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Commit 2eb6e1f3 authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
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[PATCH] s390: zfcp host adapter 

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

 - Adapt to notify api change in cio.
 - Add missing unregister_reboot_notifier() for error path.
 - Fix infinite error recovery escalation for certain port failures.
 - Fix reference counting.
 - Use GFP_ATOMIC for kmalloc while holding a spinlock.
 - Don't open adapter/port if unit/port is removed from configuration
   after it has already been closed.
 - Don't establish qdio queues if a port/unit is going to be removed.
 - Shutdown ports and units before removing them.
 - Use schedule_work for scsi_add_device.
 - Don't reopen nameserver port when an rscn was received.
 - Don't call scsi_done twice in zfcp_fsf_send_fcp_command_task_handler.
 - Get rid of scsi fake queue, scsi_reqs_active and scsi_reqs_active_wq.
 - Get rid of unused adapter status.
 - Allow enabling of scsi devices at boot time with zfcp_dev parameter.
 - Change name prefix from sg to sg_list for functions which work with
   the struct sg_list.
 - Don't call scsi_add_device from zfcp error recovery thread to avoid a
   deadlock if a scsi command sent during scsi_add_device fails.
 - Fix scsi i/o stall due to missing local-link-up event.
parent 99e0846e
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Showing with 431 additions and 402 deletions
drivers/s390/scsi/zfcp_aux.c
View file @ 2eb6e1f3
This diff is collapsed.
drivers/s390/scsi/zfcp_ccw.c
View file @ 2eb6e1f3
...@@ -25,7 +25,7 @@ ...@@ -25,7 +25,7 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#define ZFCP_CCW_C_REVISION "$Revision: 1.33 $" #define ZFCP_CCW_C_REVISION "$Revision: 1.36 $"
#include <linux/init.h> #include <linux/init.h>
#include <linux/module.h> #include <linux/module.h>
...@@ -37,7 +37,7 @@ ...@@ -37,7 +37,7 @@
#define ZFCP_LOG_AREA_PREFIX ZFCP_LOG_AREA_PREFIX_CONFIG #define ZFCP_LOG_AREA_PREFIX ZFCP_LOG_AREA_PREFIX_CONFIG
static int zfcp_ccw_probe(struct ccw_device *); static int zfcp_ccw_probe(struct ccw_device *);
static int zfcp_ccw_remove(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_online(struct ccw_device *);
static int zfcp_ccw_set_offline(struct ccw_device *); static int zfcp_ccw_set_offline(struct ccw_device *);
...@@ -90,16 +90,17 @@ zfcp_ccw_probe(struct ccw_device *ccw_device) ...@@ -90,16 +90,17 @@ zfcp_ccw_probe(struct ccw_device *ccw_device)
* *
* This function gets called by the common i/o layer and removes an adapter * This function gets called by the common i/o layer and removes an adapter
* from the system. Task of this function is to get rid of all units and * from the system. Task of this function is to get rid of all units and
* ports that belong to this adapter. And addition all resources of this * ports that belong to this adapter. And in addition all resources of this
* adapter will be freed too. * adapter will be freed too.
*/ */
static int static void
zfcp_ccw_remove(struct ccw_device *ccw_device) zfcp_ccw_remove(struct ccw_device *ccw_device)
{ {
struct zfcp_adapter *adapter; struct zfcp_adapter *adapter;
struct zfcp_port *port, *p; struct zfcp_port *port, *p;
struct zfcp_unit *unit, *u; struct zfcp_unit *unit, *u;
ccw_device_set_offline(ccw_device);
down(&zfcp_data.config_sema); down(&zfcp_data.config_sema);
adapter = dev_get_drvdata(&ccw_device->dev); adapter = dev_get_drvdata(&ccw_device->dev);
...@@ -119,16 +120,18 @@ zfcp_ccw_remove(struct ccw_device *ccw_device) ...@@ -119,16 +120,18 @@ zfcp_ccw_remove(struct ccw_device *ccw_device)
list_for_each_entry_safe(port, p, &adapter->port_remove_lh, list) { list_for_each_entry_safe(port, p, &adapter->port_remove_lh, list) {
list_for_each_entry_safe(unit, u, &port->unit_remove_lh, list) { list_for_each_entry_safe(unit, u, &port->unit_remove_lh, list) {
zfcp_unit_wait(unit); zfcp_unit_wait(unit);
zfcp_sysfs_unit_remove_files(&unit->sysfs_device);
device_unregister(&unit->sysfs_device); device_unregister(&unit->sysfs_device);
} }
zfcp_port_wait(port); zfcp_port_wait(port);
zfcp_sysfs_port_remove_files(&port->sysfs_device,
atomic_read(&port->status));
device_unregister(&port->sysfs_device); device_unregister(&port->sysfs_device);
} }
zfcp_adapter_wait(adapter); zfcp_adapter_wait(adapter);
zfcp_adapter_dequeue(adapter); zfcp_adapter_dequeue(adapter);
up(&zfcp_data.config_sema); up(&zfcp_data.config_sema);
return 0;
} }
/** /**
...@@ -155,6 +158,7 @@ zfcp_ccw_set_online(struct ccw_device *ccw_device) ...@@ -155,6 +158,7 @@ zfcp_ccw_set_online(struct ccw_device *ccw_device)
zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING, zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET); ZFCP_SET);
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED); zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
zfcp_erp_wait(adapter);
out: out:
up(&zfcp_data.config_sema); up(&zfcp_data.config_sema);
return retval; return retval;
......
