diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2021-05-05 11:19:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-13 18:29:11 +0200 |
| commit | 9a33fbf9d23034d7e89849c587b0aed0e4cf794d (patch) | |
| tree | 01de10803e6c4224214136acba1c91a2004022c6 /drivers | |
| parent | 03b3b1a2405ccd71570cd5ec1fe4abd7bb4891cb (diff) | |
tty: make tty_buffer_space_avail return uint
tty_buffer_space_avail returns values >= 0, so make it clear by the
return type.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210505091928.22010-25-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/8250/8250_aspeed_vuart.c | 4 | ||||
| -rw-r--r-- | drivers/tty/tty_buffer.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c index 2bf1d8582d9a..a28a394ba32a 100644 --- a/drivers/tty/serial/8250/8250_aspeed_vuart.c +++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c @@ -329,7 +329,7 @@ static int aspeed_vuart_handle_irq(struct uart_port *port) { struct uart_8250_port *up = up_to_u8250p(port); unsigned int iir, lsr; - int space, count; + unsigned int space, count; iir = serial_port_in(port, UART_IIR); @@ -353,7 +353,7 @@ static int aspeed_vuart_handle_irq(struct uart_port *port) jiffies + unthrottle_timeout); } else { - count = min(space, 256); + count = min(space, 256U); do { serial8250_read_char(up, lsr); diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index 55b1f1711341..585a19f65284 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -88,7 +88,7 @@ EXPORT_SYMBOL_GPL(tty_buffer_unlock_exclusive); * pre-allocate if memory guarantee is required). */ -int tty_buffer_space_avail(struct tty_port *port) +unsigned int tty_buffer_space_avail(struct tty_port *port) { int space = port->buf.mem_limit - atomic_read(&port->buf.mem_used); return max(space, 0); |