From 23edb6e71696a5da9c5f3987d22221e12370dbce Mon Sep 17 00:00:00 2001 From: "nagalakshmi.nandigama@lsi.com" Date: Thu, 1 Dec 2011 07:43:50 +0530 Subject: [SCSI] mpt2sas: Do not set sas_device->starget to NULL from the slave_destroy callback when all the LUNS have been deleted 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 Signed-off-by: James Bottomley --- drivers/scsi/mpt2sas/mpt2sas_scsih.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) (limited to 'drivers/scsi/mpt2sas') diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index 5060634f7651..a9efc4551086 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -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); } -- cgit v1.2.3