drivers/s390/scsi/zfcp_def.h
View file @ 2eb6e1f3
...@@ -31,10 +31,8 @@ ...@@ -31,10 +31,8 @@
#ifndef ZFCP_DEF_H #ifndef ZFCP_DEF_H
#define ZFCP_DEF_H #define ZFCP_DEF_H
#ifdef __KERNEL__
/* this drivers version (do not edit !!! generated and updated by cvs) */ /* this drivers version (do not edit !!! generated and updated by cvs) */
#define ZFCP_DEF_REVISION "$Revision: 1.41 $" #define ZFCP_DEF_REVISION "$Revision: 1.48 $"
/*************************** INCLUDES *****************************************/ /*************************** INCLUDES *****************************************/
...@@ -64,7 +62,6 @@ ...@@ -64,7 +62,6 @@
typedef u32 scsi_id_t; typedef u32 scsi_id_t;
typedef u32 scsi_lun_t; typedef u32 scsi_lun_t;
#define ZFCP_FAKE_SCSI_COMPLETION_TIME (HZ / 3)
#define ZFCP_ERP_SCSI_LOW_MEM_TIMEOUT (100*HZ) #define ZFCP_ERP_SCSI_LOW_MEM_TIMEOUT (100*HZ)
#define ZFCP_SCSI_ER_TIMEOUT (100*HZ) #define ZFCP_SCSI_ER_TIMEOUT (100*HZ)
#define ZFCP_SCSI_HOST_FLUSH_TIMEOUT (1*HZ) #define ZFCP_SCSI_HOST_FLUSH_TIMEOUT (1*HZ)
...@@ -470,7 +467,6 @@ extern u32 flags_dump; ...@@ -470,7 +467,6 @@ extern u32 flags_dump;
#define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL 0x00000080 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL 0x00000080
#define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100
#define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200
#define ZFCP_STATUS_ADAPTER_QUEUECOMMAND_BLOCK 0x00000400
#define ZFCP_STATUS_ADAPTER_SCSI_UP \ #define ZFCP_STATUS_ADAPTER_SCSI_UP \
(ZFCP_STATUS_COMMON_UNBLOCKED | \ (ZFCP_STATUS_COMMON_UNBLOCKED | \
...@@ -676,10 +672,7 @@ struct zfcp_adapter { ...@@ -676,10 +672,7 @@ struct zfcp_adapter {
u32 hydra_version; /* Hydra version */ u32 hydra_version; /* Hydra version */
u32 fsf_lic_version; u32 fsf_lic_version;
struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ struct Scsi_Host *scsi_host; /* Pointer to mid-layer */
Scsi_Cmnd *first_fake_cmnd; /* Packets in flight list */
rwlock_t fake_list_lock; /* Lock for the above */
struct timer_list fake_scsi_timer; /* Starts processing of
faked commands */
unsigned char name[9]; unsigned char name[9];
struct list_head port_list_head; /* remote port list */ struct list_head port_list_head; /* remote port list */
struct list_head port_remove_lh; /* head of ports to be struct list_head port_remove_lh; /* head of ports to be
...@@ -692,9 +685,6 @@ struct zfcp_adapter { ...@@ -692,9 +685,6 @@ struct zfcp_adapter {
rwlock_t fsf_req_list_lock; /* lock for ops on list of rwlock_t fsf_req_list_lock; /* lock for ops on list of
FSF requests */ FSF requests */
atomic_t fsf_reqs_active; /* # active FSF reqs */ atomic_t fsf_reqs_active; /* # active FSF reqs */
atomic_t scsi_reqs_active; /* # active SCSI reqs */
wait_queue_head_t scsi_reqs_active_wq; /* can be used to wait for
fsf_reqs_active chngs */
struct zfcp_qdio_queue request_queue; /* request queue */ struct zfcp_qdio_queue request_queue; /* request queue */
u32 fsf_req_seq_no; /* FSF cmnd seq number */ u32 fsf_req_seq_no; /* FSF cmnd seq number */
wait_queue_head_t request_wq; /* can be used to wait for wait_queue_head_t request_wq; /* can be used to wait for
...@@ -765,6 +755,8 @@ struct zfcp_unit { ...@@ -765,6 +755,8 @@ struct zfcp_unit {
struct zfcp_erp_action erp_action; /* pending error recovery */ struct zfcp_erp_action erp_action; /* pending error recovery */
atomic_t erp_counter; atomic_t erp_counter;
struct device sysfs_device; /* sysfs device */ struct device sysfs_device; /* sysfs device */
atomic_t scsi_add_work; /* used to synchronize */
wait_queue_head_t scsi_add_wq; /* wait for scsi_add_device */
}; };
/* FSF request */ /* FSF request */
...@@ -809,6 +801,14 @@ struct zfcp_data { ...@@ -809,6 +801,14 @@ struct zfcp_data {
struct notifier_block reboot_notifier; /* used to register cleanup struct notifier_block reboot_notifier; /* used to register cleanup
functions */ functions */
atomic_t loglevel; /* current loglevel */ atomic_t loglevel; /* current loglevel */
#ifndef MODULE /* initial parameters
needed if ipl from a
scsi device is wanted */
char init_busid[BUS_ID_SIZE];
wwn_t init_wwpn;
fcp_lun_t init_fcp_lun;
int init_is_valid;
#endif
#ifdef ZFCP_STAT_REQSIZES /* Statistical accounting #ifdef ZFCP_STAT_REQSIZES /* Statistical accounting
of processed data */ of processed data */
struct list_head read_req_head; struct list_head read_req_head;
...@@ -857,7 +857,7 @@ struct zfcp_statistics { ...@@ -857,7 +857,7 @@ struct zfcp_statistics {
#ifndef atomic_test_mask #ifndef atomic_test_mask
#define atomic_test_mask(mask, target) \ #define atomic_test_mask(mask, target) \
(atomic_read(target) & mask) ((atomic_read(target) & mask) == mask)
#endif #endif
extern void _zfcp_hex_dump(char *, int); extern void _zfcp_hex_dump(char *, int);
...@@ -957,5 +957,4 @@ zfcp_adapter_wait(struct zfcp_adapter *adapter) ...@@ -957,5 +957,4 @@ zfcp_adapter_wait(struct zfcp_adapter *adapter)
wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0);
} }
#endif /* __KERNEL_- */
#endif /* ZFCP_DEF_H */ #endif /* ZFCP_DEF_H */
drivers/s390/scsi/zfcp_erp.c
View file @ 2eb6e1f3
...@@ -30,7 +30,7 @@ ...@@ -30,7 +30,7 @@
#define ZFCP_LOG_AREA ZFCP_LOG_AREA_ERP #define ZFCP_LOG_AREA ZFCP_LOG_AREA_ERP
