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authorDavid S. Miller <davem@davemloft.net>2008-10-11 15:39:35 -0400
committerDavid S. Miller <davem@davemloft.net>2008-10-11 15:39:35 -0400
commit56c5d900dbb8e042bfad035d18433476931d8f93 (patch)
tree00b793965beeef10db03e0ff021d2d965c410759 /drivers/serial/serial_ks8695.c
parent4dd95b63ae25c5cad6986829b5e8788e9faa0330 (diff)
parentead9d23d803ea3a73766c3cb27bf7563ac8d7266 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: sound/core/memalloc.c
Diffstat (limited to 'drivers/serial/serial_ks8695.c')
-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 b9cbfc87f616..998e89dc5aaf 100644
--- a/drivers/serial/serial_ks8695.c
+++ b/drivers/serial/serial_ks8695.c
@@ -63,8 +63,44 @@
63#define UART_DUMMY_LSR_RX 0x100 63#define UART_DUMMY_LSR_RX 0x100
64#define UART_PORT_SIZE (KS8695_USR - KS8695_URRB + 4) 64#define UART_PORT_SIZE (KS8695_USR - KS8695_URRB + 4)
65 65
66#define tx_enabled(port) ((port)->unused[0]) 66static inline int tx_enabled(struct uart_port *port)
67#define rx_enabled(port) ((port)->unused[1]) 67{
68 return port->unused[0] & 1;
69}
70
71static inline int rx_enabled(struct uart_port *port)
72{
73 return port->unused[0] & 2;
74}
75
76static inline int ms_enabled(struct uart_port *port)
77{
78 return port->unused[0] & 4;
79}
80
81static inline void ms_enable(struct uart_port *port, int enabled)
82{
83 if(enabled)
84 port->unused[0] |= 4;
85 else
86 port->unused[0] &= ~4;
87}
88
89static inline void rx_enable(struct uart_port *port, int enabled)
90{
91 if(enabled)
92 port->unused[0] |= 2;
93 else
94 port->unused[0] &= ~2;
95}
96
97static inline void tx_enable(struct uart_port *port, int enabled)
98{
99 if(enabled)
100 port->unused[0] |= 1;
101 else
102 port->unused[0] &= ~1;
103}
68 104
69 105
70#ifdef SUPPORT_SYSRQ 106#ifdef SUPPORT_SYSRQ
@@ -75,7 +111,7 @@ static void ks8695uart_stop_tx(struct uart_port *port)
75{ 111{
76 if (tx_enabled(port)) { 112 if (tx_enabled(port)) {
77 disable_irq(KS8695_IRQ_UART_TX); 113 disable_irq(KS8695_IRQ_UART_TX);
78 tx_enabled(port) = 0; 114 tx_enable(port, 0);
79 } 115 }
80} 116}
81 117
@@ -83,7 +119,7 @@ static void ks8695uart_start_tx(struct uart_port *port)
83{ 119{
84 if (!tx_enabled(port)) { 120 if (!tx_enabled(port)) {
85 enable_irq(KS8695_IRQ_UART_TX); 121 enable_irq(KS8695_IRQ_UART_TX);
86 tx_enabled(port) = 1; 122 tx_enable(port, 1);
87 } 123 }
88} 124}
89 125
@@ -91,18 +127,24 @@ static void ks8695uart_stop_rx(struct uart_port *port)
91{ 127{
92 if (rx_enabled(port)) { 128 if (rx_enabled(port)) {
93 disable_irq(KS8695_IRQ_UART_RX); 129 disable_irq(KS8695_IRQ_UART_RX);
94 rx_enabled(port) = 0; 130 rx_enable(port, 0);
95 } 131 }
96} 132}
97 133
98static void ks8695uart_enable_ms(struct uart_port *port) 134static void ks8695uart_enable_ms(struct uart_port *port)
99{ 135{
100 enable_irq(KS8695_IRQ_UART_MODEM_STATUS); 136 if (!ms_enabled(port)) {
137 enable_irq(KS8695_IRQ_UART_MODEM_STATUS);
138 ms_enable(port,1);
139 }
101} 140}
102 141
103static void ks8695uart_disable_ms(struct uart_port *port) 142static void ks8695uart_disable_ms(struct uart_port *port)
104{ 143{
105 disable_irq(KS8695_IRQ_UART_MODEM_STATUS); 144 if (ms_enabled(port)) {
145 disable_irq(KS8695_IRQ_UART_MODEM_STATUS);
146 ms_enable(port,0);
147 }
106} 148}
107 149
108static irqreturn_t ks8695uart_rx_chars(int irq, void *dev_id) 150static irqreturn_t ks8695uart_rx_chars(int irq, void *dev_id)
@@ -285,8 +327,9 @@ static int ks8695uart_startup(struct uart_port *port)
285 int retval; 327 int retval;
286 328
287 set_irq_flags(KS8695_IRQ_UART_TX, IRQF_VALID | IRQF_NOAUTOEN); 329 set_irq_flags(KS8695_IRQ_UART_TX, IRQF_VALID | IRQF_NOAUTOEN);
288 tx_enabled(port) = 0; 330 tx_enable(port, 0);
289 rx_enabled(port) = 1; 331 rx_enable(port, 1);
332 ms_enable(port, 1);
290 333
291 /* 334 /*
292 * Allocate the IRQ 335 * Allocate the IRQ