diff options
Diffstat (limited to 'drivers/tty/serial/sc26xx.c')
| -rw-r--r-- | drivers/tty/serial/sc26xx.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/tty/serial/sc26xx.c b/drivers/tty/serial/sc26xx.c index aced1dd923d..c9735680762 100644 --- a/drivers/tty/serial/sc26xx.c +++ b/drivers/tty/serial/sc26xx.c @@ -136,16 +136,17 @@ static void sc26xx_disable_irq(struct uart_port *port, int mask) WRITE_SC(port, IMR, up->imr); } -static struct tty_struct *receive_chars(struct uart_port *port) +static bool receive_chars(struct uart_port *port) { - struct tty_struct *tty = NULL; + struct tty_port *tport = NULL; int limit = 10000; unsigned char ch; char flag; u8 status; + /* FIXME what is this trying to achieve? */ if (port->state != NULL) /* Unopened serial console */ - tty = port->state->port.tty; + tport = &port->state->port; while (limit-- > 0) { status = READ_SC_PORT(port, SR); @@ -185,9 +186,9 @@ static struct tty_struct *receive_chars(struct uart_port *port) if (status & port->ignore_status_mask) continue; - tty_insert_flip_char(tty, ch, flag); + tty_insert_flip_char(tport, ch, flag); } - return tty; + return !!tport; } static void transmit_chars(struct uart_port *port) @@ -217,36 +218,36 @@ static void transmit_chars(struct uart_port *port) static irqreturn_t sc26xx_interrupt(int irq, void *dev_id) { struct uart_sc26xx_port *up = dev_id; - struct tty_struct *tty; unsigned long flags; + bool push; u8 isr; spin_lock_irqsave(&up->port[0].lock, flags); - tty = NULL; + push = false; isr = READ_SC(&up->port[0], ISR); if (isr & ISR_TXRDYA) transmit_chars(&up->port[0]); if (isr & ISR_RXRDYA) - tty = receive_chars(&up->port[0]); + push = receive_chars(&up->port[0]); spin_unlock(&up->port[0].lock); - if (tty) - tty_flip_buffer_push(tty); + if (push) + tty_flip_buffer_push(&up->port[0].state->port); spin_lock(&up->port[1].lock); - tty = NULL; + push = false; if (isr & ISR_TXRDYB) transmit_chars(&up->port[1]); if (isr & ISR_RXRDYB) - tty = receive_chars(&up->port[1]); + push = receive_chars(&up->port[1]); spin_unlock_irqrestore(&up->port[1].lock, flags); - if (tty) - tty_flip_buffer_push(tty); + if (push) + tty_flip_buffer_push(&up->port[1].state->port); return IRQ_HANDLED; } |