#define ZFCP_LOG_AREA_PREFIX ZFCP_LOG_AREA_PREFIX_ERP #define ZFCP_LOG_AREA_PREFIX ZFCP_LOG_AREA_PREFIX_ERP
/* this drivers version (do not edit !!! generated and updated by cvs) */ /* this drivers version (do not edit !!! generated and updated by cvs) */
#define ZFCP_ERP_REVISION "$Revision: 1.33 $" #define ZFCP_ERP_REVISION "$Revision: 1.39 $"
#include "zfcp_ext.h" #include "zfcp_ext.h"
...@@ -108,6 +108,9 @@ static int zfcp_erp_action_dismiss(struct zfcp_erp_action *); ...@@ -108,6 +108,9 @@ static int zfcp_erp_action_dismiss(struct zfcp_erp_action *);
static int zfcp_erp_action_enqueue(int, struct zfcp_adapter *, static int zfcp_erp_action_enqueue(int, struct zfcp_adapter *,
struct zfcp_port *, struct zfcp_unit *); struct zfcp_port *, struct zfcp_unit *);
static int zfcp_erp_action_dequeue(struct zfcp_erp_action *); static int zfcp_erp_action_dequeue(struct zfcp_erp_action *);
static void zfcp_erp_action_cleanup(int, struct zfcp_adapter *,
struct zfcp_port *, struct zfcp_unit *,
int);
static void zfcp_erp_action_ready(struct zfcp_erp_action *); static void zfcp_erp_action_ready(struct zfcp_erp_action *);
static int zfcp_erp_action_exists(struct zfcp_erp_action *); static int zfcp_erp_action_exists(struct zfcp_erp_action *);
...@@ -1160,6 +1163,9 @@ zfcp_erp_strategy(struct zfcp_erp_action *erp_action) ...@@ -1160,6 +1163,9 @@ zfcp_erp_strategy(struct zfcp_erp_action *erp_action)
write_unlock(&adapter->erp_lock); write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags); read_unlock_irqrestore(&zfcp_data.config_lock, flags);
if (retval != ZFCP_ERP_CONTINUES)
zfcp_erp_action_cleanup(action, adapter, port, unit, retval);
/* /*
* a few tasks remain when the erp queues are empty * a few tasks remain when the erp queues are empty
* (don't do that if the last action evaluated was dismissed * (don't do that if the last action evaluated was dismissed
...@@ -1451,6 +1457,66 @@ zfcp_erp_strategy_statechange_detected(atomic_t * target_status, u32 erp_status) ...@@ -1451,6 +1457,66 @@ zfcp_erp_strategy_statechange_detected(atomic_t * target_status, u32 erp_status)
!(ZFCP_STATUS_ERP_CLOSE_ONLY & erp_status)); !(ZFCP_STATUS_ERP_CLOSE_ONLY & erp_status));
} }
/**
* zfcp_erp_scsi_add_device
* @data: pointer to a struct zfcp_unit
*
* Registers a logical unit with the SCSI stack.
*/
static void
zfcp_erp_scsi_add_device(void *data)
{
struct {
struct zfcp_unit *unit;
struct work_struct work;
} *p;
p = data;
scsi_add_device(p->unit->port->adapter->scsi_host,
0, p->unit->port->scsi_id, p->unit->scsi_lun);
atomic_set(&p->unit->scsi_add_work, 0);
wake_up(&p->unit->scsi_add_wq);
zfcp_unit_put(p->unit);
kfree(p);
}
/**
* zfcp_erp_schedule_work
* @unit: pointer to unit which should be registered with SCSI stack
*
* Schedules work which registers a unit with the SCSI stack
*/
static int
zfcp_erp_schedule_work(struct zfcp_unit *unit)
{
struct {
struct zfcp_unit * unit;
struct work_struct work;
} *p;
if (atomic_compare_and_swap(0, 1, &unit->scsi_add_work))
return 0;
if ((p = kmalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
ZFCP_LOG_NORMAL("error: Out of resources. Could not register "
"the FCP-LUN 0x%Lx connected to "
"the port with WWPN 0x%Lx connected to "
"the adapter %s with the SCSI stack.\n",
unit->fcp_lun,
unit->port->wwpn,
zfcp_get_busid_by_unit(unit));
atomic_set(&p->unit->scsi_add_work, 0);
return -ENOMEM;
}
zfcp_unit_get(unit);
memset(p, 0, sizeof(*p));
INIT_WORK(&p->work, zfcp_erp_scsi_add_device, p);
p->unit = unit;
schedule_work(&p->work);
return 0;
}
/* /*
* function: * function:
* *
...@@ -1468,10 +1534,6 @@ zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result) ...@@ -1468,10 +1534,6 @@ zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result)
if (result == ZFCP_ERP_SUCCEEDED) { if (result == ZFCP_ERP_SUCCEEDED) {
atomic_set(&unit->erp_counter, 0); atomic_set(&unit->erp_counter, 0);
zfcp_erp_unit_unblock(unit); zfcp_erp_unit_unblock(unit);
/* register unit with scsi stack */
if (!unit->device)
scsi_add_device(unit->port->adapter->scsi_host,
0, unit->port->scsi_id, unit->scsi_lun);
} else { } else {
/* ZFCP_ERP_FAILED or ZFCP_ERP_EXIT */ /* ZFCP_ERP_FAILED or ZFCP_ERP_EXIT */
atomic_inc(&unit->erp_counter); atomic_inc(&unit->erp_counter);
...@@ -1773,8 +1835,7 @@ zfcp_erp_port_reopen_all_internal(struct zfcp_adapter *adapter, int clear_mask) ...@@ -1773,8 +1835,7 @@ zfcp_erp_port_reopen_all_internal(struct zfcp_adapter *adapter, int clear_mask)
struct zfcp_port *port; struct zfcp_port *port;
list_for_each_entry(port, &adapter->port_list_head, list) list_for_each_entry(port, &adapter->port_list_head, list)
if (atomic_test_mask(ZFCP_STATUS_PORT_NAMESERVER, &port->status) if (!atomic_test_mask(ZFCP_STATUS_PORT_NAMESERVER, &port->status))
!= ZFCP_STATUS_PORT_NAMESERVER)
zfcp_erp_port_reopen_internal(port, clear_mask); zfcp_erp_port_reopen_internal(port, clear_mask);
return retval; return retval;
...@@ -2333,8 +2394,8 @@ zfcp_erp_port_forced_strategy(struct zfcp_erp_action *erp_action) ...@@ -2333,8 +2394,8 @@ zfcp_erp_port_forced_strategy(struct zfcp_erp_action *erp_action)
* open flag is unset - however, this is for readabilty ... * open flag is unset - however, this is for readabilty ...
