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net: hns3: add pointer checking at the beginning of the exported functions. 

These functions are exported, add pointer checking at the beginning
can make them more safe.

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yonglong Liu 2019-02-20 10:32:40 +08:00 committed by David S. Miller
parent 2fb44dd0e8
commit bdd59d6611
1 changed files with 21 additions and 0 deletions
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21
drivers/net/ethernet/hisilicon/hns3/hnae3.c
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@ -32,6 +32,9 @@ static bool hnae3_client_match(enum hnae3_client_type client_type,
void hnae3_set_client_init_flag(struct hnae3_client *client,
struct hnae3_ae_dev *ae_dev, int inited)
{
if (!client || !ae_dev)
return;
switch (client->type) {
case HNAE3_CLIENT_KNIC:
hnae3_set_bit(ae_dev->flag, HNAE3_KNIC_CLIENT_INITED_B, inited);
@ -109,6 +112,9 @@ int hnae3_register_client(struct hnae3_client *client)
struct hnae3_ae_dev *ae_dev;
int ret = 0;
if (!client)
return -ENODEV;
mutex_lock(&hnae3_common_lock);
/* one system should only have one client for every type */
list_for_each_entry(client_tmp, &hnae3_client_list, node) {
@ -141,6 +147,9 @@ void hnae3_unregister_client(struct hnae3_client *client)
{
struct hnae3_ae_dev *ae_dev;
if (!client)
return;
mutex_lock(&hnae3_common_lock);
/* un-initialize the client on every matched port */
list_for_each_entry(ae_dev, &hnae3_ae_dev_list, node) {
@ -163,6 +172,9 @@ void hnae3_register_ae_algo(struct hnae3_ae_algo *ae_algo)
struct hnae3_client *client;
int ret = 0;
if (!ae_algo)
return;
mutex_lock(&hnae3_common_lock);
list_add_tail(&ae_algo->node, &hnae3_ae_algo_list);
@ -209,6 +221,9 @@ void hnae3_unregister_ae_algo(struct hnae3_ae_algo *ae_algo)
struct hnae3_ae_dev *ae_dev;
struct hnae3_client *client;
if (!ae_algo)
return;
mutex_lock(&hnae3_common_lock);
/* Check if there are matched ae_dev */
list_for_each_entry(ae_dev, &hnae3_ae_dev_list, node) {
@ -245,6 +260,9 @@ int hnae3_register_ae_dev(struct hnae3_ae_dev *ae_dev)
struct hnae3_client *client;
int ret = 0;
if (!ae_dev)
return -ENODEV;
mutex_lock(&hnae3_common_lock);
list_add_tail(&ae_dev->node, &hnae3_ae_dev_list);
@ -307,6 +325,9 @@ void hnae3_unregister_ae_dev(struct hnae3_ae_dev *ae_dev)
struct hnae3_ae_algo *ae_algo;
struct hnae3_client *client;
if (!ae_dev)
return;
mutex_lock(&hnae3_common_lock);
/* Check if there are matched ae_algo */
list_for_each_entry(ae_algo, &hnae3_ae_algo_list, node) {