diff mbox series

[21/35] media: venus: Use div64_u64

Message ID 20240415-fix-cocci-v1-21-477afb23728b@chromium.org (mailing list archive)
State Superseded
Headers show
Series media: Fix coccinelle warning/errors | expand

Commit Message

Ricardo Ribalda April 15, 2024, 7:34 p.m. UTC 
us_per_frame does not fit in 32 bits. Use the appropriate div function.

Found by cocci:
drivers/media/platform/qcom/venus/vdec.c:488:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_u64 instead.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
 drivers/media/platform/qcom/venus/vdec.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

Comments

Dan Carpenter April 16, 2024, 7:57 a.m. UTC | #1 
On Mon, Apr 15, 2024 at 07:34:38PM +0000, Ricardo Ribalda wrote:
> us_per_frame does not fit in 32 bits. Use the appropriate div function.
> 

Really?  It's less than one frame per second?

regards,
dan carpenter
diff mbox series

Patch

diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index 29130a9441e7..1dffeb7de76e 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -464,7 +464,7 @@  static int vdec_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
 	struct venus_inst *inst = to_inst(file);
 	struct v4l2_captureparm *cap = &a->parm.capture;
 	struct v4l2_fract *timeperframe = &cap->timeperframe;
-	u64 us_per_frame, fps;
+	u64 us_per_frame;
 
 	if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
 	    a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
@@ -484,10 +484,7 @@  static int vdec_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
 	if (!us_per_frame)
 		return -EINVAL;
 
-	fps = (u64)USEC_PER_SEC;
-	do_div(fps, us_per_frame);
-
-	inst->fps = fps;
+	inst->fps = div64_u64(USEC_PER_SEC, us_per_frame);
 	inst->timeperframe = *timeperframe;
 
 	return 0;