linux-kernel - Re: [Intel-gfx] [PATCH -next] drm/i915: remove unreachable code

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Message-ID: <ZHcRyNg1aGHJOBSB@ashyti-mobl2.lan>
Date:   Wed, 31 May 2023 11:22:16 +0200
From:   Andi Shyti <andi.shyti@...ux.intel.com>
To:     Yang Li <yang.lee@...ux.alibaba.com>
Cc:     airlied@...il.com, intel-gfx@...ts.freedesktop.org,
        Abaci Robot <abaci@...ux.alibaba.com>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        daniel@...ll.ch, rodrigo.vivi@...el.com,
        Ville Syrjala <ville.syrjala@...ux.intel.com>
Subject: Re: [Intel-gfx] [PATCH -next] drm/i915: remove unreachable code

Hi Yang,

On Wed, May 31, 2023 at 10:17:14AM +0800, Yang Li wrote:
> The code after the return will not be executed, so remove them.
> 
> Eliminate the following warning:
> drivers/gpu/drm/i915/display/intel_color.c:1808 intel_color_prepare_commit() warn: ignoring unreachable code.
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5342
> Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
> ---
>  drivers/gpu/drm/i915/display/intel_color.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
> index 8966e6560516..0bfebac1e3e2 100644
> --- a/drivers/gpu/drm/i915/display/intel_color.c
> +++ b/drivers/gpu/drm/i915/display/intel_color.c
> @@ -1804,11 +1804,6 @@ void intel_color_prepare_commit(struct intel_crtc_state *crtc_state)
>  
>  	/* FIXME DSB has issues loading LUTs, disable it for now */
>  	return;
> -
> -	if (!crtc_state->pre_csc_lut && !crtc_state->post_csc_lut)
> -		return;
> -
> -	crtc_state->dsb = intel_dsb_prepare(crtc, 1024);

yeah... it's an ugly bit, from my side:

Reviewed-by: Andi Shyti <andi.shyti@...ux.intel.com> 

but would be nice to hear from Ville who has added the return in
a first place.

Andi

>  }
>  
>  void intel_color_cleanup_commit(struct intel_crtc_state *crtc_state)
> -- 
> 2.20.1.7.g153144c