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Commit 3d579c35 authored by Stuart Yoder's avatar Stuart Yoder Committed by Greg Kroah-Hartman
Browse files

staging: fsl-mc: add support for the modalias sysfs attribute 



In order to support uevent based module loading implement modalias support
for the fsl-mc bus driver. Aliases are based on vendor and object/device
id and are of the form "fsl-mc:vNdN".

Signed-off-by: default avatarStuart Yoder <stuart.yoder@nxp.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b3e6916d

drivers/staging/fsl-mc/bus/mc-bus.c

+25 −0
Original line number Diff line number Diff line
@@ -82,10 +82,35 @@ static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 
	return 0;

}



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

			     char *buf)

{

	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);



	return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,

		       mc_dev->obj_desc.type);

}

static DEVICE_ATTR_RO(modalias);



static struct attribute *fsl_mc_dev_attrs[] = {

	&dev_attr_modalias.attr,

	NULL,

};



static const struct attribute_group fsl_mc_dev_group = {

	.attrs = fsl_mc_dev_attrs,

};



static const struct attribute_group *fsl_mc_dev_groups[] = {

	&fsl_mc_dev_group,

	NULL,

};



struct bus_type fsl_mc_bus_type = {

	.name = "fsl-mc",

	.match = fsl_mc_bus_match,

	.uevent = fsl_mc_bus_uevent,

	.dev_groups = fsl_mc_dev_groups,

};

EXPORT_SYMBOL_GPL(fsl_mc_bus_type);