Re: [PATCH] media: atomisp: Move a variable assignment behind a null pointer check in atomisp_cp_general_isp_parameters()

From: Andy Shevchenko
Date: Fri Apr 14 2023 - 13:13:33 EST


On Thu, Apr 13, 2023 at 10:20:15PM +0200, Markus Elfring wrote:
> Date: Thu, 13 Apr 2023 22:08:42 +0200
>
> The address of a data structure member was determined before
> a corresponding null pointer check in the implementation of
> the function “atomisp_cp_general_isp_parameters”.
>
> Thus avoid the risk for undefined behaviour by moving the assignment
> for the variable “cur_config” behind the null pointer check.

I don't think this is what is happening here. The check might be removed by
optimizer in the compiler.

> This issue was detected by using the Coccinelle software.
>
> Fixes: ad85094b293e40e7a2f831b0311a389d952ebd5e ("Revert 'media: staging: atomisp: Remove driver'")

Wrong tag format.

Code-wise I'm not against this, but it's up to Hans.

--
With Best Regards,
Andy Shevchenko