[PATCH v2] staging: rtl8192u: r8192U_core: Fix driver_info dereference as a null pointer

[Rickard Strandqvist]

Fix possible use of use of driver_info as a null pointer in
query_rxdesc_status()
This could happen if stats->RxIs40MHzPacket still has the
default value of zero.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@xxxxxxxxxxxxxxxxxx>
---
 drivers/staging/rtl8192u/r8192U_core.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index e031a25..df43b6d 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -4474,13 +4474,10 @@ static void query_rxdesc_status(struct sk_buff *skb,
 		skb_pull(skb, stats->RxBufShift + stats->RxDrvInfoSize);
 	}
 
-	/* for debug 2008.5.29 */
-
-	//added by vivi, for MP, 20080108
-	stats->RxIs40MHzPacket = driver_info->BW;
-	if (stats->RxDrvInfoSize != 0)
+	if (driver_info) {
+		stats->RxIs40MHzPacket = driver_info->BW;
 		TranslateRxSignalStuff819xUsb(skb, stats, driver_info);
-
+	}
 }
 
 static void rtl8192_rx_nomal(struct sk_buff *skb)
-- 
1.7.10.4

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