diff options
author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2019-01-30 18:27:44 -0600 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2019-02-01 15:12:29 -0800 |
commit | c49f0ce0b692e8018c32f529a718bb41bc934ab3 (patch) | |
tree | dacda6e90038bd08c3a5bbff6d34eb82cda99f7d /drivers | |
parent | 3ebb18a48cbf03448087f9eef08cbade84fc0118 (diff) | |
download | linux-c49f0ce0b692e8018c32f529a718bb41bc934ab3.tar.bz2 |
cxgb4: smt: use struct_size() in kvzalloc()
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[];
};
instance = kvzalloc(sizeof(struct foo) + count * sizeof(struct boo), GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can now
use the new struct_size() helper:
instance = kvzalloc(struct_size(instance, entry, count), GFP_KERNEL);
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/smt.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/smt.c b/drivers/net/ethernet/chelsio/cxgb4/smt.c index 7b2207a2a130..eaf1fb74689c 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/smt.c +++ b/drivers/net/ethernet/chelsio/cxgb4/smt.c @@ -47,8 +47,7 @@ struct smt_data *t4_init_smt(void) smt_size = SMT_SIZE; - s = kvzalloc(sizeof(*s) + smt_size * sizeof(struct smt_entry), - GFP_KERNEL); + s = kvzalloc(struct_size(s, smtab, smt_size), GFP_KERNEL); if (!s) return NULL; s->smt_size = smt_size; |