On 5/5/2021 12:19 PM, Jiri Slaby wrote:

Line disciplines expect a positive value or zero returned from
tty->ops->write_room (invoked by tty_write_room). So make this
assumption explicit by using unsigned int as a return value. Both of
tty->ops->write_room and tty_write_room.

Signed-off-by: Jiri Slaby <redacted>

 drivers/tty/ehv_bytechan.c             | 4 ++--

Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>

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Best Regards, Laurentiu