From: Johan Hovold <jhovold@gmail.com>
Date: Sun, 5 May 2013 18:32:31 +0000 (+0200)
Subject: USB: io_ti: fix chars_in_buffer overhead
X-Git-Tag: v3.10-rc3~26^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b16634adce951a7371be931487034f7365971ed0;p=pandora-kernel.git

USB: io_ti: fix chars_in_buffer overhead

Use the new generic usb-serial wait_until_sent implementation to wait
for hardware buffers to drain.

This removes the need to check the hardware buffers in chars_in_buffer
and thus removes the overhead introduced by commit 263e1f9f ("USB:
io_ti: query hardware-buffer status in chars_in_buffer") without
breaking tty_wait_until_sent (used by, for example, tcdrain, tcsendbreak
and close).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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