From: Arthur Kiyanovski akiyano@amazon.com
[ Upstream commit e9a1de378dd46375f9abfd8de1e6f59ee114a793 ]
In case the "func" parameter is NULL we now return "-EINVAL". This shouldn't happen in general, but when it does happen, this is the proper way to handle it.
We also check func for NULL in the beginning of the function, as there is no reason to do all the work and realize in the end of the function it was useless.
Signed-off-by: Sameeh Jubran sameehj@amazon.com Signed-off-by: Arthur Kiyanovski akiyano@amazon.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/ethernet/amazon/ena/ena_com.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/amazon/ena/ena_com.c b/drivers/net/ethernet/amazon/ena/ena_com.c index 3afc0e59a2bd..d07f7f65169a 100644 --- a/drivers/net/ethernet/amazon/ena/ena_com.c +++ b/drivers/net/ethernet/amazon/ena/ena_com.c @@ -2137,6 +2137,9 @@ int ena_com_get_hash_function(struct ena_com_dev *ena_dev, rss->hash_key; int rc;
+ if (unlikely(!func)) + return -EINVAL; + rc = ena_com_get_feature_ex(ena_dev, &get_resp, ENA_ADMIN_RSS_HASH_FUNCTION, rss->hash_key_dma_addr, @@ -2149,8 +2152,7 @@ int ena_com_get_hash_function(struct ena_com_dev *ena_dev, if (rss->hash_func) rss->hash_func--;
- if (func) - *func = rss->hash_func; + *func = rss->hash_func;
if (key) memcpy(key, hash_key->key, (size_t)(hash_key->keys_num) << 2);