From: Stanislav Kozina <skozina@redhat.com>
Date: Thu, 9 Aug 2012 13:48:58 +0000 (+0100)
Subject: tty: Fix possible race in n_tty_read()
X-Git-Tag: omap-cleanup-sparseirq-for-v3.7~141
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=00aaae033e323af33740e7012a8ba4b0fa6dce20;p=pandora-kernel.git

tty: Fix possible race in n_tty_read()

Fix possible panic caused by unlocked access to tty->read_cnt in
while-loop condition in n_tty_read().

Signed-off-by: Stanislav Kozina <skozina@redhat.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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