linux-kernel - Re: [PATCH] gpu: drm: radeon: r600_cp.c: Cleaning up uninitialized variables

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Date:	Mon, 2 Jun 2014 18:47:23 +0200
From:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To:	Christian König <deathsimple@...afone.de>
Cc:	Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] gpu: drm: radeon: r600_cp.c: Cleaning up uninitialized variables

Hi

Thanks for your response!

No, it does not sound like it's worth changing anything.
Although in the worst case with this patch you probably have a more
consistent error :)



Best regards
Rickard Strandqvist


2014-06-02 9:48 GMT+02:00 Christian König <deathsimple@...afone.de>:
> Am 01.06.2014 01:10, schrieb Rickard Strandqvist:
>
>> There is a risk that the variable will be used without being initialized.
>>
>> This was largely found by using a static code analysis program called
>> cppcheck.
>>
>> Signed-off-by: Rickard Strandqvist
>> <rickard_strandqvist@...ctrumdigital.se>
>
>
> On the one hand it looks like a valid fix to me, but on the other hand the
> r600_cp.c code is deprecated for something like five years now.
>
> I would like to avoid touching it in any way and just let it rest peacefully
> until we can remove it entirely.
>
> Christian.
>
>
>> ---
>>   drivers/gpu/drm/radeon/r600_cp.c |    2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/radeon/r600_cp.c
>> b/drivers/gpu/drm/radeon/r600_cp.c
>> index 8c9b7e2..0770ad6 100644
>> --- a/drivers/gpu/drm/radeon/r600_cp.c
>> +++ b/drivers/gpu/drm/radeon/r600_cp.c
>> @@ -2615,7 +2615,7 @@ int r600_cs_legacy_ioctl(struct drm_device *dev,
>> void *data, struct drm_file *fp
>>         struct drm_radeon_cs *cs = data;
>>         struct drm_buf *buf;
>>         unsigned family;
>> -       int l, r = 0;
>> +       int l = 0, r = 0;
>>         u32 *ib, cs_id = 0;
>>         if (dev_priv == NULL) {
>
>
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