From: Leo Kim <leo.kim@atmel.com>
Date: Tue, 22 Sep 2015 05:34:43 +0000 (+0900)
Subject: staging: wilc1000: Modify null check routine
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=234837decbffdb28325588f66811796698d68cf2;p=openwrt%2Fstaging%2Fblogic.git

staging: wilc1000: Modify null check routine

This patch removes the potential faults which may happen when unexpectedly
getting access to invalid pointer. Return error when the invalid memory is
accessed.

Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/wilc1000/host_interface.c b/drivers/staging/wilc1000/host_interface.c
index 62f4a8a08cde..158d8b898b75 100644
--- a/drivers/staging/wilc1000/host_interface.c
+++ b/drivers/staging/wilc1000/host_interface.c
@@ -2384,8 +2384,10 @@ static s32 Handle_RcvdGnrlAsyncInfo(tstrWILC_WFIDrv *drvHandler,
 	s32 s32Err = 0;
 	tstrWILC_WFIDrv *pstrWFIDrv = (tstrWILC_WFIDrv *) drvHandler;
 
-	if (pstrWFIDrv == NULL)
+	if (!pstrWFIDrv) {
 		PRINT_ER("Driver handler is NULL\n");
+		return -ENODEV;
+	}
 	PRINT_D(GENERIC_DBG, "Current State = %d,Received state = %d\n", pstrWFIDrv->enuHostIFstate,
 		pstrRcvdGnrlAsyncInfo->pu8Buffer[7]);