From: Peter Hurley <peter@hurleysoftware.com>
Date: Sat, 15 Jun 2013 13:14:29 +0000 (-0400)
Subject: n_tty: Don't wait for buffer work in read() loop
X-Git-Tag: v3.12-rc1~182^2~205
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f95499c3030fe1bfad57745f2db1959c5b43dca8;p=pandora-kernel.git

n_tty: Don't wait for buffer work in read() loop

User-space read() can run concurrently with receiving from device;
waiting for receive_buf() to complete is not required.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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