linux-kernel - Re: [Intel-gfx] [PATCH] i915: avoid unused-but-set-variable warning

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Date:   Thu, 22 Jun 2023 15:35:44 +0200
From:   Andi Shyti <andi.shyti@...ux.intel.com>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: Re: [Intel-gfx] [PATCH] i915: avoid unused-but-set-variable warning

Hi Arnd,

On Thu, Jun 22, 2023 at 12:18:41PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> The mchbar_addr variable is only used inside of an #ifdef:
> 
> drivers/gpu/drm/i915/soc/intel_gmch.c:41:6: error: variable 'mchbar_addr' set but not used [-Werror,-Wunused-but-set-variable]
> 
> Change this to an IS_ENABLED() check to let the compiler see how
> it's used and no longer warn about it.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

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

Thanks,
Andi