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path: root/drivers/serial/8250.c
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Diffstat (limited to 'drivers/serial/8250.c')
-rw-r--r--drivers/serial/8250.c22
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index c3e37c8e7e26..a81ff7bc5fa1 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -83,6 +83,9 @@ static unsigned int skip_txen_test; /* force skip of txen test at init time */
#define PASS_LIMIT 256
+#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
+
+
/*
* We default to IRQ0 for the "no irq" hack. Some
* machine types want others as well - they're free
@@ -1214,12 +1217,6 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
}
#endif
-#ifdef CONFIG_SERIAL_8250_AU1X00
- /* if access method is AU, it is a 16550 with a quirk */
- if (up->port.type == PORT_16550A && up->port.iotype == UPIO_AU)
- up->bugs |= UART_BUG_NOMSR;
-#endif
-
serial_outp(up, UART_LCR, save_lcr);
if (up->capabilities != uart_config[up->port.type].flags) {
@@ -1792,7 +1789,7 @@ static unsigned int serial8250_tx_empty(struct uart_port *port)
up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS;
spin_unlock_irqrestore(&up->port.lock, flags);
- return lsr & UART_LSR_TEMT ? TIOCSER_TEMT : 0;
+ return (lsr & BOTH_EMPTY) == BOTH_EMPTY ? TIOCSER_TEMT : 0;
}
static unsigned int serial8250_get_mctrl(struct uart_port *port)
@@ -1850,8 +1847,6 @@ static void serial8250_break_ctl(struct uart_port *port, int break_state)
spin_unlock_irqrestore(&up->port.lock, flags);
}
-#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
-
/*
* Wait for transmitter & holding register to empty
*/
@@ -2427,7 +2422,7 @@ serial8250_pm(struct uart_port *port, unsigned int state,
static unsigned int serial8250_port_size(struct uart_8250_port *pt)
{
if (pt->port.iotype == UPIO_AU)
- return 0x100000;
+ return 0x1000;
#ifdef CONFIG_ARCH_OMAP
if (is_omap_port(pt))
return 0x16 << pt->port.regshift;
@@ -2584,6 +2579,13 @@ static void serial8250_config_port(struct uart_port *port, int flags)
if (flags & UART_CONFIG_TYPE)
autoconfig(up, probeflags);
+
+#ifdef CONFIG_SERIAL_8250_AU1X00
+ /* if access method is AU, it is a 16550 with a quirk */
+ if (up->port.type == PORT_16550A && up->port.iotype == UPIO_AU)
+ up->bugs |= UART_BUG_NOMSR;
+#endif
+
if (up->port.type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ)
autoconfig_irq(up);