Re: [PATCH 4/5] drm/komeda: Fix IS_ERR() vs NULL check in komeda_component_get_avail_scaler()

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On Thu, Nov 10, 2022 at 05:44:44PM +0800, Gaosheng Cui wrote:
> The komeda_pipeline_get_state() returns an ERR_PTR() on failure, we should
> use IS_ERR() to check the return value.
> 
> Fixes: 502932a03fce ("drm/komeda: Add the initial scaler support for CORE")
> Signed-off-by: Gaosheng Cui <cuigaosheng1@xxxxxxxxxx>

Acked-by: Liviu Dudau <liviu.dudau@xxxxxxx>

Thanks for the fix!

Best regards,
Liviu

> ---
>  drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
> index 3276a3e82c62..e9c92439398d 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
> @@ -259,7 +259,7 @@ komeda_component_get_avail_scaler(struct komeda_component *c,
>  	u32 avail_scalers;
>  
>  	pipe_st = komeda_pipeline_get_state(c->pipeline, state);
> -	if (!pipe_st)
> +	if (IS_ERR(pipe_st))
>  		return NULL;
>  
>  	avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^
> -- 
> 2.25.1
> 

-- 
====================
| I would like to |
| fix the world,  |
| but they're not |
| giving me the   |
 \ source code!  /
  ---------------
    ¯\_(ツ)_/¯



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