diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
commit | d635711daa98be86d4c7fd01499c34f566b54ccb (patch) | |
tree | aa5cc3760a27c3d57146498cb82fa549547de06c /drivers/tty/serial/8250/8250_core.c | |
parent | c91265cd0efb83778f015b4d4b1129bd2cfd075e (diff) |
Linux-libre 4.6.2-gnu
Diffstat (limited to 'drivers/tty/serial/8250/8250_core.c')
-rw-r--r-- | drivers/tty/serial/8250/8250_core.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 279a842cd..11ccfa00c 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -597,6 +597,7 @@ static void univ8250_console_write(struct console *co, const char *s, static int univ8250_console_setup(struct console *co, char *options) { struct uart_port *port; + int retval; /* * Check whether an invalid uart number has been specified, and @@ -609,7 +610,10 @@ static int univ8250_console_setup(struct console *co, char *options) /* link port to console */ port->cons = co; - return serial8250_console_setup(port, options, false); + retval = serial8250_console_setup(port, options, false); + if (retval != 0) + port->cons = NULL; + return retval; } /** @@ -687,7 +691,7 @@ static int __init univ8250_console_init(void) } console_initcall(univ8250_console_init); -#define SERIAL8250_CONSOLE &univ8250_console +#define SERIAL8250_CONSOLE (&univ8250_console) #else #define SERIAL8250_CONSOLE NULL #endif @@ -764,6 +768,7 @@ void serial8250_suspend_port(int line) uart_suspend_port(&serial8250_reg, port); } +EXPORT_SYMBOL(serial8250_suspend_port); /** * serial8250_resume_port - resume one serial port @@ -789,6 +794,7 @@ void serial8250_resume_port(int line) } uart_resume_port(&serial8250_reg, port); } +EXPORT_SYMBOL(serial8250_resume_port); /* * Register a set of serial devices attached to a platform device. The @@ -1068,6 +1074,15 @@ void serial8250_unregister_port(int line) struct uart_8250_port *uart = &serial8250_ports[line]; mutex_lock(&serial_mutex); + + if (uart->em485) { + unsigned long flags; + + spin_lock_irqsave(&uart->port.lock, flags); + serial8250_em485_destroy(uart); + spin_unlock_irqrestore(&uart->port.lock, flags); + } + uart_remove_one_port(&serial8250_reg, &uart->port); if (serial8250_isa_devs) { uart->port.flags &= ~UPF_BOOT_AUTOCONF; @@ -1093,9 +1108,8 @@ static int __init serial8250_init(void) serial8250_isa_init_ports(); - printk(KERN_INFO "Serial: 8250/16550 driver, " - "%d ports, IRQ sharing %sabled\n", nr_uarts, - share_irqs ? "en" : "dis"); + pr_info("Serial: 8250/16550 driver, %d ports, IRQ sharing %sabled\n", + nr_uarts, share_irqs ? "en" : "dis"); #ifdef CONFIG_SPARC ret = sunserial_register_minors(&serial8250_reg, UART_NR); @@ -1168,15 +1182,11 @@ static void __exit serial8250_exit(void) module_init(serial8250_init); module_exit(serial8250_exit); -EXPORT_SYMBOL(serial8250_suspend_port); -EXPORT_SYMBOL(serial8250_resume_port); - MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Generic 8250/16x50 serial driver"); module_param(share_irqs, uint, 0644); -MODULE_PARM_DESC(share_irqs, "Share IRQs with other non-8250/16x50 devices" - " (unsafe)"); +MODULE_PARM_DESC(share_irqs, "Share IRQs with other non-8250/16x50 devices (unsafe)"); module_param(nr_uarts, uint, 0644); MODULE_PARM_DESC(nr_uarts, "Maximum number of UARTs supported. (1-" __MODULE_STRING(CONFIG_SERIAL_8250_NR_UARTS) ")"); |