[linux-2.6-block.git] / drivers / s390 / scsi / zfcp_sysfs_adapter.c

/*
 * linux/drivers/s390/scsi/zfcp_sysfs_adapter.c
 *
 * FCP adapter driver for IBM eServer zSeries
 *
 * sysfs adapter related routines
 *
 * (C) Copyright IBM Corp. 2003, 2004
 *
 * Authors:
 *      Martin Peschke <mpeschke@de.ibm.com>
 *	Heiko Carstens <heiko.carstens@de.ibm.com>
 *      Andreas Herrmann <aherrman@de.ibm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#define ZFCP_SYSFS_ADAPTER_C_REVISION "$Revision: 1.38 $"

#include "zfcp_ext.h"

#define ZFCP_LOG_AREA                   ZFCP_LOG_AREA_CONFIG

static const char fc_topologies[5][25] = {
	"<error>",
	"point-to-point",
	"fabric",
	"arbitrated loop",
	"fabric (virt. adapter)"
};

/**
 * ZFCP_DEFINE_ADAPTER_ATTR
 * @_name:   name of show attribute
 * @_format: format string
 * @_value:  value to print
 *
 * Generates attributes for an adapter.
 */
#define ZFCP_DEFINE_ADAPTER_ATTR(_name, _format, _value)                      \
static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, struct device_attribute *attr,          \
						 char *buf)                   \
{                                                                             \
	struct zfcp_adapter *adapter;                                         \
                                                                              \
	adapter = dev_get_drvdata(dev);                                       \
	return sprintf(buf, _format, _value);                                 \
}                                                                             \
                                                                              \
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);

ZFCP_DEFINE_ADAPTER_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
ZFCP_DEFINE_ADAPTER_ATTR(wwnn, "0x%016llx\n", adapter->wwnn);
ZFCP_DEFINE_ADAPTER_ATTR(wwpn, "0x%016llx\n", adapter->wwpn);
ZFCP_DEFINE_ADAPTER_ATTR(s_id, "0x%06x\n", adapter->s_id);
ZFCP_DEFINE_ADAPTER_ATTR(peer_wwnn, "0x%016llx\n", adapter->peer_wwnn);
ZFCP_DEFINE_ADAPTER_ATTR(peer_wwpn, "0x%016llx\n", adapter->peer_wwpn);
ZFCP_DEFINE_ADAPTER_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
ZFCP_DEFINE_ADAPTER_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
ZFCP_DEFINE_ADAPTER_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
ZFCP_DEFINE_ADAPTER_ATTR(fc_link_speed, "%d Gb/s\n", adapter->fc_link_speed);
ZFCP_DEFINE_ADAPTER_ATTR(fc_service_class, "%d\n", adapter->fc_service_class);
ZFCP_DEFINE_ADAPTER_ATTR(fc_topology, "%s\n",
			 fc_topologies[adapter->fc_topology]);
ZFCP_DEFINE_ADAPTER_ATTR(hardware_version, "0x%08x\n",
			 adapter->hardware_version);
ZFCP_DEFINE_ADAPTER_ATTR(serial_number, "%17s\n", adapter->serial_number);
ZFCP_DEFINE_ADAPTER_ATTR(scsi_host_no, "0x%x\n", adapter->scsi_host_no);
ZFCP_DEFINE_ADAPTER_ATTR(in_recovery, "%d\n", atomic_test_mask
			 (ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status));

/**
 * zfcp_sysfs_port_add_store - add a port to sysfs tree
 * @dev: pointer to belonging device
 * @buf: pointer to input buffer
 * @count: number of bytes in buffer
 *
 * Store function of the "port_add" attribute of an adapter.
 */
static ssize_t
zfcp_sysfs_port_add_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	wwn_t wwpn;
	char *endp;
	struct zfcp_adapter *adapter;
	struct zfcp_port *port;
	int retval = -EINVAL;

	down(&zfcp_data.config_sema);

	adapter = dev_get_drvdata(dev);
	if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
		retval = -EBUSY;
		goto out;
	}

	wwpn = simple_strtoull(buf, &endp, 0);
	if ((endp + 1) < (buf + count))
		goto out;

	port = zfcp_port_enqueue(adapter, wwpn, 0, 0);
	if (!port)
		goto out;

	retval = 0;

	zfcp_erp_port_reopen(port, 0);
	zfcp_erp_wait(port->adapter);
	zfcp_port_put(port);
 out:
	up(&zfcp_data.config_sema);
	return retval ? retval : (ssize_t) count;
}

static DEVICE_ATTR(port_add, S_IWUSR, NULL, zfcp_sysfs_port_add_store);

