linux-kernel - Re: [PATCH] drm: sun4i: Fix a uninitialized variable warning.

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Date:   Wed, 19 Sep 2018 10:47:19 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     zhong jiang <zhongjiang@...wei.com>
Cc:     airlied@...ux.ie, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: sun4i: Fix a uninitialized variable warning.

On Tue, Sep 18, 2018 at 03:25:20PM +0800, zhong jiang wrote:
> Fix the following compile warning:
> 
> drivers/gpu/drm/sun4i/sun4i_tcon.c:1088: warning: 'has_lvds_alt' may be used uninitialized in this function [-Wmaybe-uninitialized]
> bool has_lvds_rst, has_lvds_alt, can_lvds;
> 
> Signed-off-by: zhong jiang <zhongjiang@...wei.com>

I can't see any code path that would lead to an uninitialized usage of
that variable.

Which compiler produced that warning? I tried building it today with
gcc 8.1.1, and I don't see that warning either.

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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