diff options
Diffstat (limited to 'drivers/serial/altera_uart.c')
| -rw-r--r-- | drivers/serial/altera_uart.c | 23 |
1 files changed, 8 insertions, 15 deletions
diff --git a/drivers/serial/altera_uart.c b/drivers/serial/altera_uart.c index b1609cca0ec..7d6afc9755d 100644 --- a/drivers/serial/altera_uart.c +++ b/drivers/serial/altera_uart.c @@ -391,31 +391,24 @@ int __init early_altera_uart_setup(struct altera_uart_platform_uart *platp) return 0; } -static void altera_uart_console_putc(struct console *co, const char c) +static void altera_uart_console_putc(struct uart_port *port, const char c) { - struct uart_port *port = &(altera_uart_ports + co->index)->port; - int i; + while (!(readl(port->membase + ALTERA_UART_STATUS_REG) & + ALTERA_UART_STATUS_TRDY_MSK)) + cpu_relax(); - for (i = 0; i < 0x10000; i++) { - if (readl(port->membase + ALTERA_UART_STATUS_REG) & - ALTERA_UART_STATUS_TRDY_MSK) - break; - } writel(c, port->membase + ALTERA_UART_TXDATA_REG); - for (i = 0; i < 0x10000; i++) { - if (readl(port->membase + ALTERA_UART_STATUS_REG) & - ALTERA_UART_STATUS_TRDY_MSK) - break; - } } static void altera_uart_console_write(struct console *co, const char *s, unsigned int count) { + struct uart_port *port = &(altera_uart_ports + co->index)->port; + for (; count; count--, s++) { - altera_uart_console_putc(co, *s); + altera_uart_console_putc(port, *s); if (*s == '\n') - altera_uart_console_putc(co, '\r'); + altera_uart_console_putc(port, '\r'); } } |