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-rw-r--r--drivers/serial/suncore.c33
-rw-r--r--drivers/serial/suncore.h3
-rw-r--r--drivers/serial/sunhv.c14
-rw-r--r--drivers/serial/sunsab.c16
-rw-r--r--drivers/serial/sunsu.c16
-rw-r--r--drivers/serial/sunzilog.c41
6 files changed, 58 insertions, 65 deletions
diff --git a/drivers/serial/suncore.c b/drivers/serial/suncore.c
index 70a09a3d5af0..707c5b03bce9 100644
--- a/drivers/serial/suncore.c
+++ b/drivers/serial/suncore.c
@@ -23,11 +23,36 @@
#include "suncore.h"
-int sunserial_current_minor = 64;
+static int sunserial_current_minor = 64;
-EXPORT_SYMBOL(sunserial_current_minor);
+int sunserial_register_minors(struct uart_driver *drv, int count)
+{
+ int err = 0;
+
+ drv->minor = sunserial_current_minor;
+ drv->nr += count;
+ /* Register the driver on the first call */
+ if (drv->nr == count)
+ err = uart_register_driver(drv);
+ if (err == 0) {
+ sunserial_current_minor += count;
+ drv->tty_driver->name_base = drv->minor - 64;
+ }
+ return err;
+}
+EXPORT_SYMBOL(sunserial_register_minors);
+
+void sunserial_unregister_minors(struct uart_driver *drv, int count)
+{
+ drv->nr -= count;
+ sunserial_current_minor -= count;
+
+ if (drv->nr == 0)
+ uart_unregister_driver(drv);
+}
+EXPORT_SYMBOL(sunserial_unregister_minors);
-int sunserial_console_match(struct console *con, struct device_node *dp,
+int __init sunserial_console_match(struct console *con, struct device_node *dp,
struct uart_driver *drv, int line)
{
int off;
@@ -133,8 +158,6 @@ sunserial_console_termios(struct console *con)
con->cflag = cflag;
}
-EXPORT_SYMBOL(sunserial_console_termios);
-
/* Sun serial MOUSE auto baud rate detection. */
static struct mouse_baud_cflag {
int baud;
diff --git a/drivers/serial/suncore.h b/drivers/serial/suncore.h
index 829d7d65d6db..042668aa602e 100644
--- a/drivers/serial/suncore.h
+++ b/drivers/serial/suncore.h
@@ -22,7 +22,8 @@
extern unsigned int suncore_mouse_baud_cflag_next(unsigned int, int *);
extern int suncore_mouse_baud_detection(unsigned char, int);
-extern int sunserial_current_minor;
+extern int sunserial_register_minors(struct uart_driver *, int);
+extern void sunserial_unregister_minors(struct uart_driver *, int);
extern int sunserial_console_match(struct console *, struct device_node *,
struct uart_driver *, int);
diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c
index 8ff900b09811..be0fe152891b 100644
--- a/drivers/serial/sunhv.c
+++ b/drivers/serial/sunhv.c
@@ -562,16 +562,10 @@ static int __devinit hv_probe(struct of_device *op, const struct of_device_id *m
port->dev = &op->dev;
- sunhv_reg.minor = sunserial_current_minor;
- sunhv_reg.nr = 1;
-
- err = uart_register_driver(&sunhv_reg);
+ err = sunserial_register_minors(&sunhv_reg, 1);
if (err)
goto out_free_con_read_page;
- sunhv_reg.tty_driver->name_base = sunhv_reg.minor - 64;
- sunserial_current_minor += 1;
-
sunserial_console_match(&sunhv_console, op->node,
&sunhv_reg, port->line);
@@ -591,8 +585,7 @@ out_remove_port:
uart_remove_one_port(&sunhv_reg, port);
out_unregister_driver:
- sunserial_current_minor -= 1;
