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authorGustavo A. R. Silva <gustavo@embeddedor.com>2019-01-30 18:27:44 -0600
committerDavid S. Miller <davem@davemloft.net>2019-02-01 15:12:29 -0800
commitc49f0ce0b692e8018c32f529a718bb41bc934ab3 (patch)
treedacda6e90038bd08c3a5bbff6d34eb82cda99f7d /drivers
parent3ebb18a48cbf03448087f9eef08cbade84fc0118 (diff)
downloadlinux-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.c3
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;