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....@gmail.com>
---
drivers/net/wireless/ath/carl9170/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/carl9170/main.c
b/drivers/net/wireless/ath/carl9170/main.c
index f8ded84..12018ff 100644
--- a/drivers/net/wireless/ath/carl9170/main.c
+++ b/drivers/net/wireless/ath/carl9170/main.c
@@ -1431,7 +1431,7 @@ static int carl9170_op_ampdu_action(struct ieee80211_hw
*hw,
return -EOPNOTSUPP;
rcu_read_lock();
- if (rcu_dereference(sta_info->agg[tid])) {
+ if (rcu_access_pointer(sta_info->agg[tid])) {
rcu_read_unlock();
return -EBUSY;
}
--
1.9.1
--
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