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 <hofrat@xxxxxxxxx>
---
Minor change of indentation to make checkpatch happy - not sure if
this is much more readable though.
Patch was compile tested with exynos_defconfig + CONFIG_MEDIA_SUPPORT=m,
CONFIG_MEDIA_CAMERA_SUPPORT=y, CONFIG_MEDIA_ANALOG_TV_SUPPORT=y,
CONFIG_V4L_PLATFORM_DRIVERS=y, CONFIG_VIDEO_SAMSUNG_S5P_TV=y,
CONFIG_VIDEO_SAMSUNG_S5P_MIXER=m
Patch is against 4.1-rc7 (localversion-next is -next-20150609)
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;
}
--
1.7.10.4
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