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Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/serial_ks8695.c61
1 files changed, 52 insertions, 9 deletions
diff --git a/drivers/serial/serial_ks8695.c b/drivers/serial/serial_ks8695.c
index b9cbfc87f61..998e89dc5aa 100644
--- a/drivers/serial/serial_ks8695.c
+++ b/drivers/serial/serial_ks8695.c
@@ -63,8 +63,44 @@
#define UART_DUMMY_LSR_RX 0x100
#define UART_PORT_SIZE (KS8695_USR - KS8695_URRB + 4)
-#define tx_enabled(port) ((port)->unused[0])
-#define rx_enabled(port) ((port)->unused[1])
+static inline int tx_enabled(struct uart_port *port)
+{
+ return port->unused[0] & 1;
+}
+
+static inline int rx_enabled(struct uart_port *port)
+{
+ return port->unused[0] & 2;
+}
+
+static inline int ms_enabled(struct uart_port *port)
+{
+ return port->unused[0] & 4;
+}
+
+static inline void ms_enable(struct uart_port *port, int enabled)
+{
+ if(enabled)
+ port->unused[0] |= 4;
+ else
+ port->unused[0] &= ~4;
+}
+
+static inline void rx_enable(struct uart_port *port, int enabled)
+{
+ if(enabled)
+ port->unused[0] |= 2;
+ else
+ port->unused[0] &= ~2;
+}
+
+static inline void tx_enable(struct uart_port *port, int enabled)
+{
+ if(enabled)
+ port->unused[0] |= 1;
+ else
+ port->unused[0] &= ~1;
+}
#ifdef SUPPORT_SYSRQ
@@ -75,7 +111,7 @@ static void ks8695uart_stop_tx(struct uart_port *port)
{
if (tx_enabled(port)) {
disable_irq(KS8695_IRQ_UART_TX);
- tx_enabled(port) = 0;
+ tx_enable(port, 0);
}
}
@@ -83,7 +119,7 @@ static void ks8695uart_start_tx(struct uart_port *port)
{
if (!tx_enabled(port)) {
enable_irq(KS8695_IRQ_UART_TX);
- tx_enabled(port) = 1;
+ tx_enable(port, 1);
}
}
@@ -91,18 +127,24 @@ static void ks8695uart_stop_rx(struct uart_port *port)
{
if (rx_enabled(port)) {
disable_irq(KS8695_IRQ_UART_RX);
- rx_enabled(port) = 0;
+ rx_enable(port, 0);
}
}
static void ks8695uart_enable_ms(struct uart_port *port)
{
- enable_irq(KS8695_IRQ_UART_MODEM_STATUS);
+ if (!ms_enabled(port)) {
+ enable_irq(KS8695_IRQ_UART_MODEM_STATUS);
+ ms_enable(port,1);
+ }
}
static void ks8695uart_disable_ms(struct uart_port *port)
{
- disable_irq(KS8695_IRQ_UART_MODEM_STATUS);
+ if (ms_enabled(port)) {
+ disable_irq(KS8695_IRQ_UART_MODEM_STATUS);
+ ms_enable(port,0);
+ }
}
static irqreturn_t ks8695uart_rx_chars(int irq, void *dev_id)
@@ -285,8 +327,9 @@ static int ks8695uart_startup(struct uart_port *port)
int retval;
set_irq_flags(KS8695_IRQ_UART_TX, IRQF_VALID | IRQF_NOAUTOEN);
- tx_enabled(port) = 0;
- rx_enabled(port) = 1;
+ tx_enable(port, 0);
+ rx_enable(port, 1);
+ ms_enable(port, 1);
/*
* Allocate the IRQ