*/ */
if (atomic_test_mask((ZFCP_STATUS_PORT_PHYS_OPEN | if (atomic_test_mask((ZFCP_STATUS_PORT_PHYS_OPEN |
ZFCP_STATUS_COMMON_OPEN), &port->status) ZFCP_STATUS_COMMON_OPEN),
== (ZFCP_STATUS_PORT_PHYS_OPEN | ZFCP_STATUS_COMMON_OPEN)) { &port->status)) {
ZFCP_LOG_DEBUG("Port wwpn=0x%Lx is open -> trying " ZFCP_LOG_DEBUG("Port wwpn=0x%Lx is open -> trying "
" close physical\n", " close physical\n",
port->wwpn); port->wwpn);
...@@ -2433,8 +2494,7 @@ zfcp_erp_port_strategy_open(struct zfcp_erp_action *erp_action) ...@@ -2433,8 +2494,7 @@ zfcp_erp_port_strategy_open(struct zfcp_erp_action *erp_action)
int retval; int retval;
if (atomic_test_mask(ZFCP_STATUS_PORT_NAMESERVER, if (atomic_test_mask(ZFCP_STATUS_PORT_NAMESERVER,
&erp_action->port->status) &erp_action->port->status))
== ZFCP_STATUS_PORT_NAMESERVER)
retval = zfcp_erp_port_strategy_open_nameserver(erp_action); retval = zfcp_erp_port_strategy_open_nameserver(erp_action);
else else
retval = zfcp_erp_port_strategy_open_common(erp_action); retval = zfcp_erp_port_strategy_open_common(erp_action);
...@@ -3040,6 +3100,12 @@ zfcp_erp_action_enqueue(int action, ...@@ -3040,6 +3100,12 @@ zfcp_erp_action_enqueue(int action,
sizeof (fcp_lun_t)); sizeof (fcp_lun_t));
goto out; goto out;
} }
if (!atomic_test_mask
(ZFCP_STATUS_COMMON_RUNNING, &port->status) ||
atomic_test_mask
(ZFCP_STATUS_COMMON_ERP_FAILED, &port->status)) {
goto out;
}
if (!atomic_test_mask if (!atomic_test_mask
(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status)) { (ZFCP_STATUS_COMMON_UNBLOCKED, &port->status)) {
stronger_action = ZFCP_ERP_ACTION_REOPEN_PORT; stronger_action = ZFCP_ERP_ACTION_REOPEN_PORT;
...@@ -3067,6 +3133,12 @@ zfcp_erp_action_enqueue(int action, ...@@ -3067,6 +3133,12 @@ zfcp_erp_action_enqueue(int action,
sizeof (wwn_t)); sizeof (wwn_t));
goto out; goto out;
} }
if (!atomic_test_mask
(ZFCP_STATUS_COMMON_RUNNING, &adapter->status) ||
atomic_test_mask
(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status)) {
goto out;
}
if (!atomic_test_mask if (!atomic_test_mask
(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status)) { (ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status)) {
stronger_action = ZFCP_ERP_ACTION_REOPEN_ADAPTER; stronger_action = ZFCP_ERP_ACTION_REOPEN_ADAPTER;
...@@ -3178,18 +3250,15 @@ zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action) ...@@ -3178,18 +3250,15 @@ zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
case ZFCP_ERP_ACTION_REOPEN_UNIT: case ZFCP_ERP_ACTION_REOPEN_UNIT:
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE, atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&erp_action->unit->status); &erp_action->unit->status);
zfcp_unit_put(erp_action->unit);
break; break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT: case ZFCP_ERP_ACTION_REOPEN_PORT:
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE, atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&erp_action->port->status); &erp_action->port->status);
zfcp_port_put(erp_action->port);
break; break;
case ZFCP_ERP_ACTION_REOPEN_ADAPTER: case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE, atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&erp_action->adapter->status); &erp_action->adapter->status);
zfcp_adapter_put(adapter);
break; break;
default: default:
/* bug */ /* bug */
...@@ -3198,6 +3267,39 @@ zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action) ...@@ -3198,6 +3267,39 @@ zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
return retval; return retval;
} }
/**
* zfcp_erp_action_cleanup
*
* registers unit with scsi stack if appropiate and fixes reference counts
*/
static void
zfcp_erp_action_cleanup(int action, struct zfcp_adapter *adapter,
struct zfcp_port *port, struct zfcp_unit *unit,
int result)
{
if ((action == ZFCP_ERP_ACTION_REOPEN_UNIT)
&& (result == ZFCP_ERP_SUCCEEDED)
&& (!unit->device)) {
zfcp_erp_schedule_work(unit);
}
switch (action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
zfcp_unit_put(unit);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT:
zfcp_port_put(port);
break;
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
zfcp_adapter_put(adapter);
break;
default:
break;
}
}
/* /*
* function: * function:
* *
......
