[PATCH][v3.19.y] tun: return proper error code from tun_do_read

[Joseph Salisbury]

Hello,

Please consider including mainline commit
957f094f221f81e457133b1f4c4d95ffa49ff731 in the next v3.19.y release. 
It was included in the mainline tree as of v4.0-rc1.  It has been tested
and confirmed to resolve:
http://bugs.launchpad.net/bugs/1448942
And upstream bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=90901

The bug was introduce in v3.19-rc1 by commit 9b067034d0, so it is not
needed in any other stable kernels.



commit 957f094f221f81e457133b1f4c4d95ffa49ff731
Author: Alex Gartrell <agartrell@xxxxxx>
Date:   Thu Dec 25 23:22:49 2014 -0800

    tun: return proper error code from tun_do_read



Sincerely,

Joseph Salisbury


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