield = yieldlines; i < linestotrans; i++) { diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 6854ac78a16..03dc3a519e4 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/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; diff --git a/drivers/media/video/zoran_device.c b/drivers/media/video/zoran_device.c index 88d369708e4..2b3ca149337 100644 --- a/drivers/media/video/zoran_device.c +++ b/drivers/media/video/zoran_device.c @@ -377,7 +377,7 @@ zr36057_set_vfe (struct zoran *zr, /* horizontal */ VidWinWid = video_width; - X = (VidWinWid * 64 + tvn->Wa - 1) / tvn->Wa; + X = DIV_ROUND_UP(VidWinWid * 64, tvn->Wa); We = (VidWinWid * 64) / X; HorDcm = 64 - X; hcrop1 = 2 * ((tvn->Wa - We) / 4); @@ -403,7 +403,7 @@ zr36057_set_vfe (struct zoran *zr, /* Vertical */ DispMode = !(video_height > BUZ_MAX_HEIGHT / 2); VidWinHt = DispMode ? video_height : video_height / 2; - Y = (VidWinHt * 64 * 2 + tvn->Ha - 1) / tvn->Ha; + Y = DIV_ROUND_UP(VidWinHt * 64 * 2, tvn->Ha); He = (VidWinHt * 64) / Y; VerDcm = 64 - Y; vcrop1 = (tvn->Ha / 2 - He) / 2; |