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| author | Julia Lawall <julia@diku.dk> | 2008-04-16 16:13:15 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-04-24 14:09:40 -0300 |
| commit | 168c626cb8f85df17585af99e14403904641c7ac (patch) | |
| tree | b3b899a507b76afc2923d4f7d6c1ed995957a4fc /drivers/media/video/c-qcam.c | |
| parent | 9e05c0f0d84c25f7f576ebc22a9a3a2cf962cc58 (diff) | |
| download | blackbird-op-linux-168c626cb8f85df17585af99e14403904641c7ac.tar.gz blackbird-op-linux-168c626cb8f85df17585af99e14403904641c7ac.zip | |
V4L/DVB (7591): drivers/media/video: use time_before, time_before_eq, etc
The functions time_before, time_before_eq, time_after, and time_after_eq
are more robust for comparing jiffies against other values.
A simplified version of the semantic patch making this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@ change_compare_np @
expression E;
@@
(
- jiffies <= E
+ time_before_eq(jiffies,E)
|
- jiffies >= E
+ time_after_eq(jiffies,E)
|
- jiffies < E
+ time_before(jiffies,E)
|
- jiffies > E
+ time_after(jiffies,E)
)
@ include depends on change_compare_np @
@@
@ no_include depends on !include && change_compare_np @
@@
#include <linux/...>
+ #include <linux/jiffies.h>
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/c-qcam.c')
| -rw-r--r-- | drivers/media/video/c-qcam.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/media/video/c-qcam.c b/drivers/media/video/c-qcam.c index 2c85ced61150..fe1e67bb1ca8 100644 --- a/drivers/media/video/c-qcam.c +++ b/drivers/media/video/c-qcam.c @@ -36,6 +36,7 @@ #include <linux/videodev.h> #include <media/v4l2-common.h> #include <linux/mutex.h> +#include <linux/jiffies.h> #include <asm/uaccess.h> @@ -95,7 +96,8 @@ static unsigned int qcam_await_ready1(struct qcam_device *qcam, unsigned long oldjiffies = jiffies; unsigned int i; - for (oldjiffies = jiffies; (jiffies - oldjiffies) < msecs_to_jiffies(40); ) + for (oldjiffies = jiffies; + time_before(jiffies, oldjiffies + msecs_to_jiffies(40)); ) if (qcam_ready1(qcam) == value) return 0; @@ -120,7 +122,8 @@ static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value) unsigned long oldjiffies = jiffies; unsigned int i; - for (oldjiffies = jiffies; (jiffies - oldjiffies) < msecs_to_jiffies(40); ) + for (oldjiffies = jiffies; + time_before(jiffies, oldjiffies + msecs_to_jiffies(40)); ) if (qcam_ready2(qcam) == value) return 0; |
