tree 8d7242002e36c347c5d2a4ce7154aacfeca73633
parent a37025b5c702aaf87191cd75fcc42c54454f16f5
author Johan Hovold <jhovold@gmail.com> 1367778751 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1368750742 -0700

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>