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USB: ti_usb_3410_5052: query hardware-buffer status in chars_in_buffer
authorJohan Hovold <jhovold@gmail.com>
Thu, 18 Apr 2013 15:33:21 +0000 (17:33 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 19 Apr 2013 17:24:13 +0000 (10:24 -0700)
Query hardware-buffer status in chars_in_buffer should the write fifo be
empty.

This is needed to make the tty layer wait for hardware buffers to drain
on close.

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

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