> 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[];
> };
...
> Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
> ---
> drivers/net/wireless/quantenna/qtnfmac/commands.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c b/drivers/net/wireless/quantenna/qtnfmac/commands.c
> index 659e7649fe22..cf386f579060 100644
> --- a/drivers/net/wireless/quantenna/qtnfmac/commands.c
> +++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c
> @@ -914,9 +914,8 @@ qtnf_cmd_resp_proc_hw_info(struct qtnf_bus *bus,
> if (WARN_ON(resp->n_reg_rules > NL80211_MAX_SUPP_REG_RULES))
> return -E2BIG;
>
> - hwinfo->rd = kzalloc(sizeof(*hwinfo->rd)
> - + sizeof(struct ieee80211_reg_rule)
> - * resp->n_reg_rules, GFP_KERNEL);
> + hwinfo->rd = kzalloc(struct_size(hwinfo->rd, reg_rules,
> + resp->n_reg_rules), GFP_KERNEL);
>
> if (!hwinfo->rd)
> return -ENOMEM;
Thanks!
Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@xxxxxxxxxxxxx>
Regards,
Sergey
