linux-kernel - Re: [PATCH v2] video: exynos_dp: fix build warning due to uninitialized value

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Date:	Sun, 24 Jun 2012 21:00:12 +0000
From:	Florian Tobias Schandinat <FlorianSchandinat@....de>
To:	Jingoo Han <jg1.han@...sung.com>
CC:	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	'Olof Johansson' <olof@...om.net>
Subject: Re: [PATCH v2] video: exynos_dp: fix build warning due to uninitialized
 value

On 06/20/2012 01:25 AM, Jingoo Han wrote:
> This patch fixes build warning due to uninitialized value dereference.
> 
> drivers/video/exynos/exynos_dp_core.c: In function 'exynos_dp_set_link_train':
> drivers/video/exynos/exynos_dp_core.c:529:18: warning: 'reg' may be used uninitialized in this function [-Wuninitialized]
> drivers/video/exynos/exynos_dp_core.c:395:6: note: 'reg' was declared here
> 
> Signed-off-by: Olof Johansson <olof@...om.net>
> Signed-off-by: Jingoo Han <jg1.han@...sung.com>

Applied.


Thanks,

Florian Tobias Schandinat

> ---
>  drivers/video/exynos/exynos_dp_core.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c
> index a36b2d2..9db7b9f 100644
> --- a/drivers/video/exynos/exynos_dp_core.c
> +++ b/drivers/video/exynos/exynos_dp_core.c
> @@ -407,6 +407,9 @@ static unsigned int exynos_dp_get_lane_link_training(
>  	case 3:
>  		reg = exynos_dp_get_lane3_link_training(dp);
>  		break;
> +	default:
> +		WARN_ON(1);
> +		return 0;
>  	}
>  
>  	return reg;

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