drivers/s390/scsi/zfcp_ext.h
View file @ 2eb6e1f3
...@@ -30,9 +30,7 @@ ...@@ -30,9 +30,7 @@
#ifndef ZFCP_EXT_H #ifndef ZFCP_EXT_H
#define ZFCP_EXT_H #define ZFCP_EXT_H
/* this drivers version (do not edit !!! generated and updated by cvs) */ /* this drivers version (do not edit !!! generated and updated by cvs) */
#define ZFCP_EXT_REVISION "$Revision: 1.33 $" #define ZFCP_EXT_REVISION "$Revision: 1.38 $"
#ifdef __KERNEL__
#include "zfcp_def.h" #include "zfcp_def.h"
...@@ -44,7 +42,9 @@ extern void zfcp_sysfs_driver_remove_files(struct device_driver *); ...@@ -44,7 +42,9 @@ extern void zfcp_sysfs_driver_remove_files(struct device_driver *);
extern int zfcp_sysfs_adapter_create_files(struct device *); extern int zfcp_sysfs_adapter_create_files(struct device *);
extern void zfcp_sysfs_adapter_remove_files(struct device *); extern void zfcp_sysfs_adapter_remove_files(struct device *);
extern int zfcp_sysfs_port_create_files(struct device *, u32); extern int zfcp_sysfs_port_create_files(struct device *, u32);
extern void zfcp_sysfs_port_remove_files(struct device *, u32);
extern int zfcp_sysfs_unit_create_files(struct device *); extern int zfcp_sysfs_unit_create_files(struct device *);
extern void zfcp_sysfs_unit_remove_files(struct device *);
extern void zfcp_sysfs_port_release(struct device *); extern void zfcp_sysfs_port_release(struct device *);
extern int zfcp_sysfs_port_shutdown(struct zfcp_port *); extern int zfcp_sysfs_port_shutdown(struct zfcp_port *);
extern void zfcp_sysfs_unit_release(struct device *); extern void zfcp_sysfs_unit_release(struct device *);
...@@ -112,9 +112,6 @@ extern void zfcp_fsf_els_processing(struct zfcp_fsf_req *); ...@@ -112,9 +112,6 @@ extern void zfcp_fsf_els_processing(struct zfcp_fsf_req *);
extern int zfcp_adapter_scsi_register(struct zfcp_adapter *); extern int zfcp_adapter_scsi_register(struct zfcp_adapter *);
extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *); extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
extern void zfcp_scsi_block_requests(struct Scsi_Host *); extern void zfcp_scsi_block_requests(struct Scsi_Host *);
extern void zfcp_scsi_insert_into_fake_queue(struct zfcp_adapter *,
Scsi_Cmnd *);
extern void zfcp_scsi_process_and_clear_fake_queue(unsigned long);
extern int zfcp_create_sbals_from_sg(struct zfcp_fsf_req *, extern int zfcp_create_sbals_from_sg(struct zfcp_fsf_req *,
Scsi_Cmnd *, char, int, int); Scsi_Cmnd *, char, int, int);
extern void zfcp_set_fcp_dl(struct fcp_cmnd_iu *, fcp_dl_t); extern void zfcp_set_fcp_dl(struct fcp_cmnd_iu *, fcp_dl_t);
...@@ -159,5 +156,4 @@ extern void zfcp_in_els_dbf_event(struct zfcp_adapter *, const char *, ...@@ -159,5 +156,4 @@ extern void zfcp_in_els_dbf_event(struct zfcp_adapter *, const char *,
#ifdef ZFCP_STAT_REQSIZES #ifdef ZFCP_STAT_REQSIZES
extern int zfcp_statistics_inc(struct list_head *, u32); extern int zfcp_statistics_inc(struct list_head *, u32);
#endif #endif
#endif /* __KERNEL__ */
#endif /* ZFCP_EXT_H */ #endif /* ZFCP_EXT_H */
drivers/s390/scsi/zfcp_fsf.c
View file @ 2eb6e1f3
This diff is collapsed.
drivers/s390/scsi/zfcp_fsf.h
View file @ 2eb6e1f3
...@@ -30,8 +30,6 @@ ...@@ -30,8 +30,6 @@
#ifndef FSF_H #ifndef FSF_H
#define FSF_H #define FSF_H
#ifdef __KERNEL__
#define FSF_QTCB_VERSION1 0x00000001 #define FSF_QTCB_VERSION1 0x00000001
#define FSF_QTCB_CURRENT_VERSION FSF_QTCB_VERSION1 #define FSF_QTCB_CURRENT_VERSION FSF_QTCB_VERSION1
...@@ -354,5 +352,4 @@ struct fsf_qtcb { ...@@ -354,5 +352,4 @@ struct fsf_qtcb {
union fsf_qtcb_bottom bottom; union fsf_qtcb_bottom bottom;
} __attribute__ ((packed)); } __attribute__ ((packed));
#endif /* __KERNEL__ */
#endif /* FSF_H */ #endif /* FSF_H */
drivers/s390/scsi/zfcp_qdio.c
View file @ 2eb6e1f3
...@@ -27,7 +27,7 @@ ...@@ -27,7 +27,7 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#define ZFCP_QDIO_C_REVISION "$Revision: 1.7 $" #define ZFCP_QDIO_C_REVISION "$Revision: 1.10 $"
#include "zfcp_ext.h" #include "zfcp_ext.h"
...@@ -214,7 +214,7 @@ zfcp_qdio_handler_error_check(struct zfcp_adapter *adapter, ...@@ -214,7 +214,7 @@ zfcp_qdio_handler_error_check(struct zfcp_adapter *adapter,
" QDIO_STATUS_OUTBOUND_INT \n"); " QDIO_STATUS_OUTBOUND_INT \n");
} }
} // if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_TRACE)) } // if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_TRACE))
if (status & QDIO_STATUS_LOOK_FOR_ERROR) { if (unlikely(status & QDIO_STATUS_LOOK_FOR_ERROR)) {
retval = -EIO; retval = -EIO;
ZFCP_LOG_FLAGS(1, "QDIO_STATUS_LOOK_FOR_ERROR \n"); ZFCP_LOG_FLAGS(1, "QDIO_STATUS_LOOK_FOR_ERROR \n");
...@@ -261,7 +261,17 @@ zfcp_qdio_handler_error_check(struct zfcp_adapter *adapter, ...@@ -261,7 +261,17 @@ zfcp_qdio_handler_error_check(struct zfcp_adapter *adapter,
} }
/* Restarting IO on the failed adapter from scratch */ /* Restarting IO on the failed adapter from scratch */
debug_text_event(adapter->erp_dbf, 1, "qdio_err"); debug_text_event(adapter->erp_dbf, 1, "qdio_err");
zfcp_erp_adapter_reopen(adapter, 0); /*
* Since we have been using this adapter, it is save to assume
* that it is not failed but recoverable. The card seems to
* report link-up events by self-initiated queue shutdown.
