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Commit 578b7cd1 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt
Browse files

powerpc/vio: Add modalias support 



BenH: Added to vio_cmo_dev_attrs as well

Provide a modalias entry for VIO devices in sysfs.  I believe
this was another initrd generation bugfix for anaconda.
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 55052eec

arch/powerpc/kernel/vio.c

+21 −0
Original line number Diff line number Diff line
@@ -958,9 +958,12 @@ viodev_cmo_rd_attr(allocated); 


static ssize_t name_show(struct device *, struct device_attribute *, char *);

static ssize_t devspec_show(struct device *, struct device_attribute *, char *);

static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,

			     char *buf);

static struct device_attribute vio_cmo_dev_attrs[] = {

	__ATTR_RO(name),

	__ATTR_RO(devspec),

	__ATTR_RO(modalias),

	__ATTR(cmo_desired,       S_IWUSR|S_IRUSR|S_IWGRP|S_IRGRP|S_IROTH,

	       viodev_cmo_desired_show, viodev_cmo_desired_set),

	__ATTR(cmo_entitled,      S_IRUGO, viodev_cmo_entitled_show,      NULL),
@@ -1320,9 +1323,27 @@ static ssize_t devspec_show(struct device *dev, 
	return sprintf(buf, "%s\n", of_node ? of_node->full_name : "none");

}



static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,

			     char *buf)

{

	const struct vio_dev *vio_dev = to_vio_dev(dev);

	struct device_node *dn;

	const char *cp;



	dn = dev->archdata.of_node;

	if (!dn)

		return -ENODEV;

	cp = of_get_property(dn, "compatible", NULL);

	if (!cp)

		return -ENODEV;



	return sprintf(buf, "vio:T%sS%s\n", vio_dev->type, cp);

}



static struct device_attribute vio_dev_attrs[] = {

	__ATTR_RO(name),

	__ATTR_RO(devspec),

	__ATTR_RO(modalias),

	__ATTR_NULL

};