[media] s5p-tv: fix wait_event_timeout return handling
Author: Nicholas Mc Guire <hofrat@osadl.org>
event API conformance testing with coccinelle spatches are being
used to locate API usage inconsistencies this triggert with:
./drivers/media/platform/s5p-tv/mixer_reg.c:364
incorrect check for negative return
Return type of wait_event_timeout is signed long not int and the
return type is >=0 always thus the negative check is unnecessary.
An appropriately named variable of type long is inserted and the
call fixed up aswell as the negative return check dropped.
Signed-off-by: Nicholas Mc Guire
Signed-off-by: Sylwester Nawrocki
Signed-off-by: Mauro Carvalho Chehab
---
drivers/media/platform/s5p-tv/mixer_reg.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/s5p-tv/mixer_reg.c b/drivers/media/platform/s5p-tv/mixer_reg.c
index b713403..5127acb 100644
--- a/drivers/media/platform/s5p-tv/mixer_reg.c
+++ b/drivers/media/platform/s5p-tv/mixer_reg.c
@@ -357,17 +357,15 @@ void mxr_reg_streamoff(struct mxr_device *mdev)
int mxr_reg_wait4vsync(struct mxr_device *mdev)
{
- int ret;
+ long time_left;
clear_bit(MXR_EVENT_VSYNC, &mdev->event_flags);
/* TODO: consider adding interruptible */
- ret = wait_event_timeout(mdev->event_queue,
- test_bit(MXR_EVENT_VSYNC, &mdev->event_flags),
- msecs_to_jiffies(1000));
- if (ret > 0)
+ time_left = wait_event_timeout(mdev->event_queue,
+ test_bit(MXR_EVENT_VSYNC, &mdev->event_flags),
+ msecs_to_jiffies(1000));
+ if (time_left > 0)
return 0;
- if (ret < 0)
- return ret;
mxr_warn(mdev, "no vsync detected - timeout\n");
return -ETIME;
} |
---
drivers/media/platform/s5p-tv/mixer_reg.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/s5p-tv/mixer_reg.c b/drivers/media/platform/s5p-tv/mixer_reg.c
index b713403..5127acb 100644
--- a/drivers/media/platform/s5p-tv/mixer_reg.c
+++ b/drivers/media/platform/s5p-tv/mixer_reg.c
@@ -357,17 +357,15 @@ void mxr_reg_streamoff(struct mxr_device *mdev)
int mxr_reg_wait4vsync(struct mxr_device *mdev)
{
- int ret;
+ long time_left;
clear_bit(MXR_EVENT_VSYNC, &mdev->event_flags);
/* TODO: consider adding interruptible */
- ret = wait_event_timeout(mdev->event_queue,
- test_bit(MXR_EVENT_VSYNC, &mdev->event_flags),
- msecs_to_jiffies(1000));
- if (ret > 0)
+ time_left = wait_event_timeout(mdev->event_queue,
+ test_bit(MXR_EVENT_VSYNC, &mdev->event_flags),
+ msecs_to_jiffies(1000));
+ if (time_left > 0)
return 0;
- if (ret < 0)
- return ret;
mxr_warn(mdev, "no vsync detected - timeout\n");
return -ETIME;
}
