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[SCSI] zfcp: Cleanup code in zfcp_ccw
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Overall cleanup in file zfcp_ccw.c. Fix coding style issues, remove
useless macros and messages and convert remaining messages to standard
macros.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Christof Schmitt authored and James Bottomley committed Jul 12, 2008
1 parent 45633fd commit fa04c28
Showing 1 changed file with 50 additions and 100 deletions.
150 changes: 50 additions & 100 deletions drivers/s390/scsi/zfcp_ccw.c
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Original file line number Diff line number Diff line change
@@ -1,64 +1,13 @@
/*
* This file is part of the zfcp device driver for
* FCP adapters for IBM System z9 and zSeries.
* zfcp device driver
*
* (C) Copyright IBM Corp. 2002, 2006
* Registration and callback for the s390 common I/O layer.
*
* 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.
* Copyright IBM Corporation 2002, 2008
*/

#include "zfcp_ext.h"

#define ZFCP_LOG_AREA ZFCP_LOG_AREA_CONFIG

static int zfcp_ccw_probe(struct ccw_device *);
static void zfcp_ccw_remove(struct ccw_device *);
static int zfcp_ccw_set_online(struct ccw_device *);
static int zfcp_ccw_set_offline(struct ccw_device *);
static int zfcp_ccw_notify(struct ccw_device *, int);
static void zfcp_ccw_shutdown(struct ccw_device *);

static struct ccw_device_id zfcp_ccw_device_id[] = {
{CCW_DEVICE_DEVTYPE(ZFCP_CONTROL_UNIT_TYPE,
ZFCP_CONTROL_UNIT_MODEL,
ZFCP_DEVICE_TYPE,
ZFCP_DEVICE_MODEL)},
{CCW_DEVICE_DEVTYPE(ZFCP_CONTROL_UNIT_TYPE,
ZFCP_CONTROL_UNIT_MODEL,
ZFCP_DEVICE_TYPE,
ZFCP_DEVICE_MODEL_PRIV)},
{},
};

static struct ccw_driver zfcp_ccw_driver = {
.owner = THIS_MODULE,
.name = ZFCP_NAME,
.ids = zfcp_ccw_device_id,
.probe = zfcp_ccw_probe,
.remove = zfcp_ccw_remove,
.set_online = zfcp_ccw_set_online,
.set_offline = zfcp_ccw_set_offline,
.notify = zfcp_ccw_notify,
.shutdown = zfcp_ccw_shutdown,
.driver = {
.groups = zfcp_driver_attr_groups,
},
};

MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);

/**
* zfcp_ccw_probe - probe function of zfcp driver
* @ccw_device: pointer to belonging ccw device
Expand All @@ -69,19 +18,18 @@ MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);
* In addition the nameserver port will be added to the ports of the adapter
* and its sysfs representation will be created too.
*/
static int
zfcp_ccw_probe(struct ccw_device *ccw_device)
static int zfcp_ccw_probe(struct ccw_device *ccw_device)
{
struct zfcp_adapter *adapter;
int retval = 0;

down(&zfcp_data.config_sema);
adapter = zfcp_adapter_enqueue(ccw_device);
if (!adapter)
if (!adapter) {
dev_err(&ccw_device->dev,
"Setup of data structures failed.\n");
retval = -EINVAL;
else
ZFCP_LOG_DEBUG("Probed adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
}
up(&zfcp_data.config_sema);
return retval;
}
Expand All @@ -95,8 +43,7 @@ zfcp_ccw_probe(struct ccw_device *ccw_device)
* ports that belong to this adapter. And in addition all resources of this
* adapter will be freed too.
*/
static void
zfcp_ccw_remove(struct ccw_device *ccw_device)
static void zfcp_ccw_remove(struct ccw_device *ccw_device)
{
struct zfcp_adapter *adapter;
struct zfcp_port *port, *p;
Expand All @@ -106,8 +53,6 @@ zfcp_ccw_remove(struct ccw_device *ccw_device)
down(&zfcp_data.config_sema);
adapter = dev_get_drvdata(&ccw_device->dev);

