The "br_port" local variables obtained through the rcu_dereference() calls are
not dereferenced in the rest of their function.
Therefore, it is recommended to use rcu_access_pointer() instead of
rcu_dereference().
This patch makes the replacements.
The first step to detect this was made with the following Coccinelle semantic
patch:
@@
identifier p;
@@
* p = rcu_dereference(...)
... when any
when != p
(
* if( (<+...p...+>) ) { ... }
|
* while( (<+...p...+>) ) { ... }
)
... when != p
After the analysis of the output, the change was made manually.
Signed-off-by: Andreea-Cristina Bernat <bernat....@gmail.com>
---
drivers/staging/rtl8188eu/core/rtw_xmit.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/rtl8188eu/core/rtw_xmit.c
b/drivers/staging/rtl8188eu/core/rtw_xmit.c
index 1413ec8..93228dc 100644
--- a/drivers/staging/rtl8188eu/core/rtw_xmit.c
+++ b/drivers/staging/rtl8188eu/core/rtw_xmit.c
@@ -1684,7 +1684,7 @@ static int rtw_br_client_tx(struct adapter *padapter,
struct sk_buff **pskb)
void *br_port = NULL;
rcu_read_lock();
- br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
+ br_port = rcu_access_pointer(padapter->pnetdev->rx_handler_data);
rcu_read_unlock();
spin_lock_bh(&padapter->br_ext_lock);
if (!(skb->data[0] & 1) && br_port &&
@@ -1868,7 +1868,7 @@ s32 rtw_xmit(struct adapter *padapter, struct sk_buff
**ppkt)
}
rcu_read_lock();
- br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
+ br_port = rcu_access_pointer(padapter->pnetdev->rx_handler_data);
rcu_read_unlock();
if (br_port && check_fwstate(pmlmepriv,
WIFI_STATION_STATE|WIFI_ADHOC_STATE)) {
--
1.9.1
--
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