AOSCOS: staging: sb105x: revise type of second argument of mp_send_xchar() as u8

Per commit 3a00da0 ("tty: make tty_operations::send_xchar accept u8
char"), the type of the second argument of member function
`mp_send_xchar()' in `struct tty_operations' was revised from type `char'
to type `u8'.

Revise driver code accordingly.

Fixes: "AOSCOS: Revert "staging: sb105x: delete the driver""
Signed-off-by: Mingcong Bai <[email protected]>

Signed-off-by: Kexy Biscuit <[email protected]>

Author: MingcongBai

drivers/staging/sb105x/sb_pci_mp.c

@@ -43,7 +43,7 @@ static ssize_t mp_write(struct tty_struct *tty, const unsigned char *buf, long u
 static unsigned int mp_write_room(struct tty_struct *tty);
 static unsigned int mp_chars_in_buffer(struct tty_struct *tty);
 static void mp_flush_buffer(struct tty_struct *tty);
-static void mp_send_xchar(struct tty_struct *tty, char ch);
+static void mp_send_xchar(struct tty_struct *tty, u8 ch);
 static void mp_throttle(struct tty_struct *tty);
 static void mp_unthrottle(struct tty_struct *tty);
 static int mp_get_info(struct sb_uart_state *state, struct serial_struct *retinfo);
@@ -703,7 +703,7 @@ static void mp_flush_buffer(struct tty_struct *tty)
 	tty_wakeup(tty);
 }
 
-static void mp_send_xchar(struct tty_struct *tty, char ch)
+static void mp_send_xchar(struct tty_struct *tty, u8 ch)
 {
 	struct sb_uart_state *state = tty->driver_data;
 	struct sb_uart_port *port = state->port;