linux-kernel - Re: [PATCH] video: exynos: fix build warning and bad pointer deref in dp driver

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Message-ID: <CAOesGMiRs8DUTrykePU+SSqsBK52A4x=6M=xt0RLV+NCzDt9pg@mail.gmail.com>
Date:	Mon, 9 Apr 2012 07:07:15 -0700
From:	Olof Johansson <olof@...om.net>
To:	Jingoo Han <jg1.han@...sung.com>
Cc:	Florian Tobias Schandinat <FlorianSchandinat@....de>,
	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] video: exynos: fix build warning and bad pointer deref in
 dp driver

On Mon, Apr 9, 2012 at 2:25 AM, Jingoo Han <jg1.han@...sung.com> wrote:
>> -----Original Message-----
>> From: Olof Johansson [mailto:olof@...om.net]
>> Sent: Monday, April 09, 2012 1:16 PM
>>
>> I'm not 100% sure if the fix for 'adjust_request' is correct, since
>> it's uncertain what the original intent was. But it's so clearly an
>> uninitialized pointer dereference that my resolution seems to make sense.
>>
>> drivers/video/exynos/exynos_dp_core.c: In function 'exynos_dp_set_link_train':
>> drivers/video/exynos/exynos_dp_core.c:521:21: warning: 'adjust_request' may be used uninitialized in
>> this function [-Wuninitialized]
>> drivers/video/exynos/exynos_dp_core.c:481:6: note: 'adjust_request' was declared here
>> 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
>
> My compiler cannot detect this warning.
> What is your compiler version?

gcc version 4.6.2 (GCC)


-Olof
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