From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Mon, 30 Oct 2006 06:46:35 +0000 (-0800)
Subject: [PATCH] isdn/gigaset: avoid cs->dev null pointer dereference
X-Git-Tag: v2.6.19-rc4~16
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=70812522b847bdb8fabee963191734f5fa3143f3;p=linux-2.6

[PATCH] isdn/gigaset: avoid cs->dev null pointer dereference

When gigaset_initbcs() is called, cs->dev is not initialized yet.  If
dev_alloc_skb() failed in this function, NULL poinster dereference will
happen at dev_warn().

Cc: Kai Germaschewski <kai.germaschewski@gmx.de>
Cc: Hansjoerg Lipp <hjlipp@web.de>
Cc: Tilman Schmidt <tilman@imap.cc>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c
index aca165d43a..d8d256dadd 100644
--- a/drivers/isdn/gigaset/common.c
+++ b/drivers/isdn/gigaset/common.c
@@ -616,7 +616,7 @@ static struct bc_state *gigaset_initbcs(struct bc_state *bcs,
 	} else if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)
 		skb_reserve(bcs->skb, HW_HDR_LEN);
 	else {
-		dev_warn(cs->dev, "could not allocate skb\n");
+		gig_dbg(DEBUG_INIT, "could not allocate skb\n");
 		bcs->inputstate |= INS_skip_frame;
 	}