Commit b5bf5b67 authored by Jeff Mahoney's avatar Jeff Mahoney Committed by Linus Torvalds
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[PATCH] openfirmware: add sysfs nodes for open firmware devices 

This adds sysfs nodes that the hotplug userspace can use to load the
appropriate modules.

In order for hotplug to work with macio devices, patches to
module-init-tools and hotplug must be applied.  Those patches are
available at:

 ftp://ftp.suse.com/pub/people/jeffm/linux/macio-hotplug/



Changes: The previous versions were built on 2.6.12. 2.6.13-rcX introduced
         a device_attribute parameter to the show functions. Since that
         parameter was treated as the output buffer, memory corruption would
         result, causing Oopsen very quickly.

Signed-off-by: default avatarJeff Mahoney <jeffm@suse.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 5e655772

drivers/macintosh/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -4,7 +4,7 @@ 


# Each configuration option enables a list of files.



obj-$(CONFIG_PPC_PMAC)		+= macio_asic.o

obj-$(CONFIG_PPC_PMAC)		+= macio_asic.o macio_sysfs.o



obj-$(CONFIG_PMAC_MEDIABAY)	+= mediabay.o

obj-$(CONFIG_MAC_EMUMOUSEBTN)	+= mac_hid.o

drivers/macintosh/macio_asic.c

+3 −0
Original line number Diff line number Diff line
@@ -126,11 +126,14 @@ static int macio_device_resume(struct device * dev) 
	return 0;

}



extern struct device_attribute macio_dev_attrs[];



struct bus_type macio_bus_type = {

       .name	= "macio",

       .match	= macio_bus_match,

       .suspend	= macio_device_suspend,

       .resume	= macio_device_resume,

       .dev_attrs = macio_dev_attrs,

};



static int __init macio_bus_driver_init(void)

drivers/macintosh/macio_sysfs.c

0 → 100644
+50 −0
Original line number Diff line number Diff line 
#include <linux/config.h>

#include <linux/kernel.h>

#include <linux/stat.h>

#include <asm/macio.h>





#define macio_config_of_attr(field, format_string)			\

static ssize_t								\

field##_show (struct device *dev, struct device_attribute *attr,	\

              char *buf)						\

{									\

	struct macio_dev *mdev = to_macio_device (dev);			\

	return sprintf (buf, format_string, mdev->ofdev.node->field);	\

}



static ssize_t

compatible_show (struct device *dev, struct device_attribute *attr, char *buf)

{

	struct of_device *of;

	char *compat;

	int cplen;

	int length = 0;



	of = &to_macio_device (dev)->ofdev;

	compat = (char *) get_property(of->node, "compatible", &cplen);

	if (!compat) {

		*buf = '\0';

		return 0;

	}

	while (cplen > 0) {

		int l;

		length += sprintf (buf, "%s\n", compat);

		buf += length;

		l = strlen (compat) + 1;

		compat += l;

		cplen -= l;

	}



	return length;

}



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

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



struct device_attribute macio_dev_attrs[] = {

	__ATTR_RO(name),

	__ATTR_RO(type),

	__ATTR_RO(compatible),

	__ATTR_NULL

};

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