- uart_unregister_driver(&sunhv_reg);
+ sunserial_unregister_minors(&sunhv_reg, 1);
out_free_con_read_page:
kfree(con_read_page);
@@ -614,8 +607,7 @@ static int __devexit hv_remove(struct of_device *dev)
uart_remove_one_port(&sunhv_reg, port);
- sunserial_current_minor -= 1;
- uart_unregister_driver(&sunhv_reg);
+ sunserial_unregister_minors(&sunhv_reg, 1);
kfree(port);
sunhv_port = NULL;
diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c
index ff610c23314b..543f93741e6f 100644
--- a/drivers/serial/sunsab.c
+++ b/drivers/serial/sunsab.c
@@ -832,7 +832,6 @@ static struct uart_driver sunsab_reg = {
};
static struct uart_sunsab_port *sunsab_ports;
-static int num_channels;
#ifdef CONFIG_SERIAL_SUNSAB_CONSOLE
@@ -1102,8 +1101,8 @@ static int __init sunsab_init(void)
{
struct device_node *dp;
int err;
+ int num_channels = 0;
- num_channels = 0;
for_each_node_by_name(dp, "se")
num_channels += 2;
for_each_node_by_name(dp, "serial") {
@@ -1117,20 +1116,14 @@ static int __init sunsab_init(void)
if (!sunsab_ports)
return -ENOMEM;
- sunsab_reg.minor = sunserial_current_minor;
- sunsab_reg.nr = num_channels;
sunsab_reg.cons = SUNSAB_CONSOLE();
-
- err = uart_register_driver(&sunsab_reg);
+ err = sunserial_register_minors(&sunsab_reg, num_channels);
if (err) {
kfree(sunsab_ports);
sunsab_ports = NULL;
return err;
}
-
- sunsab_reg.tty_driver->name_base = sunsab_reg.minor - 64;
- sunserial_current_minor += num_channels;
}
return of_register_driver(&sab_driver, &of_bus_type);
@@ -1139,9 +1132,8 @@ static int __init sunsab_init(void)
static void __exit sunsab_exit(void)
{
of_unregister_driver(&sab_driver);
- if (num_channels) {
- sunserial_current_minor -= num_channels;
- uart_unregister_driver(&sunsab_reg);
+ if (sunsab_reg.nr) {
+ sunserial_unregister_minors(&sunsab_reg, sunsab_reg.nr);
}
kfree(sunsab_ports);
diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c
index e074943feff5..4e2302d43ab1 100644
--- a/drivers/serial/sunsu.c
+++ b/drivers/serial/sunsu.c
@@ -1528,14 +1528,12 @@ static struct of_platform_driver su_driver = {
.remove = __devexit_p(su_remove),
};
-static int num_uart;
-
static int __init sunsu_init(void)
{
struct device_node *dp;
int err;
+ int num_uart = 0;
- num_uart = 0;
for_each_node_by_name(dp, "su") {
if (su_get_type(dp) == SU_PORT_PORT)
num_uart++;
@@ -1552,26 +1550,22 @@ static int __init sunsu_init(void)
}
if (num_uart) {
- sunsu_reg.minor = sunserial_current_minor;
- sunsu_reg.nr = num_uart;
- err = uart_register_driver(&sunsu_reg);
+ err = sunserial_register_minors(&sunsu_reg, num_uart);
if (err)
return err;
- sunsu_reg.tty_driver->name_base = sunsu_reg.minor - 64;
- sunserial_current_minor += num_uart;
}
err = of_register_driver(&su_driver, &of_bus_type);
if (err && num_uart)
- uart_unregister_driver(&sunsu_reg);
+ sunserial_unregister_minors(&sunsu_reg, num_uart);
return err;
}
static void __exit sunsu_exit(void)
{
- if (num_uart)
- uart_unregister_driver(&sunsu_reg);
+ if (sunsu_reg.nr)
+ sunserial_unregister_minors(&sunsu_reg, sunsu_reg.nr);
}
module_init(sunsu_init);
