linux-kernel - [PATCH] staging: lirc: fix NULL pointer dereference

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Date:	Wed, 02 Apr 2014 17:18:39 +0900
From:	Daeseok Youn <daeseok.youn@...il.com>
To:	m.chehab@...sung.com
Cc:	gregkh@...uxfoundation.org, jarod@...sonet.com,
	dan.carpenter@...cle.com, paulmck@...ux.vnet.ibm.com,
	mtrompou@...il.com, bernat.ada@...il.com,
	linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] staging: lirc: fix NULL pointer dereference


coccicheck says:
 drivers/staging/media/lirc/lirc_igorplugusb.c:226:15-21:
ERROR: ir is NULL but dereferenced.

Signed-off-by: Daeseok Youn <daeseok.youn@...il.com>
---
 drivers/staging/media/lirc/lirc_igorplugusb.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/media/lirc/lirc_igorplugusb.c b/drivers/staging/media/lirc/lirc_igorplugusb.c
index f508a13..0ef393b 100644
--- a/drivers/staging/media/lirc/lirc_igorplugusb.c
+++ b/drivers/staging/media/lirc/lirc_igorplugusb.c
@@ -223,8 +223,8 @@ static int unregister_from_lirc(struct igorplug *ir)
 	int devnum;
 
 	if (!ir) {
-		dev_err(&ir->usbdev->dev,
-			"%s: called with NULL device struct!\n", __func__);
+		printk(DRIVER_NAME "%s: called with NULL device struct!\n",
+		       __func__);
 		return -EINVAL;
 	}
 
-- 
1.7.4.4


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