powerpc/ps3: Use struct_size() in kzalloc()
Gustavo A. R. Silva
gustavo at embeddedor.com
Fri Jan 25 04:38:45 AEDT 2019
On 1/23/19 9:40 PM, Michael Ellerman wrote:
> On Tue, 2019-01-08 at 21:00:10 UTC, "Gustavo A. R. Silva" wrote:
>> 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 = kzalloc(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 = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);
>>
>> This code was detected with the help of Coccinelle.
>>
>> Signed-off-by: Gustavo A. R. Silva <gustavo at embeddedor.com>
>
> Applied to powerpc next, thanks.
>
> https://git.kernel.org/powerpc/c/31367b9a01d6a3f4f77694bd44f547d6
>
Thanks, Michael.
--
Gustavo
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