USB: serial: make usb_serial_driver::write_room return uint

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Line disciplines expect a positive value or zero returned from
tty->ops->write_room (invoked by tty_write_room). Both of them are being
updated to return an unsigned int. Switch also
usb_serial_driver::write_room and all its users.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
[ johan: amend commit message, drop unrelated comment change ]
Signed-off-by: Johan Hovold <johan@kernel.org>

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Jiri Slaby 2021-05-05 11:19:16 +02:00 • committed by Johan Hovold

parent d07f6ca923

commit 94cc7aeaf6

20 changed files with 50 additions and 50 deletions

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include/linux/usb/serial.h

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