diff mbox series

[v7,4/5] media: venus: venc: Make the range of us_per_frame explicit

Message ID 20250616-test-v7-4-b8c0f98494fa@chromium.org
State New
Headers show
Series media: Fix coccinelle warning/errors | expand

Commit Message

Ricardo Ribalda June 16, 2025, 3:29 p.m. UTC 
Fps bigger than 0.000232829 fps, this fits in a 32 bit us_per_frame.
There is no need to do a 64 bit division here.

Also, the driver only works with whole fps.

Found with cocci:
drivers/media/platform/qcom/venus/venc.c:418:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_u64 instead.

Reviewed-by: Vikash Garodia <quic_vgarodia@quicinc.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
 drivers/media/platform/qcom/venus/venc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 4979392aa20b6dc94895c7089878531b92b57754..13395aaf06bbb1f381d809c18be61c5d6da85723 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -412,8 +412,7 @@  static int venc_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
 	do_div(us_per_frame, timeperframe->denominator);
 
 	us_per_frame = clamp(us_per_frame, 1, USEC_PER_SEC);
-	fps = (u64)USEC_PER_SEC;
-	do_div(fps, us_per_frame);
+	fps = USEC_PER_SEC / (u32)us_per_frame;
 	fps = min(VENUS_MAX_FPS, fps);
 
 	inst->fps = fps;