[Bug 511157] Re: laptop crash after application make use of sierra modem

[Andy Whitcroft]

Seems to have made it upstream, and appears to be cc: stable so we may
well get it shortly that way.

commit b87c6e86dac1bb5222279cc8ff7e09529e1c4ed9
Author: Elina Pasheva <epasheva at sierrawireless.com>
Date:   Mon Feb 15 14:50:14 2010 -0800

    USB: serial: sierra driver indat_callback fix
    
    A crash has been reported with sierra driver on disconnect with
    Ubuntu/Lucid distribution based on kernel-2.6.32.
    The cause of the crash was determined as "NULL tty pointer was being
    referenced" and the NULL pointer was passed by sierra_indat_callback().
    
    This patch modifies sierra_indat_callback() function to check for NULL
    tty structure pointer. This modification prevents a crash from happening
    when the device is disconnected.
    
    This patch fixes the bug reported in Launchpad:
      https://bugs.launchpad.net/ubuntu/+source/linux/+bug/511157
    
    Signed-off-by: Elina Pasheva <epasheva at sierrawireless.com>
    Cc: stable <stable at kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>

-- 
laptop crash after application make use of sierra modem
https://bugs.launchpad.net/bugs/511157
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