diff mbox series

[22/35] media: i2c: st-mipid02: Use the correct div function

Message ID 20240415-fix-cocci-v1-22-477afb23728b@chromium.org (mailing list archive)
State New, archived
Headers show
Series media: Fix coccinelle warning/errors | expand

Commit Message

Ricardo Ribalda April 15, 2024, 7:34 p.m. UTC 
link_freq does not fit in 32 bits.

Found by cocci:
drivers/media/i2c/st-mipid02.c:329:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_s64 instead.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
 drivers/media/i2c/st-mipid02.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Benjamin Mugnier April 17, 2024, 12:55 p.m. UTC | #1 
Hi Ricardo,

Thanks a lot.
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>

On 4/15/24 21:34, Ricardo Ribalda wrote:
> link_freq does not fit in 32 bits.
> 
> Found by cocci:
> drivers/media/i2c/st-mipid02.c:329:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_s64 instead.
> 
> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
> ---
>  drivers/media/i2c/st-mipid02.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/i2c/st-mipid02.c b/drivers/media/i2c/st-mipid02.c
> index f250640729ca..93a40bfda1af 100644
> --- a/drivers/media/i2c/st-mipid02.c
> +++ b/drivers/media/i2c/st-mipid02.c
> @@ -326,7 +326,7 @@ static int mipid02_configure_from_rx_speed(struct mipid02_dev *bridge,
>  	}
>  
>  	dev_dbg(&client->dev, "detect link_freq = %lld Hz", link_freq);
> -	do_div(ui_4, link_freq);
> +	ui_4 = div64_s64(ui_4, link_freq);
>  	bridge->r.clk_lane_reg1 |= ui_4 << 2;
>  
>  	return 0;
>
diff mbox series

Patch

diff --git a/drivers/media/i2c/st-mipid02.c b/drivers/media/i2c/st-mipid02.c
index f250640729ca..93a40bfda1af 100644
--- a/drivers/media/i2c/st-mipid02.c
+++ b/drivers/media/i2c/st-mipid02.c
@@ -326,7 +326,7 @@  static int mipid02_configure_from_rx_speed(struct mipid02_dev *bridge,
 	}
 
 	dev_dbg(&client->dev, "detect link_freq = %lld Hz", link_freq);
-	do_div(ui_4, link_freq);
+	ui_4 = div64_s64(ui_4, link_freq);
 	bridge->r.clk_lane_reg1 |= ui_4 << 2;
 
 	return 0;