/**
 * zfcp_sysfs_port_remove_store - remove a port from sysfs tree
 * @dev: pointer to belonging device
 * @buf: pointer to input buffer
 * @count: number of bytes in buffer
 *
 * Store function of the "port_remove" attribute of an adapter.
 */
static ssize_t
zfcp_sysfs_port_remove_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct zfcp_adapter *adapter;
	struct zfcp_port *port;
	wwn_t wwpn;
	char *endp;
	int retval = 0;

	down(&zfcp_data.config_sema);

	adapter = dev_get_drvdata(dev);
	if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
		retval = -EBUSY;
		goto out;
	}

	wwpn = simple_strtoull(buf, &endp, 0);
	if ((endp + 1) < (buf + count)) {
		retval = -EINVAL;
		goto out;
	}

	write_lock_irq(&zfcp_data.config_lock);
	port = zfcp_get_port_by_wwpn(adapter, wwpn);
	if (port && (atomic_read(&port->refcount) == 0)) {
		zfcp_port_get(port);
		atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
		list_move(&port->list, &adapter->port_remove_lh);
	}
	else {
		port = NULL;
	}
	write_unlock_irq(&zfcp_data.config_lock);

	if (!port) {
		retval = -ENXIO;
		goto out;
	}

	zfcp_erp_port_shutdown(port, 0);
	zfcp_erp_wait(adapter);
	zfcp_port_put(port);
	zfcp_port_dequeue(port);
 out:
	up(&zfcp_data.config_sema);
	return retval ? retval : (ssize_t) count;
}

static DEVICE_ATTR(port_remove, S_IWUSR, NULL, zfcp_sysfs_port_remove_store);

/**
 * zfcp_sysfs_adapter_failed_store - failed state of adapter
 * @dev: pointer to belonging device
 * @buf: pointer to input buffer
 * @count: number of bytes in buffer
 *
 * Store function of the "failed" attribute of an adapter.
 * If a "0" gets written to "failed", error recovery will be
 * started for the belonging adapter.
 */
static ssize_t
zfcp_sysfs_adapter_failed_store(struct device *dev, struct device_attribute *attr,
				const char *buf, size_t count)
{
	struct zfcp_adapter *adapter;
	unsigned int val;
	char *endp;
	int retval = 0;

	down(&zfcp_data.config_sema);

	adapter = dev_get_drvdata(dev);
	if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
		retval = -EBUSY;
		goto out;
	}

	val = simple_strtoul(buf, &endp, 0);
	if (((endp + 1) < (buf + count)) || (val != 0)) {
		retval = -EINVAL;
		goto out;
	}

	zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING,
				       ZFCP_SET);
	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
	zfcp_erp_wait(adapter);
 out:
	up(&zfcp_data.config_sema);
	return retval ? retval : (ssize_t) count;
}

/**
 * zfcp_sysfs_adapter_failed_show - failed state of adapter
 * @dev: pointer to belonging device
 * @buf: pointer to input buffer
 *
 * Show function of "failed" attribute of adapter. Will be
 * "0" if adapter is working, otherwise "1".
 */
static ssize_t
zfcp_sysfs_adapter_failed_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct zfcp_adapter *adapter;

	adapter = dev_get_drvdata(dev);
	if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status))
		return sprintf(buf, "1\n");
	else
		return sprintf(buf, "0\n");
}

static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_adapter_failed_show,
		   zfcp_sysfs_adapter_failed_store);

static struct attribute *zfcp_adapter_attrs[] = {
	&dev_attr_failed.attr,
	&dev_attr_in_recovery.attr,
	&dev_attr_port_remove.attr,
	&dev_attr_port_add.attr,
	&dev_attr_wwnn.attr,
	&dev_attr_wwpn.attr,
	&dev_attr_s_id.attr,
	&dev_attr_peer_wwnn.attr,
	&dev_attr_peer_wwpn.attr,
	&dev_attr_peer_d_id.attr,
	&dev_attr_card_version.attr,
	&dev_attr_lic_version.attr,
	&dev_attr_fc_link_speed.attr,
	&dev_attr_fc_service_class.attr,
	&dev_attr_fc_topology.attr,
	&dev_attr_scsi_host_no.attr,
	&dev_attr_status.attr,
	&dev_attr_hardware_version.attr,
	&dev_attr_serial_number.attr,
	NULL
};

static struct attribute_group zfcp_adapter_attr_group = {
	.attrs = zfcp_adapter_attrs,
};

