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[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>
This commit is contained in:
Akinobu Mita 2006-10-29 22:46:35 -08:00 committed by Linus Torvalds
parent 0e2d57fc6e
commit 70812522b8
1 changed files with 1 additions and 1 deletions
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2
drivers/isdn/gigaset/common.c
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@ -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) } else if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)
skb_reserve(bcs->skb, HW_HDR_LEN); skb_reserve(bcs->skb, HW_HDR_LEN);
else { else {
dev_warn(cs->dev, "could not allocate skb\n"); gig_dbg(DEBUG_INIT, "could not allocate skb\n");
bcs->inputstate |= INS_skip_frame; bcs->inputstate |= INS_skip_frame;
} }