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authorOlaf Hering <olaf@aepfle.de>2008-04-24 23:16:00 +1000
committerPaul Mackerras <paulus@samba.org>2008-05-14 22:31:28 +1000
commit140b932f8cb6cced10b96860651a198b1b89cbb9 (patch)
treeb515aa9982f7eaffd43b994497bff925b2a8b96b /drivers/of
parent9d5f525b86453da921360727112161254accc8c1 (diff)
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[POWERPC] Create modalias file in sysfs for of_platform bus
Create /sys/bus/of_platform/devices/*/modalias file to allow autoloading of modules. Modalias files are already present for many other bus types. This adds also a newline to the devspec files. Also create a devspec file for mac-io devices. They were created as a side effect. Use correct buffer size for mac-io modalias buffer. Tested on iBook1 and Efika. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/device.c36
-rw-r--r--drivers/of/platform.c3
2 files changed, 23 insertions, 16 deletions
diff --git a/drivers/of/device.c b/drivers/of/device.c
index 29681c4..8fbfeee 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -48,16 +48,32 @@ void of_dev_put(struct of_device *dev)
}
EXPORT_SYMBOL(of_dev_put);
-static ssize_t dev_show_devspec(struct device *dev,
+static ssize_t devspec_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct of_device *ofdev;
ofdev = to_of_device(dev);
- return sprintf(buf, "%s", ofdev->node->full_name);
+ return sprintf(buf, "%s\n", ofdev->node->full_name);
}
-static DEVICE_ATTR(devspec, S_IRUGO, dev_show_devspec, NULL);
+static ssize_t modalias_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct of_device *ofdev = to_of_device(dev);
+ ssize_t len = 0;
+
+ len = of_device_get_modalias(ofdev, buf, PAGE_SIZE - 2);
+ buf[len] = '\n';
+ buf[len+1] = 0;
+ return len+1;
+}
+
+struct device_attribute of_platform_device_attrs[] = {
+ __ATTR_RO(devspec),
+ __ATTR_RO(modalias),
+ __ATTR_NULL
+};
/**
* of_release_dev - free an of device structure when all users of it are finished.
@@ -78,25 +94,13 @@ EXPORT_SYMBOL(of_release_dev);
int of_device_register(struct of_device *ofdev)
{
- int rc;
-
BUG_ON(ofdev->node == NULL);
-
- rc = device_register(&ofdev->dev);
- if (rc)
- return rc;
-
- rc = device_create_file(&ofdev->dev, &dev_attr_devspec);
- if (rc)
- device_unregister(&ofdev->dev);
-
- return rc;
+ return device_register(&ofdev->dev);
}
EXPORT_SYMBOL(of_device_register);
void of_device_unregister(struct of_device *ofdev)
{
- device_remove_file(&ofdev->dev, &dev_attr_devspec);
device_unregister(&ofdev->dev);
}
EXPORT_SYMBOL(of_device_unregister);
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index ca09a63..298de0f 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -17,6 +17,8 @@
#include <linux/of_device.h>
#include <linux/of_platform.h>
+extern struct device_attribute of_platform_device_attrs[];
+
static int of_platform_bus_match(struct device *dev, struct device_driver *drv)
{
struct of_device *of_dev = to_of_device(dev);
@@ -103,6 +105,7 @@ int of_bus_type_init(struct bus_type *bus, const char *name)
bus->suspend = of_platform_device_suspend;
bus->resume = of_platform_device_resume;
bus->shutdown = of_platform_device_shutdown;
+ bus->dev_attrs = of_platform_device_attrs;
return bus_register(bus);
}