/**
 * zfcp_sysfs_create_adapter_files - create sysfs adapter files
 * @dev: pointer to belonging device
 *
 * Create all attributes of the sysfs representation of an adapter.
 */
int
zfcp_sysfs_adapter_create_files(struct device *dev)
{
	return sysfs_create_group(&dev->kobj, &zfcp_adapter_attr_group);
}

/**
 * zfcp_sysfs_remove_adapter_files - remove sysfs adapter files
 * @dev: pointer to belonging device
 *
 * Remove all attributes of the sysfs representation of an adapter.
 */
void
zfcp_sysfs_adapter_remove_files(struct device *dev)
{
	sysfs_remove_group(&dev->kobj, &zfcp_adapter_attr_group);
}

#undef ZFCP_LOG_AREA
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/drivers/s390/scsi/zfcp_sysfs_adapter.c
	3	*
	4	* FCP adapter driver for IBM eServer zSeries
	5	*
	6	* sysfs adapter related routines
	7	*
	8	* (C) Copyright IBM Corp. 2003, 2004
	9	*
	10	* Authors:
	11	* Martin Peschke <mpeschke@de.ibm.com>
	12	* Heiko Carstens <heiko.carstens@de.ibm.com>
	13	* Andreas Herrmann <aherrman@de.ibm.com>
	14	*
	15	* This program is free software; you can redistribute it and/or modify
	16	* it under the terms of the GNU General Public License as published by
	17	* the Free Software Foundation; either version 2, or (at your option)
	18	* any later version.
	19	*
	20	* This program is distributed in the hope that it will be useful,
	21	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	22	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	23	* GNU General Public License for more details.
	24	*
	25	* You should have received a copy of the GNU General Public License
	26	* along with this program; if not, write to the Free Software
	27	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	28	*/
	29
	30	#define ZFCP_SYSFS_ADAPTER_C_REVISION "$Revision: 1.38 $"
	31
	32	#include "zfcp_ext.h"
	33
	34	#define ZFCP_LOG_AREA ZFCP_LOG_AREA_CONFIG
	35
	36	static const char fc_topologies[5][25] = {
	37	"<error>",
	38	"point-to-point",
	39	"fabric",
	40	"arbitrated loop",
	41	"fabric (virt. adapter)"
	42	};
	43
	44	/**
	45	* ZFCP_DEFINE_ADAPTER_ATTR
	46	* @_name: name of show attribute
	47	* @_format: format string
	48	* @_value: value to print
	49	*
	50	* Generates attributes for an adapter.
	51	*/
	52	#define ZFCP_DEFINE_ADAPTER_ATTR(_name, _format, _value) \
10523b3b	53	static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device dev, struct device_attribute attr, \
1da177e4 LT	54	char *buf) \
	55	{ \
	56	struct zfcp_adapter *adapter; \
	57	\
	58	adapter = dev_get_drvdata(dev); \
	59	return sprintf(buf, _format, _value); \
	60	} \
	61	\
	62	static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
	63
	64	ZFCP_DEFINE_ADAPTER_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
	65	ZFCP_DEFINE_ADAPTER_ATTR(wwnn, "0x%016llx\n", adapter->wwnn);
	66	ZFCP_DEFINE_ADAPTER_ATTR(wwpn, "0x%016llx\n", adapter->wwpn);
	67	ZFCP_DEFINE_ADAPTER_ATTR(s_id, "0x%06x\n", adapter->s_id);
6f71d9bc	68	ZFCP_DEFINE_ADAPTER_ATTR(peer_wwnn, "0x%016llx\n", adapter->peer_wwnn);
	69	ZFCP_DEFINE_ADAPTER_ATTR(peer_wwpn, "0x%016llx\n", adapter->peer_wwpn);
	70	ZFCP_DEFINE_ADAPTER_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
1da177e4 LT	71	ZFCP_DEFINE_ADAPTER_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
	72	ZFCP_DEFINE_ADAPTER_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
	73	ZFCP_DEFINE_ADAPTER_ATTR(fc_link_speed, "%d Gb/s\n", adapter->fc_link_speed);
	74	ZFCP_DEFINE_ADAPTER_ATTR(fc_service_class, "%d\n", adapter->fc_service_class);
