diff options
Diffstat (limited to 'drivers/tty/serial/samsung.c')
| -rw-r--r-- | drivers/tty/serial/samsung.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index dc4be5408853..1d7dd8605b22 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -621,16 +621,12 @@ finish: return IRQ_HANDLED; } -static irqreturn_t s3c24xx_serial_rx_chars_pio(void *dev_id) +static void s3c24xx_serial_rx_drain_fifo(struct s3c24xx_uart_port *ourport) { - struct s3c24xx_uart_port *ourport = dev_id; struct uart_port *port = &ourport->port; unsigned int ufcon, ch, flag, ufstat, uerstat; - unsigned long flags; int max_count = port->fifosize; - spin_lock_irqsave(&port->lock, flags); - while (max_count-- > 0) { ufcon = rd_regl(port, S3C2410_UFCON); ufstat = rd_regl(port, S3C2410_UFSTAT); @@ -654,9 +650,7 @@ static irqreturn_t s3c24xx_serial_rx_chars_pio(void *dev_id) ufcon |= S3C2410_UFCON_RESETRX; wr_regl(port, S3C2410_UFCON, ufcon); rx_enabled(port) = 1; - spin_unlock_irqrestore(&port->lock, - flags); - goto out; + return; } continue; } @@ -702,10 +696,19 @@ static irqreturn_t s3c24xx_serial_rx_chars_pio(void *dev_id) ch, flag); } - spin_unlock_irqrestore(&port->lock, flags); tty_flip_buffer_push(&port->state->port); +} + +static irqreturn_t s3c24xx_serial_rx_chars_pio(void *dev_id) +{ + struct s3c24xx_uart_port *ourport = dev_id; + struct uart_port *port = &ourport->port; + unsigned long flags; + + spin_lock_irqsave(&port->lock, flags); + s3c24xx_serial_rx_drain_fifo(ourport); + spin_unlock_irqrestore(&port->lock, flags); -out: return IRQ_HANDLED; } |