diff options
author | Jiri Slaby <jslaby@suse.cz> | 2021-05-05 11:19:16 +0200 |
---|---|---|
committer | Johan Hovold <johan@kernel.org> | 2021-05-19 10:56:40 +0200 |
commit | 94cc7aeaf6c0cff0b8aeb7cb3579cee46b923560 (patch) | |
tree | 480c01d00d7ff2fd9bd25f7becd79625a8bd771b /drivers/usb/serial/mos7840.c | |
parent | d07f6ca923ea0927a1024dfccafc5b53b61cfecc (diff) | |
download | linux-94cc7aeaf6c0cff0b8aeb7cb3579cee46b923560.tar.bz2 |
USB: serial: make usb_serial_driver::write_room return uint
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>
Diffstat (limited to 'drivers/usb/serial/mos7840.c')
-rw-r--r-- | drivers/usb/serial/mos7840.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 28e4093794e0..609799aaba72 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -818,12 +818,12 @@ static void mos7840_break(struct tty_struct *tty, int break_state) * Otherwise we return a negative error number. *****************************************************************************/ -static int mos7840_write_room(struct tty_struct *tty) +static unsigned int mos7840_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int i; - int room = 0; + unsigned int room = 0; unsigned long flags; spin_lock_irqsave(&mos7840_port->pool_lock, flags); @@ -834,7 +834,7 @@ static int mos7840_write_room(struct tty_struct *tty) spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; - dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); + dev_dbg(&mos7840_port->port->dev, "%s - returns %u\n", __func__, room); return room; } |