From: Jiri Slaby <jslaby@suse.cz>
Date: Mon, 28 Feb 2011 09:34:05 +0000 (+0100)
Subject: USB: serial/keyspan_pda, fix potential tty NULL dereferences
X-Git-Tag: v2.6.39-rc1~472^2~84
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f7d7aedfcd4e20e7dfc7356d30cc22dc0b0f493e;p=pandora-kernel.git

USB: serial/keyspan_pda, fix potential tty NULL dereferences

Make sure that we check the return value of tty_port_tty_get.
Sometimes it may return NULL and we later dereference that.

There are several places to check. For easier handling,
tty_port_tty_get is moved directly to the palce where needed in
keyspan_pda_rx_interrupt.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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