Commit f1fc78a8 authored by Bastian Blank's avatar Bastian Blank Committed by Linus Torvalds
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[PATCH] s390, ccw - export modalias 



This patch exports modalias for ccw devices.

So you can do:
 	modprobe `echo /sys/device/path_to_device/modalias`
and the proper driver will automatically be loaded by userspace.

Signed-off-by: default avatarBastian Blank <waldi@debian.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 1e8e3383

drivers/s390/cio/device.c

+19 −0
Original line number Diff line number Diff line
@@ -251,6 +251,23 @@ cutype_show (struct device *dev, struct device_attribute *attr, char *buf) 
		       id->cu_type, id->cu_model);

}



static ssize_t

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

{

	struct ccw_device *cdev = to_ccwdev(dev);

	struct ccw_device_id *id = &(cdev->id);

	int ret;



	ret = sprintf(buf, "ccw:t%04Xm%02x",

			id->cu_type, id->cu_model);

	if (id->dev_type != 0)

		ret += sprintf(buf + ret, "dt%04Xdm%02X\n",

				id->dev_type, id->dev_model);

	else

		ret += sprintf(buf + ret, "dtdm\n");

	return ret;

}



static ssize_t

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

{
@@ -448,6 +465,7 @@ static DEVICE_ATTR(chpids, 0444, chpids_show, NULL); 
static DEVICE_ATTR(pimpampom, 0444, pimpampom_show, NULL);

static DEVICE_ATTR(devtype, 0444, devtype_show, NULL);

static DEVICE_ATTR(cutype, 0444, cutype_show, NULL);

static DEVICE_ATTR(modalias, 0444, modalias_show, NULL);

static DEVICE_ATTR(online, 0644, online_show, online_store);

extern struct device_attribute dev_attr_cmb_enable;

static DEVICE_ATTR(availability, 0444, available_show, NULL);
@@ -471,6 +489,7 @@ subchannel_add_files (struct device *dev) 
static struct attribute * ccwdev_attrs[] = {

	&dev_attr_devtype.attr,

	&dev_attr_cutype.attr,

	&dev_attr_modalias.attr,

	&dev_attr_online.attr,

	&dev_attr_cmb_enable.attr,

	&dev_attr_availability.attr,

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