Re: [PATCH] drm/i915/gem: remove unused assignments

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On Mon, 20 Jun 2022, zys.zljxml@xxxxxxxxx wrote:
> From: katrinzhou <katrinzhou@xxxxxxxxxxx>
>
> The variable ret is reassigned and the value EINVAL is never used.
> Thus, remove the unused assignments.

It's obviously a bug, but it's not obvious just throwing the code away
is the fix. Maybe there's a missing "else" instead.

BR,
Jani.


>
> Addresses-Coverity: ("Unused value")
> Fixes: d4433c7600f7 ("drm/i915/gem: Use the proto-context to handle create parameters (v5)")
> Signed-off-by: katrinzhou <katrinzhou@xxxxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> index ab4c5ab28e4d..d5ef5243673a 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> @@ -931,8 +931,6 @@ static int set_proto_ctx_param(struct drm_i915_file_private *fpriv,
>  		break;
>  
>  	case I915_CONTEXT_PARAM_PERSISTENCE:
> -		if (args->size)
> -			ret = -EINVAL;
>  		ret = proto_context_set_persistence(fpriv->dev_priv, pc,
>  						    args->value);
>  		break;

-- 
Jani Nikula, Intel Open Source Graphics Center



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