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Commit 35eb97bb authored by Jens Taprogge's avatar Jens Taprogge Committed by Greg Kroah-Hartman
Browse files

Staging: ipack: Expose modalias through sysfs. 



Also include it in the hotplug event so that udev can
provide the respective driver.

Signed-off-by: default avatarJens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: default avatarSamuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4aa09d47

drivers/staging/ipack/ipack.c

+36 −0
Original line number Diff line number Diff line
@@ -86,6 +86,31 @@ static int ipack_bus_remove(struct device *device) 
	return 0;

}



#ifdef CONFIG_HOTPLUG



static int ipack_uevent(struct device *dev, struct kobj_uevent_env *env)

{

	struct ipack_device *idev;



	if (!dev)

		return -ENODEV;



	idev = to_ipack_dev(dev);



	if (add_uevent_var(env,

			   "MODALIAS=ipack:f%02Xv%08Xd%08X", idev->id_format,

			   idev->id_vendor, idev->id_device))

		return -ENOMEM;



	return 0;

}



#else /* !CONFIG_HOTPLUG */



#define ipack_uevent NULL



#endif /* !CONFIG_HOTPLUG */



#define ipack_device_attr(field, format_string)				\

static ssize_t								\

field##_show(struct device *dev, struct device_attribute *attr,		\
@@ -123,12 +148,22 @@ id_device_show(struct device *dev, struct device_attribute *attr, char *buf) 
	}

}



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

			     char *buf)

{

	struct ipack_device *idev = to_ipack_dev(dev);



	return sprintf(buf, "ipac:f%02Xv%08Xd%08X", idev->id_format,

		       idev->id_vendor, idev->id_device);

}



ipack_device_attr(id_format, "0x%hhu\n");



static struct device_attribute ipack_dev_attrs[] = {

	__ATTR_RO(id_device),

	__ATTR_RO(id_format),

	__ATTR_RO(id_vendor),

	__ATTR_RO(modalias),

};



static struct bus_type ipack_bus_type = {
@@ -137,6 +172,7 @@ static struct bus_type ipack_bus_type = { 
	.match     = ipack_bus_match,

	.remove    = ipack_bus_remove,

	.dev_attrs = ipack_dev_attrs,

	.uevent	   = ipack_uevent,

};



struct ipack_bus_device *ipack_bus_register(struct device *parent, int slots,