[PATCH 1/3] staging: r8188eu: fix null check in rtw_free_recvframe

Vihas Makwana
2022-04-24T16:31:55Z

There's a NULL check on padapter in rtw_recv.c:170 which makes no sense as
rtw_recv.c:152 dereferences it unconditionally and it would have already
crashed at this point.
Fix this by moving the dereference line inside the check.

Signed-off-by: Vihas Makwana <makvihas@gmail.com>
---
drivers/staging/r8188eu/core/rtw_recv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/r8188eu/core/rtw_recv.c b/drivers/staging/r8188eu/core/rtw_recv.c
index c1005ddaa..4cf9b4b8f 100644
--- a/drivers/staging/r8188eu/core/rtw_recv.c
+++ b/drivers/staging/r8188eu/core/rtw_recv.c
@@ -154,7 +154,6 @@ int rtw_free_recvframe(struct recv_frame *precvframe, struct __queue *pfree_recv
if (!precvframe)
return _FAIL;
padapter = precvframe->adapter;
- precvpriv = &padapter->recvpriv;
if (precvframe->pkt) {
dev_kfree_skb_any(precvframe->pkt);/* free skb by driver */
precvframe->pkt = NULL;
@@ -169,6 +168,7 @@ int rtw_free_recvframe(struct recv_frame *precvframe, struct __queue *pfree_recv
list_add_tail(&precvframe->list, get_list_head(pfree_recv_queue));

if (padapter) {
+ precvpriv = &padapter->recvpriv;
if (pfree_recv_queue == &precvpriv->free_recv_queue)
precvpriv->free_recvframe_cnt++;
}
--
2.30.2