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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-12-12 12:52:12 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-12-12 12:52:12 -0500
commitda8cadb31b82c9d41fc593c8deab6aa20b162d6b (patch)
tree5640a34aa485f254de503a17833046645ade47f6 /drivers/serial/sunzilog.c
parent02ec96be2b45d9f2712687ad107038ef390b24c2 (diff)
parent0de56d1ab83323d604d95ca193dcbd28388dbabb (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Fix endless loop in cheetah_xcall_deliver(). [SERIAL] sparc: Infrastructure to fix section mismatch bugs.
Diffstat (limited to 'drivers/serial/sunzilog.c')
-rw-r--r--drivers/serial/sunzilog.c41
1 files changed, 16 insertions, 25 deletions
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 @@
63 readb(&((__channel)->control)) 63 readb(&((__channel)->control))
64#endif 64#endif
65 65
66static int num_sunzilog;
67#define NUM_SUNZILOG num_sunzilog
68#define NUM_CHANNELS (NUM_SUNZILOG * 2)
69
70#define ZS_CLOCK 4915200 /* Zilog input clock rate. */ 66#define ZS_CLOCK 4915200 /* Zilog input clock rate. */
71#define ZS_CLOCK_DIVISOR 16 /* Divisor this driver uses. */ 67#define ZS_CLOCK_DIVISOR 16 /* Divisor this driver uses. */
72 68
@@ -1031,18 +1027,19 @@ static struct uart_driver sunzilog_reg = {
1031 .major = TTY_MAJOR, 1027 .major = TTY_MAJOR,
1032}; 1028};
1033 1029
1034static int __init sunzilog_alloc_tables(void) 1030static int __init sunzilog_alloc_tables(int num_sunzilog)
1035{ 1031{
1036 struct uart_sunzilog_port *up; 1032 struct uart_sunzilog_port *up;
1037 unsigned long size; 1033 unsigned long size;
1034 int num_channels = num_sunzilog * 2;
1038 int i; 1035 int i;
1039 1036
1040 size = NUM_CHANNELS * sizeof(struct uart_sunzilog_port); 1037 size = num_channels * sizeof(struct uart_sunzilog_port);
1041 sunzilog_port_table = kzalloc(size, GFP_KERNEL); 1038 sunzilog_port_table = kzalloc(size, GFP_KERNEL);
1042 if (!sunzilog_port_table) 1039 if (!sunzilog_port_table)
1043 return -ENOMEM; 1040 return -ENOMEM;
1044 1041
1045 for (i = 0; i < NUM_CHANNELS; i++) { 1042 for (i = 0; i < num_channels; i++) {
1046 up = &sunzilog_port_table[i]; 1043 up = &sunzilog_port_table[i];
1047 1044
1048 spin_lock_init(&up->port.lock); 1045 spin_lock_init(&up->port.lock);
@@ -1050,13 +1047,13 @@ static int __init sunzilog_alloc_tables(void)
1050 if (i == 0) 1047 if (i == 0)
1051 sunzilog_irq_chain = up; 1048 sunzilog_irq_chain = up;
1052 1049
1053 if (i < NUM_CHANNELS - 1) 1050 if (i < num_channels - 1)
1054 up->next = up + 1; 1051 up->next = up + 1;
1055 else 1052 else
1056 up->next = NULL; 1053 up->next = NULL;
1057 } 1054 }
1058 1055
1059 size = NUM_SUNZILOG * sizeof(struct zilog_layout __iomem *); 1056 size = num_sunzilog * sizeof(struct zilog_layout __iomem *);
1060 sunzilog_chip_regs = kzalloc(size, GFP_KERNEL); 1057 sunzilog_chip_regs = kzalloc(size, GFP_KERNEL);
1061 if (!sunzilog_chip_regs) { 1058 if (!sunzilog_chip_regs) {
1062 kfree(sunzilog_port_table); 1059 kfree(sunzilog_port_table);
@@ -1496,34 +1493,28 @@ static int __init sunzilog_init(void)
1496 struct device_node *dp; 1493 struct device_node *dp;
1497 int err, uart_count; 1494 int err, uart_count;
1498 int num_keybms; 1495 int num_keybms;
1496 int num_sunzilog = 0;
1499 1497
1500 NUM_SUNZILOG = 0;
1501 num_keybms = 0; 1498 num_keybms = 0;
1502 for_each_node_by_name(dp, "zs") { 1499 for_each_node_by_name(dp, "zs") {
1503 NUM_SUNZILOG++; 1500 num_sunzilog++;
1504 if (of_find_property(dp, "keyboard", NULL)) 1501 if (of_find_property(dp, "keyboard", NULL))
1505 num_keybms++; 1502 num_keybms++;
1506 } 1503 }
1507 1504
1508 uart_count = 0; 1505 uart_count = 0;
1509 if (NUM_SUNZILOG) { 1506 if (num_sunzilog) {
1510 int uart_count; 1507 int uart_count;
1511 1508
1512 err = sunzilog_alloc_tables(); 1509 err = sunzilog_alloc_tables(num_sunzilog);
1513 if (err) 1510 if (err)
1514 goto out; 1511 goto out;
1515 1512
1516 uart_count = (NUM_SUNZILOG * 2) - (2 * num_keybms); 1513 uart_count = (num_sunzilog * 2) - (2 * num_keybms);
1517 1514
1518 sunzilog_reg.nr = uart_count; 1515 err = sunserial_register_minors(&sunzilog_reg, uart_count);
1519 sunzilog_reg.minor = sunserial_current_minor;
1520 err = uart_register_driver(&sunzilog_reg);
1521 if (err) 1516 if (err)
1522 goto out_free_tables; 1517 goto out_free_tables;
1523
1524 sunzilog_reg.tty_driver->name_base = sunzilog_reg.minor - 64;
1525
1526 sunserial_current_minor += uart_count;
1527 } 1518 }
1528 1519
1529 err = of_register_driver(&zs_driver, &of_bus_type); 1520 err = of_register_driver(&zs_driver, &of_bus_type);
@@ -1557,8 +1548,8 @@ out_unregister_driver:
1557 of_unregister_driver(&zs_driver); 1548 of_unregister_driver(&zs_driver);
1558 1549
1559out_unregister_uart: 1550out_unregister_uart:
1560 if (NUM_SUNZILOG) { 1551 if (num_sunzilog) {
1561 uart_unregister_driver(&sunzilog_reg); 1552 sunserial_unregister_minors(&sunzilog_reg, num_sunzilog);
1562 sunzilog_reg.cons = NULL; 1553 sunzilog_reg.cons = NULL;
1563 } 1554 }
1564 1555
@@ -1590,8 +1581,8 @@ static void __exit sunzilog_exit(void)
1590 zilog_irq = -1; 1581 zilog_irq = -1;
1591 } 1582 }
1592 1583
1593 if (NUM_SUNZILOG) { 1584 if (sunzilog_reg.nr) {
1594 uart_unregister_driver(&sunzilog_reg); 1585 sunserial_unregister_minors(&sunzilog_reg, sunzilog_reg.nr);
1595 sunzilog_free_tables(); 1586 sunzilog_free_tables();
1596 } 1587 }
1597} 1588}