netdev - [PATCH 03/22] staging: rtl8723bs: Fix dereference before check warning in os_dep/recv

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Message-Id: <20170408160745.14328-4-Larry.Finger@lwfinger.net>
Date:   Sat,  8 Apr 2017 11:07:26 -0500
From:   Larry Finger <Larry.Finger@...inger.net>
To:     gregkh@...uxfoundation.org
Cc:     netdev@...r.kernel.org, devel@...verdev.osuosl.org,
        hdegoede@...hat.com, hadess@...ess.net, jes.sorensen@...il.com,
        Larry Finger <Larry.Finger@...inger.net>
Subject: [PATCH 03/22] staging: rtl8723bs: Fix dereference before check warning in os_dep/recv_linux.c

Smatch lists the following warning:

  CHECK   drivers/staging/rtl8723bs/os_dep/recv_linux.c
drivers/staging/rtl8723bs/os_dep/recv_linux.c:353 rtw_recv_indicatepkt() warn: variable dereferenced before check 'precv_frame' (see line 312)

This warning is fixed by removing the test at line 353.

Signed-off-by: Larry Finger <Larry.Finger@...inger.net>
---
 drivers/staging/rtl8723bs/os_dep/recv_linux.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/rtl8723bs/os_dep/recv_linux.c b/drivers/staging/rtl8723bs/os_dep/recv_linux.c
index c677a5216b54..e731ab4e2bd7 100644
--- a/drivers/staging/rtl8723bs/os_dep/recv_linux.c
+++ b/drivers/staging/rtl8723bs/os_dep/recv_linux.c
@@ -350,8 +350,7 @@ int rtw_recv_indicatepkt(struct adapter *padapter, union recv_frame *precv_frame
 _recv_indicatepkt_drop:
 
 	 /* enqueue back to free_recv_queue */
-	 if (precv_frame)
-		 rtw_free_recvframe(precv_frame, pfree_recv_queue);
+	 rtw_free_recvframe(precv_frame, pfree_recv_queue);
 
 	 DBG_COUNTER(padapter->rx_logs.os_indicate_err);
 	 return _FAIL;
-- 
2.12.0