From: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Date: Mon, 18 May 2015 00:01:48 +0000 (+1200)
Subject: n_tty: Fix calculation of size in canon_copy_from_read_buf
X-Git-Tag: omap-for-v4.2/wakeirq-drivers~2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da555db6b06340e3f6b4b0a0448c30bebfe23b0a;p=pandora-kernel.git

n_tty: Fix calculation of size in canon_copy_from_read_buf

There was a hardcoded value of 4096 which should have been N_TTY_BUF_SIZE.
This caused reads from tty to fail with EFAULT when they shouldn't have
done if N_TTY_BUF_SIZE was declared to be something other than 4096.

Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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