Re: [PATCH v5 1/4] media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks

[Laurent Pinchart]

Hi Guoniu,

Thank you for the patch.

On Tue, Jul 28, 2026 at 02:58:56PM +0800, Guoniu Zhou wrote:
> Use BIT_ULL() instead of BIT() for u64 stream masks to avoid incorrect
> results on 32-bit architectures when stream IDs are 32 or greater.
> 
> Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver")
> Cc: stable@xxxxxxxxxxxxxxx

I'm not sure this deserves being backported, as streams IDs won't be
larger than 31 in normal use cases, but it doesn't hurt.

> Signed-off-by: Guoniu Zhou <guoniu.zhou@xxxxxxxxxxx>

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

> ---
>  drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
> index 9f0231ca47a3..9db9c6e55c2c 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
> @@ -157,10 +157,10 @@ mxc_isi_crossbar_xlate_streams(struct mxc_isi_crossbar *xbar,
>  	 */
>  	for_each_active_route(&state->routing, route) {
>  		if (route->source_pad != source_pad ||
> -		    !(source_streams & BIT(route->source_stream)))
> +		    !(source_streams & BIT_ULL(route->source_stream)))
>  			continue;
>  
> -		sink_streams |= BIT(route->sink_stream);
> +		sink_streams |= BIT_ULL(route->sink_stream);
>  		sink_pad = route->sink_pad;
>  	}
>  

-- 
Regards,

Laurent Pinchart