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Commit 140b932f authored by Olaf Hering's avatar Olaf Hering Committed by Paul Mackerras
Browse files

[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: default avatarOlaf Hering <olaf@aepfle.de>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 9d5f525b

drivers/macintosh/macio_sysfs.c

+11 −1
Original line number Diff line number Diff line
@@ -44,7 +44,7 @@ static ssize_t modalias_show (struct device *dev, struct device_attribute *attr, 
	struct of_device *ofdev = to_of_device(dev);

	int len;



	len = of_device_get_modalias(ofdev, buf, PAGE_SIZE);

	len = of_device_get_modalias(ofdev, buf, PAGE_SIZE - 2);



	buf[len] = '\n';

	buf[len+1] = 0;
@@ -52,6 +52,15 @@ static ssize_t modalias_show (struct device *dev, struct device_attribute *attr, 
	return len+1;

}



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\n", ofdev->node->full_name);

}



macio_config_of_attr (name, "%s\n");

macio_config_of_attr (type, "%s\n");
@@ -60,5 +69,6 @@ struct device_attribute macio_dev_attrs[] = { 
	__ATTR_RO(type),

	__ATTR_RO(compatible),

	__ATTR_RO(modalias),

	__ATTR_RO(devspec),

	__ATTR_NULL

};

drivers/of/device.c

+20 −16
Original line number Diff line number Diff line
@@ -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);

drivers/of/platform.c

+3 −0
Original line number Diff line number Diff line
@@ -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);

}