From 487f9c6710e7dff338e59820f6cfaeaaa87cb532 Mon Sep 17 00:00:00 2001
From: Luiz Fernando Capitulino <lcapitulino@mandriva.com.br>
Date: Mon, 28 Nov 2005 19:16:05 -0200
Subject: [PATCH] [PATCH] USB: usbserial: Adds missing checks and bug fix.

Checks if 'port' is NULL before using it in all tty operations, this
can avoid NULL pointer dereferences.

Signed-off-by: Luiz Capitulino <lcapitulino@mandriva.com.br>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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