diff options
Diffstat (limited to 'drivers/serial/serial_txx9.c')
| -rw-r--r-- | drivers/serial/serial_txx9.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/serial/serial_txx9.c b/drivers/serial/serial_txx9.c index fdd1f1915a4..ee98a867bc6 100644 --- a/drivers/serial/serial_txx9.c +++ b/drivers/serial/serial_txx9.c @@ -52,6 +52,7 @@ #include <linux/tty_flip.h> #include <linux/serial_core.h> #include <linux/serial.h> +#include <linux/mutex.h> #include <asm/io.h> #include <asm/irq.h> @@ -1018,7 +1019,7 @@ static void serial_txx9_resume_port(int line) uart_resume_port(&serial_txx9_reg, &serial_txx9_ports[line].port); } -static DECLARE_MUTEX(serial_txx9_sem); +static DEFINE_MUTEX(serial_txx9_mutex); /** * serial_txx9_register_port - register a serial port @@ -1037,7 +1038,7 @@ static int __devinit serial_txx9_register_port(struct uart_port *port) struct uart_txx9_port *uart; int ret = -ENOSPC; - down(&serial_txx9_sem); + mutex_lock(&serial_txx9_mutex); for (i = 0; i < UART_NR; i++) { uart = &serial_txx9_ports[i]; if (uart->port.type == PORT_UNKNOWN) @@ -1058,7 +1059,7 @@ static int __devinit serial_txx9_register_port(struct uart_port *port) if (ret == 0) ret = uart->port.line; } - up(&serial_txx9_sem); + mutex_unlock(&serial_txx9_mutex); return ret; } @@ -1073,7 +1074,7 @@ static void __devexit serial_txx9_unregister_port(int line) { struct uart_txx9_port *uart = &serial_txx9_ports[line]; - down(&serial_txx9_sem); + mutex_lock(&serial_txx9_mutex); uart_remove_one_port(&serial_txx9_reg, &uart->port); uart->port.flags = 0; uart->port.type = PORT_UNKNOWN; @@ -1082,7 +1083,7 @@ static void __devexit serial_txx9_unregister_port(int line) uart->port.membase = 0; uart->port.dev = NULL; uart_add_one_port(&serial_txx9_reg, &uart->port); - up(&serial_txx9_sem); + mutex_unlock(&serial_txx9_mutex); } /* |