Re: [PATCH][next] qtnfmac: replace qtnf_cmd_acl_data_size() with struct_size()

[Gustavo A. R. Silva]

On 4/4/19 8:32 AM, Sergey Matyukevich 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;
>>     struct boo entry[];
>> };
>>
>> size = sizeof(struct foo) + count * sizeof(struct boo);
>> instance = kzalloc(size, GFP_KERNEL)
>>
>> Instead of leaving these open-coded and prone to type mistakes, we can
>> now use the new struct_size() helper:
>>
>> size = struct_size(instance, entry, count);
>>
>> or
>>
>> instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL)
>>
>> Based on the above, replace qtnf_cmd_acl_data_size() with the
>> new struct_size() helper.
>>
>> This code was detected with the help of Coccinelle.
>>
>> Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
>> ---
>>  drivers/net/wireless/quantenna/qtnfmac/commands.c | 15 ++++-----------
>>  1 file changed, 4 insertions(+), 11 deletions(-)
> 
> Hi Gustavo,
> 

Hey Sergey,

> Thanks for the patch! By the way, it does not apply cleanly, so it needs
> to be rebased on top of the up-to-date wireless-drivers-next tree. Let
> me know if you would prefer me to care about rebase. Then I will
> add this patch to the upcoming series of qtnfmac fixes.
> 

Don't worry. I'll do it and send this again.

> Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@xxxxxxxxxxxxx>
> 

I'll add your RB.

Thanks!
--
Gustavo