[PATCH][next] dmaengine: stm32-mdma: Use struct_size() helper in devm_kzalloc()

[Kees Cook]

On Wed, Sep 29, 2021 at 05:29:22PM -0500, Gustavo A. R. Silva wrote:
> Make use of the struct_size() helper instead of an open-coded version,
> in order to avoid any potential type mistakes or integer overflows that,
> in the worse scenario, could lead to heap overflows.
> 
> Link: https://github.com/KSPP/linux/issues/160
> Signed-off-by: Gustavo A. R. Silva <gustavoars at kernel.org>

Looks right to me.

Reviewed-by: Kees Cook <keescook at chromium.org>

-- 
Kees Cook