diff options
Diffstat (limited to 'drivers/tty/serial/uartlite.c')
| -rw-r--r-- | drivers/tty/serial/uartlite.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c index 5f90ef24d475..9fc22f40796e 100644 --- a/drivers/tty/serial/uartlite.c +++ b/drivers/tty/serial/uartlite.c @@ -250,11 +250,6 @@ static void ulite_stop_rx(struct uart_port *port) | ULITE_STATUS_FRAME | ULITE_STATUS_OVERRUN; } -static void ulite_enable_ms(struct uart_port *port) -{ - /* N/A */ -} - static void ulite_break_ctl(struct uart_port *port, int ctl) { /* N/A */ @@ -395,7 +390,6 @@ static struct uart_ops ulite_ops = { .stop_tx = ulite_stop_tx, .start_tx = ulite_start_tx, .stop_rx = ulite_stop_rx, - .enable_ms = ulite_enable_ms, .break_ctl = ulite_break_ctl, .startup = ulite_startup, .shutdown = ulite_shutdown, @@ -418,14 +412,23 @@ static struct uart_ops ulite_ops = { #ifdef CONFIG_SERIAL_UARTLITE_CONSOLE static void ulite_console_wait_tx(struct uart_port *port) { - int i; u8 val; - - /* Spin waiting for TX fifo to have space available */ - for (i = 0; i < 100000; i++) { + unsigned long timeout; + + /* + * Spin waiting for TX fifo to have space available. + * When using the Microblaze Debug Module this can take up to 1s + */ + timeout = jiffies + msecs_to_jiffies(1000); + while (1) { val = uart_in32(ULITE_STATUS, port); if ((val & ULITE_STATUS_TXFULL) == 0) break; + if (time_after(jiffies, timeout)) { + dev_warn(port->dev, + "timeout waiting for TX buffer empty\n"); + break; + } cpu_relax(); } } |
