static void ulite_console_write(struct console *co, const char *s, unsigned int count) { struct uart_port *port = &ulite_ports[co->index]; unsigned long flags; unsigned int ier; int locked = 1; if (oops_in_progress) { locked = spin_trylock_irqsave(&port->lock, flags); } else spin_lock_irqsave(&port->lock, flags); /* save and disable interrupt */ ier = uart_in32(ULITE_STATUS, port) & ULITE_STATUS_IE; uart_out32(0, ULITE_CONTROL, port); uart_console_write(port, s, count, ulite_console_putchar); ulite_console_wait_tx(port); /* restore interrupt state */ if (ier) uart_out32(ULITE_CONTROL_IE, ULITE_CONTROL, port); if (locked) spin_unlock_irqrestore(&port->lock, flags); }
static void ulite_console_write(struct console *co, const char *s, unsigned int count) { struct uart_port *port = &ulite_ports[co->index]; unsigned long flags; unsigned int ier; int locked = 1; if (oops_in_progress) { locked = spin_trylock_irqsave(&port->lock, flags); } else spin_lock_irqsave(&port->lock, flags); ier = readb(port->membase + ULITE_STATUS) & ULITE_STATUS_IE; writeb(0, port->membase + ULITE_CONTROL); uart_console_write(port, s, count, ulite_console_putchar); ulite_console_wait_tx(port); if (ier) writeb(ULITE_CONTROL_IE, port->membase + ULITE_CONTROL); if (locked) spin_unlock_irqrestore(&port->lock, flags); }
static void ulite_console_putchar(struct uart_port *port, int ch) { ulite_console_wait_tx(port); uart_out32(ch, ULITE_TX, port); }
static void ulite_console_putchar(struct uart_port *port, int ch) { ulite_console_wait_tx(port); writeb(ch, port->membase + ULITE_TX); }