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[POWERPC] of_serial: add port type checking

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Currently, of_serial driver supports only 8250 compatible ports, but
prepares that others can easily be added.  Yet unregister routine
assumes port is 8250.  This corrects unregister routine to check
port type.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Ishizaki Kou 2007-05-31 19:33:04 +10:00 committed by Paul Mackerras
parent 1558f9b44e
commit e34b9c94b6
1 changed files with 24 additions and 3 deletions
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27
drivers/serial/of_serial.c
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@ -17,6 +17,11 @@
#include <asm/of_platform.h>
#include <asm/prom.h>
struct of_serial_info {
int type;
int line;
};
/*
* Fill a struct uart_port for a given device node
*/
@ -62,6 +67,7 @@ static int __devinit of_platform_serial_setup(struct of_device *ofdev,
static int __devinit of_platform_serial_probe(struct of_device *ofdev,
const struct of_device_id *id)
{
struct of_serial_info *info;
struct uart_port port;
int port_type;
int ret;
@ -69,6 +75,10 @@ static int __devinit of_platform_serial_probe(struct of_device *ofdev,
if (of_find_property(ofdev->node, "used-by-rtas", NULL))
return -EBUSY;
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (info == NULL)
return -ENOMEM;
port_type = (unsigned long)id->data;
ret = of_platform_serial_setup(ofdev, port_type, &port);
if (ret)
@ -88,9 +98,12 @@ static int __devinit of_platform_serial_probe(struct of_device *ofdev,
if (ret < 0)
goto out;
ofdev->dev.driver_data = (void *)(unsigned long)ret;
info->type = port_type;
info->line = ret;
ofdev->dev.driver_data = info;
return 0;
out:
kfree(info);
irq_dispose_mapping(port.irq);
return ret;
}
@ -100,8 +113,16 @@ out:
*/
static int of_platform_serial_remove(struct of_device *ofdev)
{
int line = (unsigned long)ofdev->dev.driver_data;
serial8250_unregister_port(line);
struct of_serial_info *info = ofdev->dev.driver_data;
switch (info->type) {
case PORT_8250 ... PORT_MAX_8250:
serial8250_unregister_port(info->line);
break;
default:
/* need to add code for these */
break;
}
kfree(info);
return 0;
}