aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/tty/serial/8250/8250_core.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index df8a5aa96bc6..8e3302c6bbff 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -2413,8 +2413,9 @@ static void serial8250_shutdown(struct uart_port *port)
2413 serial8250_do_shutdown(port); 2413 serial8250_do_shutdown(port);
2414} 2414}
2415 2415
2416static unsigned int serial8250_get_divisor(struct uart_port *port, unsigned int baud) 2416static unsigned int serial8250_get_divisor(struct uart_8250_port *up, unsigned int baud)
2417{ 2417{
2418 struct uart_port *port = &up->port;
2418 unsigned int quot; 2419 unsigned int quot;
2419 2420
2420 /* 2421 /*
@@ -2430,6 +2431,12 @@ static unsigned int serial8250_get_divisor(struct uart_port *port, unsigned int
2430 else 2431 else
2431 quot = uart_get_divisor(port, baud); 2432 quot = uart_get_divisor(port, baud);
2432 2433
2434 /*
2435 * Oxford Semi 952 rev B workaround
2436 */
2437 if (up->bugs & UART_BUG_QUOT && (quot & 0xff) == 0)
2438 quot++;
2439
2433 return quot; 2440 return quot;
2434} 2441}
2435 2442
@@ -2478,13 +2485,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
2478 baud = uart_get_baud_rate(port, termios, old, 2485 baud = uart_get_baud_rate(port, termios, old,
2479 port->uartclk / 16 / 0xffff, 2486 port->uartclk / 16 / 0xffff,
2480 port->uartclk / 16); 2487 port->uartclk / 16);
2481 quot = serial8250_get_divisor(port, baud); 2488 quot = serial8250_get_divisor(up, baud);
2482
2483 /*
2484 * Oxford Semi 952 rev B workaround
2485 */
2486 if (up->bugs & UART_BUG_QUOT && (quot & 0xff) == 0)
2487 quot++;
2488 2489
2489 if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) { 2490 if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) {
2490 /* NOTE: If fifo_bug is not set, a user can set RX_trigger. */ 2491 /* NOTE: If fifo_bug is not set, a user can set RX_trigger. */