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[SCSI] zfcp: Remove UNIT_REGISTERED status flag 

Use the device pointer in zfcp_unit for tracking if we have a
registered SCSI device. With this approach, the flag
ZFCP_STATUS_UNIT_REGISTERED is only redundant and can be removed.

Acked-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Christof Schmitt 2009-03-02 13:08:55 +01:00 committed by James Bottomley
parent a5b11dda12
commit 86f8a1b4b4
4 changed files with 2 additions and 8 deletions
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3
drivers/s390/scsi/zfcp_ccw.c
View File

@ -72,8 +72,7 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device)
list_for_each_entry_safe(port, p, &port_remove_lh, list) {
list_for_each_entry_safe(unit, u, &unit_remove_lh, list) {
if (atomic_read(&unit->status) &
ZFCP_STATUS_UNIT_REGISTERED)
if (unit->device)
scsi_remove_device(unit->device);
zfcp_unit_dequeue(unit);
}

1
drivers/s390/scsi/zfcp_def.h
View File

@ -255,7 +255,6 @@ enum zfcp_wka_status {
/* logical unit status */
#define ZFCP_STATUS_UNIT_SHARED 0x00000004
#define ZFCP_STATUS_UNIT_READONLY 0x00000008
#define ZFCP_STATUS_UNIT_REGISTERED 0x00000010
#define ZFCP_STATUS_UNIT_SCSI_WORK_PENDING 0x00000020
/* FSF request status (this does not have a common part) */

2
drivers/s390/scsi/zfcp_erp.c
View File

@ -1250,8 +1250,6 @@ static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
case ZFCP_ERP_ACTION_REOPEN_UNIT:
if ((result == ZFCP_ERP_SUCCEEDED) &&
!unit->device && port->rport) {
atomic_set_mask(ZFCP_STATUS_UNIT_REGISTERED,
&unit->status);
if (!(atomic_read(&unit->status) &
ZFCP_STATUS_UNIT_SCSI_WORK_PENDING))
zfcp_erp_schedule_work(unit);

4
drivers/s390/scsi/zfcp_scsi.c
View File

@ -27,7 +27,6 @@ char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu)
static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
{
struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
atomic_clear_mask(ZFCP_STATUS_UNIT_REGISTERED, &unit->status);
unit->device = NULL;
zfcp_erp_unit_failed(unit, 12, NULL);
zfcp_unit_put(unit);
@ -133,8 +132,7 @@ static int zfcp_scsi_slave_alloc(struct scsi_device *sdp)
read_lock_irqsave(&zfcp_data.config_lock, flags);
unit = zfcp_unit_lookup(adapter, sdp->channel, sdp->id, sdp->lun);
if (unit &&
(atomic_read(&unit->status) & ZFCP_STATUS_UNIT_REGISTERED)) {
if (unit) {
sdp->hostdata = unit;
unit->device = sdp;
zfcp_unit_get(unit);