* That is why we need to clear the the link-down flag
* which is set again in case we have missed by a mile.
*/
zfcp_erp_adapter_reopen(
adapter,
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
ZFCP_STATUS_COMMON_ERP_FAILED);
} }
return retval; return retval;
} }
...@@ -293,8 +303,8 @@ zfcp_qdio_request_handler(struct ccw_device *ccw_device, ...@@ -293,8 +303,8 @@ zfcp_qdio_request_handler(struct ccw_device *ccw_device,
zfcp_get_busid_by_adapter(adapter), zfcp_get_busid_by_adapter(adapter),
first_element, elements_processed); first_element, elements_processed);
if (zfcp_qdio_handler_error_check(adapter, status, qdio_error, if (unlikely(zfcp_qdio_handler_error_check(adapter, status, qdio_error,
siga_error)) siga_error)))
goto out; goto out;
/* /*
* we stored address of struct zfcp_adapter data structure * we stored address of struct zfcp_adapter data structure
...@@ -345,8 +355,8 @@ zfcp_qdio_response_handler(struct ccw_device *ccw_device, ...@@ -345,8 +355,8 @@ zfcp_qdio_response_handler(struct ccw_device *ccw_device,
adapter = (struct zfcp_adapter *) int_parm; adapter = (struct zfcp_adapter *) int_parm;
queue = &adapter->response_queue; queue = &adapter->response_queue;
if (zfcp_qdio_handler_error_check(adapter, status, qdio_error, if (unlikely(zfcp_qdio_handler_error_check(adapter, status, qdio_error,
siga_error)) siga_error)))
goto out; goto out;
/* /*
...@@ -394,11 +404,17 @@ zfcp_qdio_response_handler(struct ccw_device *ccw_device, ...@@ -394,11 +404,17 @@ zfcp_qdio_response_handler(struct ccw_device *ccw_device,
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
(char *) buffer, SBAL_SIZE); (char *) buffer, SBAL_SIZE);
} }
if (buffere->flags & SBAL_FLAGS_LAST_ENTRY) /*
* A single used SBALE per inbound SBALE has been
* implemented by QDIO so far. Hope they will
* do some optimisation. Will need to change to
* unlikely() then.
*/
if (likely(buffere->flags & SBAL_FLAGS_LAST_ENTRY))
break; break;
}; };
if (!buffere->flags & SBAL_FLAGS_LAST_ENTRY) { if (unlikely(!(buffere->flags & SBAL_FLAGS_LAST_ENTRY))) {
ZFCP_LOG_NORMAL("bug: End of inbound data " ZFCP_LOG_NORMAL("bug: End of inbound data "
"not marked!\n"); "not marked!\n");
} }
...@@ -421,7 +437,7 @@ zfcp_qdio_response_handler(struct ccw_device *ccw_device, ...@@ -421,7 +437,7 @@ zfcp_qdio_response_handler(struct ccw_device *ccw_device,
QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT, QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
0, start, count, NULL); 0, start, count, NULL);
if (retval) { if (unlikely(retval)) {
atomic_set(&queue->free_count, count); atomic_set(&queue->free_count, count);
ZFCP_LOG_DEBUG("Inbound data regions could not be cleared " ZFCP_LOG_DEBUG("Inbound data regions could not be cleared "
"Transfer queues may be down. " "Transfer queues may be down. "
...@@ -458,7 +474,7 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr) ...@@ -458,7 +474,7 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr)
#endif /* ZFCP_DEBUG_REQUESTS */ #endif /* ZFCP_DEBUG_REQUESTS */
/* invalid (per convention used in this driver) */ /* invalid (per convention used in this driver) */
if (!sbale_addr) { if (unlikely(!sbale_addr)) {
ZFCP_LOG_NORMAL ZFCP_LOG_NORMAL
("bug: Inbound data faulty, contains null-pointer!\n"); ("bug: Inbound data faulty, contains null-pointer!\n");
retval = -EINVAL; retval = -EINVAL;
...@@ -468,8 +484,8 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr) ...@@ -468,8 +484,8 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr)
/* valid request id and thus (hopefully :) valid fsf_req address */ /* valid request id and thus (hopefully :) valid fsf_req address */
fsf_req = (struct zfcp_fsf_req *) sbale_addr; fsf_req = (struct zfcp_fsf_req *) sbale_addr;
if ((fsf_req->common_magic != ZFCP_MAGIC) || if (unlikely((fsf_req->common_magic != ZFCP_MAGIC) ||
(fsf_req->specific_magic != ZFCP_MAGIC_FSFREQ)) { (fsf_req->specific_magic != ZFCP_MAGIC_FSFREQ))) {
ZFCP_LOG_NORMAL("bug: An inbound FSF acknowledgement was " ZFCP_LOG_NORMAL("bug: An inbound FSF acknowledgement was "
"faulty (debug info 0x%x, 0x%x, 0x%lx)\n", "faulty (debug info 0x%x, 0x%x, 0x%lx)\n",
fsf_req->common_magic, fsf_req->common_magic,
...@@ -479,7 +495,7 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr) ...@@ -479,7 +495,7 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr)
goto out; goto out;
} }
