Re: [PATCH] drm/i915/display: Convert i9xx_pipe_crc_auto_source to void

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On Sat, Jan 14, 2023 at 07:33:53PM +0530, Deepak R Varma wrote:
> Convert function i9xx_pipe_crc_auto_source() to return void instead
> of int since the current implementation always returns 0 to the caller.
> Issue identified using returnvar Coccinelle semantic patch.

could you please share the coccinelle commands and files you used here?

> 
> Signed-off-by: Deepak R Varma <drv@xxxxxxxxx>
> ---
> Please note: The change is compile tested only.

np, our CI liked it.

I liked the clean up as well:
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>

> 
> 
>  drivers/gpu/drm/i915/display/intel_pipe_crc.c | 23 ++++++-------------
>  1 file changed, 7 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.c b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
> index e9774670e3f6..8d3ea8d7b737 100644
> --- a/drivers/gpu/drm/i915/display/intel_pipe_crc.c
> +++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
> @@ -72,14 +72,13 @@ static int i8xx_pipe_crc_ctl_reg(enum intel_pipe_crc_source *source,
>  	return 0;
>  }
>  
> -static int i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
> -				     enum pipe pipe,
> -				     enum intel_pipe_crc_source *source)
> +static void i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
> +				      enum pipe pipe,
> +				      enum intel_pipe_crc_source *source)
>  {
>  	struct intel_encoder *encoder;
>  	struct intel_crtc *crtc;
>  	struct intel_digital_port *dig_port;
> -	int ret = 0;
>  
>  	*source = INTEL_PIPE_CRC_SOURCE_PIPE;
>  
> @@ -121,8 +120,6 @@ static int i9xx_pipe_crc_auto_source(struct drm_i915_private *dev_priv,
>  		}
>  	}
>  	drm_modeset_unlock_all(&dev_priv->drm);
> -
> -	return ret;
>  }
>  
>  static int vlv_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
> @@ -132,11 +129,8 @@ static int vlv_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
>  {
>  	bool need_stable_symbols = false;
>  
> -	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
> -		int ret = i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
> -		if (ret)
> -			return ret;
> -	}
> +	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
> +		i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
>  
>  	switch (*source) {
>  	case INTEL_PIPE_CRC_SOURCE_PIPE:
> @@ -200,11 +194,8 @@ static int i9xx_pipe_crc_ctl_reg(struct drm_i915_private *dev_priv,
>  				 enum intel_pipe_crc_source *source,
>  				 u32 *val)
>  {
> -	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO) {
> -		int ret = i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
> -		if (ret)
> -			return ret;
> -	}
> +	if (*source == INTEL_PIPE_CRC_SOURCE_AUTO)
> +		i9xx_pipe_crc_auto_source(dev_priv, pipe, source);
>  
>  	switch (*source) {
>  	case INTEL_PIPE_CRC_SOURCE_PIPE:
> -- 
> 2.34.1
> 
> 
> 



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