Re: [PATCH v2 2/2] drm/msm/dsi: fix 32-bit signed integer extension in pclk_rate calculation

[Dmitry Baryshkov]

On Mon, Oct 07, 2024 at 01:01:49AM GMT, Jonathan Marek wrote:
> When (mode->clock * 1000) is larger than (1<<31), int to unsigned long
> conversion will sign extend the int to 64 bits and the pclk_rate value
> will be incorrect.
> 
> Fix this by making the result of the multiplication unsigned.
> 
> Note that above (1<<32) would still be broken and require more changes, but
> its unlikely anyone will need that anytime soon.
> 
> Fixes: c4d8cfe516dc ("drm/msm/dsi: add implementation for helper functions")
> Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx>
> ---
>  drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

-- 
With best wishes
Dmitry