diff options
Diffstat (limited to 'drivers/usb/gadget/function/u_serial.c')
| -rw-r--r-- | drivers/usb/gadget/function/u_serial.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 1e59204ec7aa..281ca766698a 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -774,34 +774,34 @@ static void gs_flush_chars(struct tty_struct *tty) spin_unlock_irqrestore(&port->port_lock, flags); } -static int gs_write_room(struct tty_struct *tty) +static unsigned int gs_write_room(struct tty_struct *tty) { struct gs_port *port = tty->driver_data; unsigned long flags; - int room = 0; + unsigned int room = 0; spin_lock_irqsave(&port->port_lock, flags); if (port->port_usb) room = kfifo_avail(&port->port_write_buf); spin_unlock_irqrestore(&port->port_lock, flags); - pr_vdebug("gs_write_room: (%d,%p) room=%d\n", + pr_vdebug("gs_write_room: (%d,%p) room=%u\n", port->port_num, tty, room); return room; } -static int gs_chars_in_buffer(struct tty_struct *tty) +static unsigned int gs_chars_in_buffer(struct tty_struct *tty) { struct gs_port *port = tty->driver_data; unsigned long flags; - int chars = 0; + unsigned int chars; spin_lock_irqsave(&port->port_lock, flags); chars = kfifo_len(&port->port_write_buf); spin_unlock_irqrestore(&port->port_lock, flags); - pr_vdebug("gs_chars_in_buffer: (%d,%p) chars=%d\n", + pr_vdebug("gs_chars_in_buffer: (%d,%p) chars=%u\n", port->port_num, tty, chars); return chars; @@ -1198,7 +1198,7 @@ void gserial_free_line(unsigned char port_num) struct gs_port *port; mutex_lock(&ports[port_num].lock); - if (WARN_ON(!ports[port_num].port)) { + if (!ports[port_num].port) { mutex_unlock(&ports[port_num].lock); return; } |