diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/serial/mux.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/drivers/serial/mux.c b/drivers/serial/mux.c index 8ad1b8c5ec5..ec57a616788 100644 --- a/drivers/serial/mux.c +++ b/drivers/serial/mux.c @@ -51,7 +51,11 @@ #define MUX_NR 256 static unsigned int port_cnt __read_mostly; -static struct uart_port mux_ports[MUX_NR]; +struct mux_port { + struct uart_port port; + int enabled; +}; +static struct mux_port mux_ports[MUX_NR]; static struct uart_driver mux_driver = { .owner = THIS_MODULE, @@ -250,7 +254,7 @@ static void mux_read(struct uart_port *port) */ static int mux_startup(struct uart_port *port) { - mod_timer(&mux_timer, jiffies + MUX_POLL_DELAY); + mux_ports[port->line].enabled = 1; return 0; } @@ -262,6 +266,7 @@ static int mux_startup(struct uart_port *port) */ static void mux_shutdown(struct uart_port *port) { + mux_ports[port->line].enabled = 0; } /** @@ -319,7 +324,7 @@ static int mux_request_port(struct uart_port *port) * @port: Ptr to the uart_port. * @type: Bitmask of required configurations. * - * Perform any autoconfiguration steps for the port. This functino is + * Perform any autoconfiguration steps for the port. This function is * called if the UPF_BOOT_AUTOCONF flag is specified for the port. * [Note: This is required for now because of a bug in the Serial core. * rmk has already submitted a patch to linus, should be available for @@ -357,11 +362,11 @@ static void mux_poll(unsigned long unused) int i; for(i = 0; i < port_cnt; ++i) { - if(!mux_ports[i].info) + if(!mux_ports[i].enabled) continue; - mux_read(&mux_ports[i]); - mux_write(&mux_ports[i]); + mux_read(&mux_ports[i].port); + mux_write(&mux_ports[i].port); } mod_timer(&mux_timer, jiffies + MUX_POLL_DELAY); @@ -456,7 +461,7 @@ static int __init mux_probe(struct parisc_device *dev) } for(i = 0; i < ports; ++i, ++port_cnt) { - port = &mux_ports[port_cnt]; + port = &mux_ports[port_cnt].port; port->iobase = 0; port->mapbase = dev->hpa.start + MUX_OFFSET + (i * MUX_LINE_OFFSET); @@ -484,6 +489,8 @@ static int __init mux_probe(struct parisc_device *dev) #ifdef CONFIG_SERIAL_MUX_CONSOLE register_console(&mux_console); #endif + mod_timer(&mux_timer, jiffies + MUX_POLL_DELAY); + return 0; } @@ -520,9 +527,9 @@ static void __exit mux_exit(void) int i; for (i = 0; i < port_cnt; i++) { - uart_remove_one_port(&mux_driver, &mux_ports[i]); - if (mux_ports[i].membase) - iounmap(mux_ports[i].membase); + uart_remove_one_port(&mux_driver, &mux_ports[i].port); + if (mux_ports[i].port.membase) + iounmap(mux_ports[i].port.membase); } uart_unregister_driver(&mux_driver); |