diff options
Diffstat (limited to 'drivers/tty/serial/nwpserial.c')
| -rw-r--r-- | drivers/tty/serial/nwpserial.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/tty/serial/nwpserial.c b/drivers/tty/serial/nwpserial.c index de173671e3d..693bc6c2561 100644 --- a/drivers/tty/serial/nwpserial.c +++ b/drivers/tty/serial/nwpserial.c @@ -10,11 +10,13 @@ * */ #include <linux/init.h> +#include <linux/export.h> #include <linux/console.h> #include <linux/serial.h> #include <linux/serial_reg.h> #include <linux/serial_core.h> #include <linux/tty.h> +#include <linux/tty_flip.h> #include <linux/irqreturn.h> #include <linux/mutex.h> #include <linux/of_platform.h> @@ -126,7 +128,7 @@ static void nwpserial_config_port(struct uart_port *port, int flags) static irqreturn_t nwpserial_interrupt(int irq, void *dev_id) { struct nwpserial_port *up = dev_id; - struct tty_struct *tty = up->port.state->port.tty; + struct tty_port *port = &up->port.state->port; irqreturn_t ret; unsigned int iir; unsigned char ch; @@ -144,10 +146,13 @@ static irqreturn_t nwpserial_interrupt(int irq, void *dev_id) up->port.icount.rx++; ch = dcr_read(up->dcr_host, UART_RX); if (up->port.ignore_status_mask != NWPSERIAL_STATUS_RXVALID) - tty_insert_flip_char(tty, ch, TTY_NORMAL); + tty_insert_flip_char(port, ch, TTY_NORMAL); } while (dcr_read(up->dcr_host, UART_LSR) & UART_LSR_DR); - tty_flip_buffer_push(tty); + spin_unlock(&up->port.lock); + tty_flip_buffer_push(port); + spin_lock(&up->port.lock); + ret = IRQ_HANDLED; /* clear interrupt */ @@ -197,7 +202,7 @@ static void nwpserial_shutdown(struct uart_port *port) dcr_write(up->dcr_host, UART_IER, up->ier); /* free irq */ - free_irq(up->port.irq, port); + free_irq(up->port.irq, up); } static int nwpserial_verify_port(struct uart_port *port, |