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| 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/mos7720.c | |
| parent | Linux 5.13-rc2 (diff) | |
| download | linux-94cc7aeaf6c0cff0b8aeb7cb3579cee46b923560.tar.xz linux-94cc7aeaf6c0cff0b8aeb7cb3579cee46b923560.zip | |
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/mos7720.c')
| -rw-r--r-- | drivers/usb/serial/mos7720.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 6ee83886e2c9..d9cc7f840d48 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1033,11 +1033,11 @@ static void mos7720_break(struct tty_struct *tty, int break_state) * If successful, we return the amount of room that we have for this port * Otherwise we return a negative error number. */ -static int mos7720_write_room(struct tty_struct *tty) +static unsigned int mos7720_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct moschip_port *mos7720_port; - int room = 0; + unsigned int room = 0; int i; mos7720_port = usb_get_serial_port_data(port); @@ -1051,7 +1051,7 @@ static int mos7720_write_room(struct tty_struct *tty) room += URB_TRANSFER_BUFFER_SIZE; } - dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); + dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); return room; } |