if (adapter != fsf_req->adapter) { if (unlikely(adapter != fsf_req->adapter)) {
ZFCP_LOG_NORMAL("bug: An inbound FSF acknowledgement was not " ZFCP_LOG_NORMAL("bug: An inbound FSF acknowledgement was not "
"correct (debug info 0x%lx, 0x%lx, 0%lx) \n", "correct (debug info 0x%lx, 0x%lx, 0%lx) \n",
(unsigned long) fsf_req, (unsigned long) fsf_req,
...@@ -490,7 +506,7 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr) ...@@ -490,7 +506,7 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr)
} }
#ifdef ZFCP_DEBUG_REQUESTS #ifdef ZFCP_DEBUG_REQUESTS
/* debug feature stuff (test for QTCB: remember new unsol. status!) */ /* debug feature stuff (test for QTCB: remember new unsol. status!) */
if (fsf_req->qtcb) { if (likely(fsf_req->qtcb)) {
debug_event(adapter->req_dbf, 1, debug_event(adapter->req_dbf, 1,
&fsf_req->qtcb->prefix.req_seq_no, sizeof (u32)); &fsf_req->qtcb->prefix.req_seq_no, sizeof (u32));
} }
...@@ -498,7 +514,7 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr) ...@@ -498,7 +514,7 @@ zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, void *sbale_addr)
ZFCP_LOG_TRACE("fsf_req at 0x%lx, QTCB at 0x%lx\n", ZFCP_LOG_TRACE("fsf_req at 0x%lx, QTCB at 0x%lx\n",
(unsigned long) fsf_req, (unsigned long) fsf_req->qtcb); (unsigned long) fsf_req, (unsigned long) fsf_req->qtcb);
if (fsf_req->qtcb) { if (likely(fsf_req->qtcb)) {
ZFCP_LOG_TRACE("HEX DUMP OF 1ST BUFFERE PAYLOAD (QTCB):\n"); ZFCP_LOG_TRACE("HEX DUMP OF 1ST BUFFERE PAYLOAD (QTCB):\n");
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE,
(char *) fsf_req->qtcb, ZFCP_QTCB_SIZE); (char *) fsf_req->qtcb, ZFCP_QTCB_SIZE);
...@@ -519,7 +535,7 @@ zfcp_qdio_determine_pci(struct zfcp_qdio_queue *req_queue, ...@@ -519,7 +535,7 @@ zfcp_qdio_determine_pci(struct zfcp_qdio_queue *req_queue,
new_distance_from_int = req_queue->distance_from_int + new_distance_from_int = req_queue->distance_from_int +
fsf_req->sbal_count; fsf_req->sbal_count;
if (new_distance_from_int >= ZFCP_QDIO_PCI_INTERVAL) { if (unlikely(new_distance_from_int >= ZFCP_QDIO_PCI_INTERVAL)) {
new_distance_from_int %= ZFCP_QDIO_PCI_INTERVAL; new_distance_from_int %= ZFCP_QDIO_PCI_INTERVAL;
pci_pos = fsf_req->sbal_index; pci_pos = fsf_req->sbal_index;
pci_pos += fsf_req->sbal_count; pci_pos += fsf_req->sbal_count;
......
drivers/s390/scsi/zfcp_scsi.c
View file @ 2eb6e1f3
This diff is collapsed.
drivers/s390/scsi/zfcp_sysfs_adapter.c
View file @ 2eb6e1f3
...@@ -25,7 +25,7 @@ ...@@ -25,7 +25,7 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#define ZFCP_SYSFS_ADAPTER_C_REVISION "$Revision: 1.21 $" #define ZFCP_SYSFS_ADAPTER_C_REVISION "$Revision: 1.26 $"
#include <asm/ccwdev.h> #include <asm/ccwdev.h>
#include "zfcp_ext.h" #include "zfcp_ext.h"
...@@ -155,11 +155,8 @@ zfcp_sysfs_port_add_store(struct device *dev, const char *buf, size_t count) ...@@ -155,11 +155,8 @@ zfcp_sysfs_port_add_store(struct device *dev, const char *buf, size_t count)
retval = 0; retval = 0;
zfcp_adapter_get(adapter); zfcp_erp_port_reopen(port, 0);
zfcp_erp_wait(port->adapter);
/* try to open port only if adapter is online */
if (adapter->ccw_device->online == 1)
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED);
zfcp_port_put(port); zfcp_port_put(port);
out: out:
up(&zfcp_data.config_sema); up(&zfcp_data.config_sema);
...@@ -219,6 +216,8 @@ zfcp_sysfs_port_remove_store(struct device *dev, const char *buf, size_t count) ...@@ -219,6 +216,8 @@ zfcp_sysfs_port_remove_store(struct device *dev, const char *buf, size_t count)
zfcp_erp_port_shutdown(port, 0); zfcp_erp_port_shutdown(port, 0);
zfcp_erp_wait(adapter); zfcp_erp_wait(adapter);
zfcp_port_put(port); zfcp_port_put(port);
zfcp_sysfs_port_remove_files(&port->sysfs_device,
atomic_read(&port->status));
device_unregister(&port->sysfs_device); device_unregister(&port->sysfs_device);
out: out:
up(&zfcp_data.config_sema); up(&zfcp_data.config_sema);
...@@ -268,6 +267,7 @@ zfcp_sysfs_adapter_failed_store(struct device *dev, ...@@ -268,6 +267,7 @@ zfcp_sysfs_adapter_failed_store(struct device *dev,
zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING, zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET); ZFCP_SET);
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED); zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
zfcp_erp_wait(adapter);
out: out:
up(&zfcp_data.config_sema); up(&zfcp_data.config_sema);
return retval ? retval : count; return retval ? retval : count;
......
