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riscom/rocket: switch to int put_char method

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Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2008-04-30 00:54:05 -07:00 committed by Linus Torvalds
parent d7e752e275
commit bbbbb96f5e
2 changed files with 9 additions and 5 deletions
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9
drivers/char/riscom8.c
View file

@ -1161,16 +1161,17 @@ static int rc_write(struct tty_struct * tty,
return total;
}
static void rc_put_char(struct tty_struct * tty, unsigned char ch)
static int rc_put_char(struct tty_struct * tty, unsigned char ch)
{
struct riscom_port *port = (struct riscom_port *)tty->driver_data;
unsigned long flags;
int ret = 0;
if (rc_paranoia_check(port, tty->name, "rc_put_char"))
return;
return 0;
if (!tty || !port->xmit_buf)
return;
return 0;
spin_lock_irqsave(&riscom_lock, flags);
@ -1180,9 +1181,11 @@ static void rc_put_char(struct tty_struct * tty, unsigned char ch)
port->xmit_buf[port->xmit_head++] = ch;
port->xmit_head &= SERIAL_XMIT_SIZE - 1;
port->xmit_cnt++;
ret = 1;
out:
spin_unlock_irqrestore(&riscom_lock, flags);
return ret;
}
static void rc_flush_chars(struct tty_struct * tty)

5
drivers/char/rocket.c
View file

@ -1663,14 +1663,14 @@ static void rp_hangup(struct tty_struct *tty)
* writing routines will write directly to transmit FIFO.
* Write buffer and counters protected by spinlocks
*/
static void rp_put_char(struct tty_struct *tty, unsigned char ch)
static int rp_put_char(struct tty_struct *tty, unsigned char ch)
{
struct r_port *info = (struct r_port *) tty->driver_data;
CHANNEL_t *cp;
unsigned long flags;
if (rocket_paranoia_check(info, "rp_put_char"))
return;
return 0;
/*
* Grab the port write mutex, locking out other processes that try to
@ -1699,6 +1699,7 @@ static void rp_put_char(struct tty_struct *tty, unsigned char ch)
}
spin_unlock_irqrestore(&info->slock, flags);
mutex_unlock(&info->write_mtx);
return 1;
}
/*