From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Wed, 1 Apr 2009 21:30:04 +0000 (+0400)
Subject: serial: fixup /proc/tty/driver/serial after proc_fops conversion
X-Git-Tag: v2.6.30-rc1~410
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=833bb3046b6cb320e775ea2160ddca87d53260d5;p=pandora-kernel.git

serial: fixup /proc/tty/driver/serial after proc_fops conversion

"struct tty_driver *" lies in m->private not in v which is
SEQ_TOKEN_START which is 1 which is enough to trigger NULL dereference
next line:

	BUG: unable to handle kernel NULL pointer dereference at 000000ad
	IP: [<c040d689>] uart_proc_show+0xe/0x2b0

Noticed by Linus.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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