linux-kernel - Re: [PATCH] drm/i915: remove redundant check on has_aliasing

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Date:   Tue, 10 Oct 2017 17:35:00 +0300
From:   Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
To:     Colin King <colin.king@...onical.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/i915: remove redundant check on has_aliasing_ppgtt

On Tue, 2017-10-10 at 14:47 +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> There is a previous check to on has_aliasing_ppgtt that returns
> 0 if it is false, so it is impossible for has_aliasing_ppgtt to
> be false on the final return of function intel_sanitize_enable_ppgtt,
> so final return in the function always will return 1.  Hence the
> redundant ternary operator can be replaced with a return 1.
> 
> Detected by CoverityScan, CID#1357136 ("Logically dead code")
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Thanks, I took it a few steps further and removed the variable
altogether. I Cc'd you on the patch.

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation