Re: [PATCH 1/1] [media] exynos4-is: Fix potential null pointer dereferencing

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Hi Sylwester,

On 17 April 2013 16:33, Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> wrote:
> Hi Sachin,
>
> On 04/16/2013 08:16 AM, Sachin Kamat wrote:
>> Hi Sylwester,
>>
>> On 15 April 2013 20:51, Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> wrote:
>>
>>>> -     if (!fimc->drv_data || fimc->id >= fimc->drv_data->num_entities ||
>>>> -         fimc->id < 0) {
>>>> -             dev_err(dev, "Invalid driver data or device id (%d/%d)\n",
>>>> -                     fimc->id, fimc->drv_data->num_entities);
>>>> +     if (!fimc->drv_data || fimc->id >= fimc->drv_data->num_entities) {
>>>> +             dev_err(dev, "Invalid driver data or device id (%d)\n",
>>>> +                     fimc->id);
>>>>               return -EINVAL;
>>>
>>> Thanks for the patch. To make it more explicit I would prefer to change
>>> id type to 'int', and to leave the check for negative value. There is
>>> a similar issue in fimc-lite.c that could be addressed in same patch.
>>> Could you also fix this and resend ?
>>
>> Sure.
>> I also found a few more things to fix and sent a 5 patch fix series
>> including the above changes.
>
> Thanks a lot for your review and patches. I'll apply patches 1..2/5 for
> 3.10-rc, and patch 3/5 for 3.11.

OK. No problem.

>
> Regarding patch 4/5, as can be seen I didn't test the driver as a module
> before pushing upstream, my bad! :( So I had a look at it and found a few
> more issues. _Almost_ everything is fine now :-) after I fixed those,
> I'm going to post related patch set soon. Your patch 4/5 is not applicable
> any more unfortunately.

Not a problem as long as the issue is handled or fixed :).

>
> Regarding patch 5/5, I would prefer to keep that code, if you and others
> don't mind. Sorry, I'm a bit tied to it ;) Seriously, I hope to have more
> V4L2 controls supported for 3.11, so removing and re-adding that chunks
> would be a useless churn IMHO.

Right. That is the reason I kept this patch at the end of the series
so that you may decide as appropriate.

-- 
With warm regards,
Sachin
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