drivers/s390/scsi/zfcp_sysfs_port.c
View file @ 2eb6e1f3
...@@ -25,7 +25,7 @@ ...@@ -25,7 +25,7 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#define ZFCP_SYSFS_PORT_C_REVISION "$Revision: 1.26 $" #define ZFCP_SYSFS_PORT_C_REVISION "$Revision: 1.32 $"
#include <linux/init.h> #include <linux/init.h>
#include <linux/module.h> #include <linux/module.h>
...@@ -110,11 +110,9 @@ zfcp_sysfs_unit_add_store(struct device *dev, const char *buf, size_t count) ...@@ -110,11 +110,9 @@ zfcp_sysfs_unit_add_store(struct device *dev, const char *buf, size_t count)
retval = 0; retval = 0;
zfcp_port_get(port); zfcp_erp_unit_reopen(unit, 0);
zfcp_erp_wait(unit->port->adapter);
/* try to open unit only if adapter is online */ wait_event(unit->scsi_add_wq, atomic_read(&unit->scsi_add_work) == 0);
if (port->adapter->ccw_device->online == 1)
zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED);
zfcp_unit_put(unit); zfcp_unit_put(unit);
out: out:
up(&zfcp_data.config_sema); up(&zfcp_data.config_sema);
...@@ -170,6 +168,7 @@ zfcp_sysfs_unit_remove_store(struct device *dev, const char *buf, size_t count) ...@@ -170,6 +168,7 @@ zfcp_sysfs_unit_remove_store(struct device *dev, const char *buf, size_t count)
zfcp_erp_unit_shutdown(unit, 0); zfcp_erp_unit_shutdown(unit, 0);
zfcp_erp_wait(unit->port->adapter); zfcp_erp_wait(unit->port->adapter);
zfcp_unit_put(unit); zfcp_unit_put(unit);
zfcp_sysfs_unit_remove_files(&unit->sysfs_device);
device_unregister(&unit->sysfs_device); device_unregister(&unit->sysfs_device);
out: out:
up(&zfcp_data.config_sema); up(&zfcp_data.config_sema);
...@@ -217,6 +216,7 @@ zfcp_sysfs_port_failed_store(struct device *dev, const char *buf, size_t count) ...@@ -217,6 +216,7 @@ zfcp_sysfs_port_failed_store(struct device *dev, const char *buf, size_t count)
} }
zfcp_erp_modify_port_status(port, ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET); zfcp_erp_modify_port_status(port, ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED); zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED);
zfcp_erp_wait(port->adapter);
out: out:
up(&zfcp_data.config_sema); up(&zfcp_data.config_sema);
return retval ? retval : count; return retval ? retval : count;
...@@ -293,7 +293,7 @@ static struct attribute_group zfcp_port_no_ns_attr_group = { ...@@ -293,7 +293,7 @@ static struct attribute_group zfcp_port_no_ns_attr_group = {
}; };
/** /**
* zfcp_sysfs_create_port_files - create sysfs port files * zfcp_sysfs_port_create_files - create sysfs port files
* @dev: pointer to belonging device * @dev: pointer to belonging device
* *
* Create all attributes of the sysfs representation of a port. * Create all attributes of the sysfs representation of a port.
...@@ -315,5 +315,19 @@ zfcp_sysfs_port_create_files(struct device *dev, u32 flags) ...@@ -315,5 +315,19 @@ zfcp_sysfs_port_create_files(struct device *dev, u32 flags)
return retval; return retval;
} }
/**
* zfcp_sysfs_port_remove_files - remove sysfs port files
* @dev: pointer to belonging device
*
* Remove all attributes of the sysfs representation of a port.
*/
void
zfcp_sysfs_port_remove_files(struct device *dev, u32 flags)
{
sysfs_remove_group(&dev->kobj, &zfcp_port_common_attr_group);
if (!(flags & ZFCP_STATUS_PORT_NAMESERVER))
sysfs_remove_group(&dev->kobj, &zfcp_port_no_ns_attr_group);
}
#undef ZFCP_LOG_AREA #undef ZFCP_LOG_AREA
#undef ZFCP_LOG_AREA_PREFIX #undef ZFCP_LOG_AREA_PREFIX
drivers/s390/scsi/zfcp_sysfs_unit.c
View file @ 2eb6e1f3
...@@ -25,7 +25,7 @@ ...@@ -25,7 +25,7 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#define ZFCP_SYSFS_UNIT_C_REVISION "$Revision: 1.17 $" #define ZFCP_SYSFS_UNIT_C_REVISION "$Revision: 1.19 $"
#include <linux/init.h> #include <linux/init.h>
#include <linux/module.h> #include <linux/module.h>
...@@ -186,5 +186,17 @@ zfcp_sysfs_unit_create_files(struct device *dev) ...@@ -186,5 +186,17 @@ zfcp_sysfs_unit_create_files(struct device *dev)
return sysfs_create_group(&dev->kobj, &zfcp_unit_attr_group); return sysfs_create_group(&dev->kobj, &zfcp_unit_attr_group);
} }
/**
* zfcp_sysfs_remove_unit_files - remove sysfs unit files
* @dev: pointer to belonging device
*
* Remove all attributes of the sysfs representation of a unit.
*/
void
zfcp_sysfs_unit_remove_files(struct device *dev)
{
sysfs_remove_group(&dev->kobj, &zfcp_unit_attr_group);
}
#undef ZFCP_LOG_AREA #undef ZFCP_LOG_AREA
#undef ZFCP_LOG_AREA_PREFIX #undef ZFCP_LOG_AREA_PREFIX
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