	75	ZFCP_DEFINE_ADAPTER_ATTR(fc_topology, "%s\n",
	76	fc_topologies[adapter->fc_topology]);
	77	ZFCP_DEFINE_ADAPTER_ATTR(hardware_version, "0x%08x\n",
	78	adapter->hardware_version);
	79	ZFCP_DEFINE_ADAPTER_ATTR(serial_number, "%17s\n", adapter->serial_number);
	80	ZFCP_DEFINE_ADAPTER_ATTR(scsi_host_no, "0x%x\n", adapter->scsi_host_no);
	81	ZFCP_DEFINE_ADAPTER_ATTR(in_recovery, "%d\n", atomic_test_mask
	82	(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status));
	83
	84	/**
	85	* zfcp_sysfs_port_add_store - add a port to sysfs tree
	86	* @dev: pointer to belonging device
	87	* @buf: pointer to input buffer
	88	* @count: number of bytes in buffer
	89	*
	90	* Store function of the "port_add" attribute of an adapter.
	91	*/
	92	static ssize_t
10523b3b	93	zfcp_sysfs_port_add_store(struct device dev, struct device_attribute attr, const char *buf, size_t count)
1da177e4 LT	94	{
	95	wwn_t wwpn;
	96	char *endp;
	97	struct zfcp_adapter *adapter;
	98	struct zfcp_port *port;
	99	int retval = -EINVAL;
	100
	101	down(&zfcp_data.config_sema);
	102
	103	adapter = dev_get_drvdata(dev);
	104	if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
	105	retval = -EBUSY;
	106	goto out;
	107	}
	108
	109	wwpn = simple_strtoull(buf, &endp, 0);
	110	if ((endp + 1) < (buf + count))
	111	goto out;
	112
	113	port = zfcp_port_enqueue(adapter, wwpn, 0, 0);
	114	if (!port)
	115	goto out;
	116
	117	retval = 0;
	118
	119	zfcp_erp_port_reopen(port, 0);
	120	zfcp_erp_wait(port->adapter);
	121	zfcp_port_put(port);
	122	out:
	123	up(&zfcp_data.config_sema);
	124	return retval ? retval : (ssize_t) count;
	125	}
	126
	127	static DEVICE_ATTR(port_add, S_IWUSR, NULL, zfcp_sysfs_port_add_store);
	128
	129	/**
	130	* zfcp_sysfs_port_remove_store - remove a port from sysfs tree
	131	* @dev: pointer to belonging device
	132	* @buf: pointer to input buffer
	133	* @count: number of bytes in buffer
	134	*
	135	* Store function of the "port_remove" attribute of an adapter.
	136	*/
	137	static ssize_t
10523b3b	138	zfcp_sysfs_port_remove_store(struct device dev, struct device_attribute attr, const char *buf, size_t count)
1da177e4 LT	139	{
	140	struct zfcp_adapter *adapter;
	141	struct zfcp_port *port;
	142	wwn_t wwpn;
	143	char *endp;
	144	int retval = 0;
	145
	146	down(&zfcp_data.config_sema);
	147
	148	adapter = dev_get_drvdata(dev);
	149	if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
	150	retval = -EBUSY;
	151	goto out;
	152	}
	153
	154	wwpn = simple_strtoull(buf, &endp, 0);
	155	if ((endp + 1) < (buf + count)) {
	156	retval = -EINVAL;
	157	goto out;
	158	}
	159
	160	write_lock_irq(&zfcp_data.config_lock);
	161	port = zfcp_get_port_by_wwpn(adapter, wwpn);
	162	if (port && (atomic_read(&port->refcount) == 0)) {
	163	zfcp_port_get(port);
	164	atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
	165	list_move(&port->list, &adapter->port_remove_lh);
	166	}
	167	else {
	168	port = NULL;
	169	}
	170	write_unlock_irq(&zfcp_data.config_lock);
	171
	172	if (!port) {
	173	retval = -ENXIO;
	174	goto out;
	175	}
	176
	177	zfcp_erp_port_shutdown(port, 0);
	178	zfcp_erp_wait(adapter);
	179	zfcp_port_put(port);
	180	zfcp_port_dequeue(port);
	181	out:
	182	up(&zfcp_data.config_sema);
	183	return retval ? retval : (ssize_t) count;
	184	}
	185
	186	static DEVICE_ATTR(port_remove, S_IWUSR, NULL, zfcp_sysfs_port_remove_store);
	187
	188	/**
	189	* zfcp_sysfs_adapter_failed_store - failed state of adapter
	190	* @dev: pointer to belonging device