ZFCP_LOG_DEBUG("Removing adapter %s\n",
zfcp_get_busid_by_adapter(adapter));
write_lock_irq(&zfcp_data.config_lock);
list_for_each_entry_safe(port, p, &adapter->port_list_head, list) {
list_for_each_entry_safe(unit, u, &port->unit_list_head, list) {
Expand Down Expand Up @@ -145,8 +90,7 @@ zfcp_ccw_remove(struct ccw_device *ccw_device)
* registered with the SCSI stack, that the QDIO queues will be set up
* and that the adapter will be opened (asynchronously).
*/
static int
zfcp_ccw_set_online(struct ccw_device *ccw_device)
static int zfcp_ccw_set_online(struct ccw_device *ccw_device)
{
struct zfcp_adapter *adapter;
int retval;
Expand All @@ -155,12 +99,8 @@ zfcp_ccw_set_online(struct ccw_device *ccw_device)
adapter = dev_get_drvdata(&ccw_device->dev);

retval = zfcp_erp_thread_setup(adapter);
if (retval) {
ZFCP_LOG_INFO("error: start of error recovery thread for "
"adapter %s failed\n",
zfcp_get_busid_by_adapter(adapter));
if (retval)
goto out;
}

retval = zfcp_adapter_scsi_register(adapter);
if (retval)
Expand Down Expand Up @@ -191,8 +131,7 @@ zfcp_ccw_set_online(struct ccw_device *ccw_device)
* This function gets called by the common i/o layer and sets an adapter
* into state offline.
*/
static int
zfcp_ccw_set_offline(struct ccw_device *ccw_device)
static int zfcp_ccw_set_offline(struct ccw_device *ccw_device)
{
struct zfcp_adapter *adapter;

Expand All @@ -206,34 +145,30 @@ zfcp_ccw_set_offline(struct ccw_device *ccw_device)
}

/**
* zfcp_ccw_notify
* zfcp_ccw_notify - ccw notify function
* @ccw_device: pointer to belonging ccw device
* @event: indicates if adapter was detached or attached
*
* This function gets called by the common i/o layer if an adapter has gone
* or reappeared.
*/
static int
zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
{
struct zfcp_adapter *adapter;

down(&zfcp_data.config_sema);
adapter = dev_get_drvdata(&ccw_device->dev);
switch (event) {
case CIO_GONE:
ZFCP_LOG_NORMAL("adapter %s: device gone\n",
zfcp_get_busid_by_adapter(adapter));
dev_warn(&adapter->ccw_device->dev, "device gone\n");
zfcp_erp_adapter_shutdown(adapter, 0, 87, NULL);
break;
case CIO_NO_PATH:
ZFCP_LOG_NORMAL("adapter %s: no path\n",
zfcp_get_busid_by_adapter(adapter));
dev_warn(&adapter->ccw_device->dev, "no path\n");
zfcp_erp_adapter_shutdown(adapter, 0, 88, NULL);
break;
case CIO_OPER:
ZFCP_LOG_NORMAL("adapter %s: operational again\n",
zfcp_get_busid_by_adapter(adapter));
dev_info(&adapter->ccw_device->dev, "operational again\n");
zfcp_erp_modify_adapter_status(adapter, 11, NULL,
ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET);
Expand All @@ -247,24 +182,10 @@ zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
}

/**
* zfcp_ccw_register - ccw register function
*
* Registers the driver at the common i/o layer. This function will be called
* at module load time/system start.
* zfcp_ccw_shutdown - handle shutdown from cio
* @cdev: device for adapter to shutdown.
*/
int __init
zfcp_ccw_register(void)
{
return ccw_driver_register(&zfcp_ccw_driver);
}

/**
* zfcp_ccw_shutdown - gets called on reboot/shutdown
*
* Makes sure that QDIO queues are down when the system gets stopped.
*/
static void
zfcp_ccw_shutdown(struct ccw_device *cdev)
static void zfcp_ccw_shutdown(struct ccw_device *cdev)
{
struct zfcp_adapter *adapter;

Expand All @@ -275,4 +196,33 @@ zfcp_ccw_shutdown(struct ccw_device *cdev)
up(&zfcp_data.config_sema);
}

#undef ZFCP_LOG_AREA
static struct ccw_device_id zfcp_ccw_device_id[] = {
{ CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, 0x3) },
{ CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, 0x4) }, /* priv. */
{},
};

MODULE_DEVICE_TABLE(ccw, zfcp_ccw_device_id);

static struct ccw_driver zfcp_ccw_driver = {
.owner = THIS_MODULE,
.name = "zfcp",
.ids = zfcp_ccw_device_id,
.probe = zfcp_ccw_probe,
.remove = zfcp_ccw_remove,
.set_online = zfcp_ccw_set_online,
.set_offline = zfcp_ccw_set_offline,
.notify = zfcp_ccw_notify,
.shutdown = zfcp_ccw_shutdown,
};

/**
* zfcp_ccw_register - ccw register function
*
* Registers the driver at the common i/o layer. This function will be called
* at module load time/system start.
*/
int __init zfcp_ccw_register(void)
{
return ccw_driver_register(&zfcp_ccw_driver);
}

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