The "rcu_dereference()" call is used directly in a condition.
Since its return value is never dereferenced it is recommended to use
"rcu_access_pointer()" instead of "rcu_dereference()".
Therefore, this patch makes the replacement.
The following Coccinelle semantic patch was used:
@@
@@
(
if(
(<+...
- rcu_dereference
+ rcu_access_pointer
(...)
...+>)) {...}
|
while(
(<+...
- rcu_dereference
+ rcu_access_pointer
(...)
...+>)) {...}
)
Signed-off-by: Andreea-Cristina Bernat <bernat.ada@xxxxxxxxx>
---
drivers/staging/rtl8188eu/core/rtw_mlme.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme.c b/drivers/staging/rtl8188eu/core/rtw_mlme.c
index 155282e..8643003 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme.c
@@ -1544,7 +1544,7 @@ void rtw_dynamic_check_timer_handlder(struct adapter *adapter)
rcu_read_lock();
- if (rcu_dereference(adapter->pnetdev->rx_handler_data) &&
+ if (rcu_access_pointer(adapter->pnetdev->rx_handler_data) &&
(check_fwstate(pmlmepriv, WIFI_STATION_STATE|WIFI_ADHOC_STATE) == true)) {
/* expire NAT2.5 entry */
nat25_db_expire(adapter);
--
1.9.1
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