[PATCH] mtd: rawnand: atmel: use struct_size() in devm_kzalloc()

Miquel Raynal miquel.raynal at bootlin.com
Tue Sep 4 14:58:16 PDT 2018


Hi Gustavo,

"Gustavo A. R. Silva" <gustavo at embeddedor.com> wrote on Thu, 23 Aug
2018 20:09:38 -0500:

> One of the more common cases of allocation size calculations is finding
> the size of a structure that has a zero-sized array at the end, along
> with memory for some number of elements for that array. For example:
> 
> struct foo {
> 	int stuff;
>         void *entry[];
> };
> 
> instance = devm_kzalloc(dev, sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);
> 
> Instead of leaving these open-coded and prone to type mistakes, we can
> now use the new struct_size() helper:
> 
> instance = devm_kzalloc(dev, struct_size(instance, entry, count), GFP_KERNEL);
> 
> This issue was detected with the help of Coccinelle.
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo at embeddedor.com>
> ---

Applied to nand/next.

Thanks,
Miquèl



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