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[SCSI] mpt2sas: Do not set sas_device->starget to NULL from the slave_destroy callback when all the LUNS have been deleted

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If the sas_device->starget to NULL from slave_destroy callback for LUN=1
even though LUN=0 exist, results in entire target getting deleted.
To resolve the issue, the driver should only set sas_device->starget to
NULL when all the LUNS have been deleted from the slave_destroy.

Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
nagalakshmi.nandigama@lsi.com 2011-12-01 07:43:50 +05:30 committed by James Bottomley
parent c1bc0704e5
commit 23edb6e716
1 changed files with 12 additions and 8 deletions
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20
drivers/scsi/mpt2sas/mpt2sas_scsih.c
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@ -612,13 +612,17 @@ _scsih_sas_device_add(struct MPT2SAS_ADAPTER *ioc,
if (!mpt2sas_transport_port_add(ioc, sas_device->handle,
sas_device->sas_address_parent)) {
_scsih_sas_device_remove(ioc, sas_device);
} else if (!sas_device->starget) {
if (!ioc->is_driver_loading)
mpt2sas_transport_port_remove(ioc,
sas_device->sas_address,
sas_device->sas_address_parent);
_scsih_sas_device_remove(ioc, sas_device);
}
} else if (!sas_device->starget) {
/* When asyn scanning is enabled, its not possible to remove
* devices while scanning is turned on due to an oops in
* scsi_sysfs_add_sdev()->add_device()->sysfs_addrm_start()
*/
if (!ioc->is_driver_loading)
mpt2sas_transport_port_remove(ioc,
sas_device->sas_address,
sas_device->sas_address_parent);
_scsih_sas_device_remove(ioc, sas_device);
}
}
/**
@ -1449,7 +1453,7 @@ _scsih_slave_destroy(struct scsi_device *sdev)
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
sas_target_priv_data->sas_address);
if (sas_device)
if (sas_device && !sas_target_priv_data->num_luns)
sas_device->starget = NULL;
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}