staging: Use GFP_ATOMIC when a lock is held

[safe/jmp/linux-2.6] / drivers / serial / of_serial.c

diff --git a/drivers/serial/of_serial.c b/drivers/serial/of_serial.c
index a64d858..a48d908 100644 (file)
--- a/drivers/serial/of_serial.c
+++ b/drivers/serial/of_serial.c
@@ -11,10 +11,12 @@
  */
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/serial_core.h>
 #include <linux/serial_8250.h>
+#include <linux/of_platform.h>
+#include <linux/nwpserial.h>
 
-#include <asm/of_platform.h>
 #include <asm/prom.h>
 
 struct of_serial_info {
@@ -29,9 +31,10 @@ static int __devinit of_platform_serial_setup(struct of_device *ofdev,
                                        int type, struct uart_port *port)
 {
        struct resource resource;
-       struct device_node *np = ofdev->node;
+       struct device_node *np = ofdev->dev.of_node;
        const unsigned int *clk, *spd;
-       int ret;
+       const u32 *prop;
+       int ret, prop_size;
 
        memset(port, 0, sizeof *port);
        spd = of_get_property(np, "current-speed", NULL);
@@ -49,14 +52,27 @@ static int __devinit of_platform_serial_setup(struct of_device *ofdev,
 
        spin_lock_init(&port->lock);
        port->mapbase = resource.start;
+
+       /* Check for shifted address mapping */
+       prop = of_get_property(np, "reg-offset", &prop_size);
+       if (prop && (prop_size == sizeof(u32)))
+               port->mapbase += *prop;
+
+       /* Check for registers offset within the devices address range */
+       prop = of_get_property(np, "reg-shift", &prop_size);
+       if (prop && (prop_size == sizeof(u32)))
+               port->regshift = *prop;
+
        port->irq = irq_of_parse_and_map(np, 0);
        port->iotype = UPIO_MEM;
        port->type = type;
        port->uartclk = *clk;
        port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP
-               | UPF_FIXED_PORT;
+               | UPF_FIXED_PORT | UPF_FIXED_TYPE;
        port->dev = &ofdev->dev;
-       port->custom_divisor = *clk / (16 * (*spd));
+       /* If current-speed was set, then try not to change it. */
+       if (spd)
+               port->custom_divisor = *clk / (16 * (*spd));
 
        return 0;
 }
@@ -72,7 +88,7 @@ static int __devinit of_platform_serial_probe(struct of_device *ofdev,
        int port_type;
        int ret;
 
-       if (of_find_property(ofdev->node, "used-by-rtas", NULL))
+       if (of_find_property(ofdev->dev.of_node, "used-by-rtas", NULL))
                return -EBUSY;
 
        info = kmalloc(sizeof(*info), GFP_KERNEL);
@@ -85,9 +101,16 @@ static int __devinit of_platform_serial_probe(struct of_device *ofdev,
                goto out;
 
        switch (port_type) {
+#ifdef CONFIG_SERIAL_8250
        case PORT_8250 ... PORT_MAX_8250:
                ret = serial8250_register_port(&port);
                break;
+#endif
+#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
+       case PORT_NWPSERIAL:
+               ret = nwpserial_register_port(&port);
+               break;
+#endif
        default:
                /* need to add code for these */
        case PORT_UNKNOWN:
@@ -100,7 +123,7 @@ static int __devinit of_platform_serial_probe(struct of_device *ofdev,
 
        info->type = port_type;
        info->line = ret;
-       ofdev->dev.driver_data = info;
+       dev_set_drvdata(&ofdev->dev, info);
        return 0;
 out:
        kfree(info);
@@ -113,11 +136,18 @@ out:
  */
 static int of_platform_serial_remove(struct of_device *ofdev)
 {
-       struct of_serial_info *info = ofdev->dev.driver_data;
+       struct of_serial_info *info = dev_get_drvdata(&ofdev->dev);
        switch (info->type) {
+#ifdef CONFIG_SERIAL_8250
        case PORT_8250 ... PORT_MAX_8250:
                serial8250_unregister_port(info->line);
                break;
+#endif
+#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
+       case PORT_NWPSERIAL:
+               nwpserial_unregister_port(info->line);
+               break;
+#endif
        default:
                /* need to add code for these */
                break;
@@ -132,18 +162,26 @@ static int of_platform_serial_remove(struct of_device *ofdev)
 static struct of_device_id __devinitdata of_platform_serial_table[] = {
        { .type = "serial", .compatible = "ns8250",   .data = (void *)PORT_8250, },
        { .type = "serial", .compatible = "ns16450",  .data = (void *)PORT_16450, },
+       { .type = "serial", .compatible = "ns16550a", .data = (void *)PORT_16550A, },
        { .type = "serial", .compatible = "ns16550",  .data = (void *)PORT_16550, },
        { .type = "serial", .compatible = "ns16750",  .data = (void *)PORT_16750, },
+       { .type = "serial", .compatible = "ns16850",  .data = (void *)PORT_16850, },
+#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
+       { .type = "serial", .compatible = "ibm,qpace-nwp-serial",
+                                       .data = (void *)PORT_NWPSERIAL, },
+#endif
        { .type = "serial",                           .data = (void *)PORT_UNKNOWN, },
        { /* end of list */ },
 };
 
-static struct of_platform_driver __devinitdata of_platform_serial_driver = {
-       .owner = THIS_MODULE,
-       .name = "of_serial",
+static struct of_platform_driver of_platform_serial_driver = {
+       .driver = {
+               .name = "of_serial",
+               .owner = THIS_MODULE,
+               .of_match_table = of_platform_serial_table,
+       },
        .probe = of_platform_serial_probe,
        .remove = of_platform_serial_remove,
-       .match_table = of_platform_serial_table,
 };
 
 static int __init of_platform_serial_init(void)