[PATCH] drm/msm/dp: fix error check return value of irq_of_parse_and_map()

[Dmitry Baryshkov]

On Fri, 22 Apr 2022 at 11:50, <cgel.zte at gmail.com> wrote:
>
> From: Lv Ruyi <lv.ruyi at zte.com.cn>
>
> The irq_of_parse_and_map() function returns 0 on failure, and does not
> return an negative value.
>
> Fixes:  8ede2ecc3e5e ("drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets")
> Reported-by: Zeal Robot <zealci at zte.com.cn>
> Signed-off-by: Lv Ruyi <lv.ruyi at zte.com.cn>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>

> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index a42732b67349..3926d2ac107d 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -1239,7 +1239,7 @@ int dp_display_request_irq(struct msm_dp *dp_display)
>         dp = container_of(dp_display, struct dp_display_private, dp_display);
>
>         dp->irq = irq_of_parse_and_map(dp->pdev->dev.of_node, 0);
> -       if (dp->irq < 0) {
> +       if (!dp->irq) {
>                 rc = dp->irq;
>                 DRM_ERROR("failed to get irq: %d\n", rc);
>                 return rc;
> --
> 2.25.1
>


-- 
With best wishes
Dmitry