USB: serial: add wait_until_sent operation
authorJohan Hovold <jhovold@gmail.com>
Sun, 5 May 2013 18:32:27 +0000 (20:32 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 17 May 2013 00:32:21 +0000 (17:32 -0700)
Add wait_until_sent operation which can be used to wait for hardware
buffers to drain.

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

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