[SCSI] zfcp: wait on SCSI work to be finished before proceeding with init dev
Due to the character of a scheduled work we cannot guarantee the LUN register to be finished before an initial device tries to use it. Therefor we have to wait for PENDING_SCSI_WORK flag to be cleared before proceeding. Signed-off-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>
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@ -129,7 +129,12 @@ static void __init zfcp_init_device_configure(void)
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goto out_unit;
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up(&zfcp_data.config_sema);
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ccw_device_set_online(adapter->ccw_device);
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zfcp_erp_wait(adapter);
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wait_event(adapter->erp_done_wqh,
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!(atomic_read(&unit->status) &
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ZFCP_STATUS_UNIT_SCSI_WORK_PENDING));
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down(&zfcp_data.config_sema);
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zfcp_unit_put(unit);
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out_unit:
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@ -1189,6 +1189,7 @@ static void zfcp_erp_scsi_scan(struct work_struct *work)
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scsilun_to_int((struct scsi_lun *)&unit->fcp_lun), 0);
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atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
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zfcp_unit_put(unit);
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wake_up(&unit->port->adapter->erp_done_wqh);
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kfree(p);
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}
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