diff --git a/drivers/serial/sunzilog.c b/drivers/serial/sunzilog.c
index 283bef0d24cb..cb2e40506379 100644
--- a/drivers/serial/sunzilog.c
+++ b/drivers/serial/sunzilog.c
@@ -63,10 +63,6 @@
readb(&((__channel)->control))
#endif
-static int num_sunzilog;
-#define NUM_SUNZILOG num_sunzilog
-#define NUM_CHANNELS (NUM_SUNZILOG * 2)
-
#define ZS_CLOCK 4915200 /* Zilog input clock rate. */
#define ZS_CLOCK_DIVISOR 16 /* Divisor this driver uses. */
@@ -1031,18 +1027,19 @@ static struct uart_driver sunzilog_reg = {
.major = TTY_MAJOR,
};
-static int __init sunzilog_alloc_tables(void)
+static int __init sunzilog_alloc_tables(int num_sunzilog)
{
struct uart_sunzilog_port *up;
unsigned long size;
+ int num_channels = num_sunzilog * 2;
int i;
- size = NUM_CHANNELS * sizeof(struct uart_sunzilog_port);
+ size = num_channels * sizeof(struct uart_sunzilog_port);
sunzilog_port_table = kzalloc(size, GFP_KERNEL);
if (!sunzilog_port_table)
return -ENOMEM;
- for (i = 0; i < NUM_CHANNELS; i++) {
+ for (i = 0; i < num_channels; i++) {
up = &sunzilog_port_table[i];
spin_lock_init(&up->port.lock);
@@ -1050,13 +1047,13 @@ static int __init sunzilog_alloc_tables(void)
if (i == 0)
sunzilog_irq_chain = up;
- if (i < NUM_CHANNELS - 1)
+ if (i < num_channels - 1)
up->next = up + 1;
else
up->next = NULL;
}
- size = NUM_SUNZILOG * sizeof(struct zilog_layout __iomem *);
+ size = num_sunzilog * sizeof(struct zilog_layout __iomem *);
sunzilog_chip_regs = kzalloc(size, GFP_KERNEL);
if (!sunzilog_chip_regs) {
kfree(sunzilog_port_table);
@@ -1496,34 +1493,28 @@ static int __init sunzilog_init(void)
struct device_node *dp;
int err, uart_count;
int num_keybms;
+ int num_sunzilog = 0;
- NUM_SUNZILOG = 0;
num_keybms = 0;
for_each_node_by_name(dp, "zs") {
- NUM_SUNZILOG++;
+ num_sunzilog++;
if (of_find_property(dp, "keyboard", NULL))
num_keybms++;
}
uart_count = 0;
- if (NUM_SUNZILOG) {
+ if (num_sunzilog) {
int uart_count;
- err = sunzilog_alloc_tables();
+ err = sunzilog_alloc_tables(num_sunzilog);
if (err)
goto out;
- uart_count = (NUM_SUNZILOG * 2) - (2 * num_keybms);
+ uart_count = (num_sunzilog * 2) - (2 * num_keybms);
- sunzilog_reg.nr = uart_count;
- sunzilog_reg.minor = sunserial_current_minor;
- err = uart_register_driver(&sunzilog_reg);
+ err = sunserial_register_minors(&sunzilog_reg, uart_count);
if (err)
goto out_free_tables;
-
- sunzilog_reg.tty_driver->name_base = sunzilog_reg.minor - 64;
-
- sunserial_current_minor += uart_count;
}
err = of_register_driver(&zs_driver, &of_bus_type);
@@ -1557,8 +1548,8 @@ out_unregister_driver:
of_unregister_driver(&zs_driver);
out_unregister_uart:
- if (NUM_SUNZILOG) {
- uart_unregister_driver(&sunzilog_reg);
+ if (num_sunzilog) {
+ sunserial_unregister_minors(&sunzilog_reg, num_sunzilog);
sunzilog_reg.cons = NULL;
}
@@ -1590,8 +1581,8 @@ static void __exit sunzilog_exit(void)
zilog_irq = -1;
}
- if (NUM_SUNZILOG) {
- uart_unregister_driver(&sunzilog_reg);
+ if (sunzilog_reg.nr) {
+ sunserial_unregister_minors(&sunzilog_reg, sunzilog_reg.nr);
sunzilog_free_tables();
}
}
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