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taprio: Use struct_size() in kzalloc()

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Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes. Also, remove unnecessary
variable _size_.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gustavo A. R. Silva 2020-06-18 09:46:48 -05:00 committed by David S. Miller
parent 1075a4744a
commit 11a33de2df
1 changed files with 2 additions and 3 deletions
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5
net/sched/sch_taprio.c
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@ -1108,11 +1108,10 @@ static void setup_txtime(struct taprio_sched *q,
static struct tc_taprio_qopt_offload *taprio_offload_alloc(int num_entries)
{
size_t size = sizeof(struct tc_taprio_sched_entry) * num_entries +
sizeof(struct __tc_taprio_qopt_offload);
struct __tc_taprio_qopt_offload *__offload;
__offload = kzalloc(size, GFP_KERNEL);
__offload = kzalloc(struct_size(__offload, offload.entries, num_entries),
GFP_KERNEL);
if (!__offload)
return NULL;