Re: [PATCH 1/3] staging: media: tegra-video: Fix -Wmaybe-unitialized warn in gcc

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On Sat Mar 23, 2024 at 11:41 AM CET, Ricardo Ribalda wrote:
> Make sure that tegra20_vi_get_input_formats always assign a value for
> yuv_input_format.
>
> Fix:
> drivers/staging/media/tegra-video/tegra20.c:624:72: warning: ‘yuv_input_format’ may be used uninitialized [-Wmaybe-uninitialized]
>
> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
> ---
>  drivers/staging/media/tegra-video/tegra20.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/staging/media/tegra-video/tegra20.c b/drivers/staging/media/tegra-video/tegra20.c
> index c25286772603c..c39b52d0e4447 100644
> --- a/drivers/staging/media/tegra-video/tegra20.c
> +++ b/drivers/staging/media/tegra-video/tegra20.c
> @@ -176,6 +176,7 @@ static void tegra20_vi_get_input_formats(struct tegra_vi_channel *chan,
>  		(*yuv_input_format) = VI_INPUT_YUV_INPUT_FORMAT_YUYV;
>  		break;
>  	case MEDIA_BUS_FMT_YVYU8_2X8:
> +	default:

This default seems rather arbitrary. Maybe we should follow the
tegra20_vi_get_output_formats() and default to UYVY? Also, maybe follow
the same scheme as that function (i.e. assign the default near the top
of the function rather than add a default case)?

Thierry

>  		(*yuv_input_format) = VI_INPUT_YUV_INPUT_FORMAT_YVYU;
>  		break;
>  	}

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