	191	* @buf: pointer to input buffer
	192	* @count: number of bytes in buffer
	193	*
	194	* Store function of the "failed" attribute of an adapter.
	195	* If a "0" gets written to "failed", error recovery will be
	196	* started for the belonging adapter.
	197	*/
	198	static ssize_t
10523b3b	199	zfcp_sysfs_adapter_failed_store(struct device dev, struct device_attribute attr,
1da177e4 LT	200	const char *buf, size_t count)
	201	{
	202	struct zfcp_adapter *adapter;
	203	unsigned int val;
	204	char *endp;
	205	int retval = 0;
	206
	207	down(&zfcp_data.config_sema);
	208
	209	adapter = dev_get_drvdata(dev);
	210	if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
	211	retval = -EBUSY;
	212	goto out;
	213	}
	214
	215	val = simple_strtoul(buf, &endp, 0);
	216	if (((endp + 1) < (buf + count)) \|\| (val != 0)) {
	217	retval = -EINVAL;
	218	goto out;
	219	}
	220
	221	zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING,
	222	ZFCP_SET);
	223	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
	224	zfcp_erp_wait(adapter);
	225	out:
	226	up(&zfcp_data.config_sema);
	227	return retval ? retval : (ssize_t) count;
	228	}
	229
	230	/**
	231	* zfcp_sysfs_adapter_failed_show - failed state of adapter
	232	* @dev: pointer to belonging device
	233	* @buf: pointer to input buffer
	234	*
	235	* Show function of "failed" attribute of adapter. Will be
	236	* "0" if adapter is working, otherwise "1".
	237	*/
	238	static ssize_t
10523b3b	239	zfcp_sysfs_adapter_failed_show(struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	240	{
	241	struct zfcp_adapter *adapter;
	242
	243	adapter = dev_get_drvdata(dev);
	244	if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status))
	245	return sprintf(buf, "1\n");
	246	else
	247	return sprintf(buf, "0\n");
	248	}
	249
	250	static DEVICE_ATTR(failed, S_IWUSR \| S_IRUGO, zfcp_sysfs_adapter_failed_show,
	251	zfcp_sysfs_adapter_failed_store);
	252
	253	static struct attribute *zfcp_adapter_attrs[] = {
	254	&dev_attr_failed.attr,
	255	&dev_attr_in_recovery.attr,
	256	&dev_attr_port_remove.attr,
	257	&dev_attr_port_add.attr,
	258	&dev_attr_wwnn.attr,
	259	&dev_attr_wwpn.attr,
	260	&dev_attr_s_id.attr,
6f71d9bc	261	&dev_attr_peer_wwnn.attr,
	262	&dev_attr_peer_wwpn.attr,
	263	&dev_attr_peer_d_id.attr,
1da177e4 LT	264	&dev_attr_card_version.attr,
	265	&dev_attr_lic_version.attr,
	266	&dev_attr_fc_link_speed.attr,
	267	&dev_attr_fc_service_class.attr,
	268	&dev_attr_fc_topology.attr,
	269	&dev_attr_scsi_host_no.attr,
	270	&dev_attr_status.attr,
	271	&dev_attr_hardware_version.attr,
	272	&dev_attr_serial_number.attr,
	273	NULL
	274	};
	275
	276	static struct attribute_group zfcp_adapter_attr_group = {
	277	.attrs = zfcp_adapter_attrs,
	278	};
	279
	280	/**
	281	* zfcp_sysfs_create_adapter_files - create sysfs adapter files
	282	* @dev: pointer to belonging device
	283	*
	284	* Create all attributes of the sysfs representation of an adapter.
	285	*/
	286	int
	287	zfcp_sysfs_adapter_create_files(struct device *dev)
	288	{
	289	return sysfs_create_group(&dev->kobj, &zfcp_adapter_attr_group);
	290	}
	291
	292	/**
	293	* zfcp_sysfs_remove_adapter_files - remove sysfs adapter files
	294	* @dev: pointer to belonging device
	295	*
	296	* Remove all attributes of the sysfs representation of an adapter.
	297	*/
	298	void
	299	zfcp_sysfs_adapter_remove_files(struct device *dev)
	300	{
	301	sysfs_remove_group(&dev->kobj, &zfcp_adapter_attr_group);
	302	}
	303
	304	#undef ZFCP_LOG_AREA