linux-toradex.git/drivers/scsi/device_handler/scsi_dh_rdac.c, branch v3.10.12

[SCSI] scsi_dh_rdac : minor return fix for rdac

2012-09-24T08:11:03+00:00

Signed-off-by: Babu Moger 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac : Consolidate rdac strings together

2012-09-24T08:11:03+00:00

This patch consolidates the strings together. Purpose is to remove minor product strings extensions.
That way the future products with similar strings should not require change  here.

Signed-off-by: Babu Moger 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: Add a new netapp vendor/product string

2012-09-24T08:11:03+00:00

This patch adds a new vendor/product strings for netapp E series  product.
Also consolidated the strings together with similar names.

Signed-off-by: Babu Moger 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: Fix for unbalanced reference count

2012-02-22T18:15:19+00:00

This patch fixes an unbalanced refcount issue.

Elevating the lock for both kref_put and also for controller node deletion.
Previously, controller deletion was protected but the not the kref_put. This
was causing the other thread to pick up the controller structure which was
already kref'd zero.

This was causing the following WARN_ON and also sometimes panic.

WARNING: at lib/kref.c:43 kref_get+0x2d/0x30() (Not tainted)
Hardware name: IBM System x3655 -[7985AC1]-
Modules linked in: fuse scsi_dh_rdac autofs4 nfs lockd fscache nfs_acl
auth_rpcgss sunrpc 8021q garp stp llc ipv6 ib_srp(U) scsi_transport_srp
scsi_tgt ib_cm(U) ib_sa(U) ib_uverbs(U) ib_umad(U) mlx4_ib(U) mlx4_core(U)
ib_mthca(U) ib_mad(U) ib_core(U) dm_mirror dm_region_hash dm_log dm_round_robin
dm_multipath uinput bnx2 ses enclosure sg ibmpex ibmaem ipmi_msghandler
serio_raw k8temp hwmon amd64_edac_mod edac_core edac_mce_amd shpchp i2c_piix4
ext4 mbcache jbd2 sr_mod cdrom sd_mod crc_t10dif sata_svw pata_acpi ata_generic
pata_serverworks aacraid radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core
dm_mod [last unloaded: freq_table]
Pid: 13735, comm: srp_daemon Not tainted 2.6.32-71.el6.x86_64 #1
Call Trace:
[] warn_slowpath_common+0x87/0xc0
[] warn_slowpath_null+0x1a/0x20
[] kref_get+0x2d/0x30
[] rdac_bus_attach+0x459/0x580 [scsi_dh_rdac]
[] scsi_dh_handler_attach+0x2a/0x80
[] scsi_dh_notifier+0x9b/0xa0
[] notifier_call_chain+0x55/0x80
[] __blocking_notifier_call_chain+0x5a/0x80
[] blocking_notifier_call_chain+0x16/0x20
[] device_add+0x515/0x640
[] ? attribute_container_device_trigger+0xc4/0xe0
[] scsi_sysfs_add_sdev+0x89/0x2c0
[] scsi_probe_and_add_lun+0xea6/0xed0
[] ? scsi_alloc_target+0x292/0x2d0
[] __scsi_scan_target+0x121/0x750
[] ? sysfs_create_file+0x26/0x30
[] ? device_create_file+0x19/0x20
[] ? attribute_container_add_attrs+0x78/0x90
[] ? klist_next+0x4c/0xf0
[] ? transport_configure+0x0/0x20
[] ? attribute_container_device_trigger+0xc4/0xe0
[] scsi_scan_target+0xd0/0xe0
[] srp_create_target+0x75a/0x890 [ib_srp]
[] dev_attr_store+0x20/0x30
[] sysfs_write_file+0xe5/0x170
[] vfs_write+0xb8/0x1a0
[] ? audit_syscall_entry+0x272/0x2a0
[] sys_write+0x51/0x90
[] system_call_fastpath+0x16/0x1b

Signed-off-by: Babu Moger 
Acked-by: Mike Snitzer 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: Fix error path

2012-01-10T23:01:18+00:00

If create_singlethread_workqueue() failes, rdac_init should fail too.

Signed-off-by: Richard Weinberger 
Acked-by: "Moger, Babu" 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: Adding the match function for rdac device handler

2011-12-15T06:55:00+00:00

This patch introduces the match function for rdac device handler. Without
this, sometimes handler attach fails during the device_add. Included check for
TPGS bit before proceeding further. The match function was introduced by
commit 6c3633d08acf514e2e89aa95d2346ce9d64d719a

Signed-off-by: Babu Moger 
Acked-by: Hannes Reinecke 
Signed-off-by: James Bottomley

scsi: Fix up files implicitly depending on module.h inclusion

2011-10-31T23:31:24+00:00

The module.h header was implicitly present everywhere, so files
with no explicit include of the module infrastructure would build
anyway.  We are now removing the implicit include, and so we need
to call out the module.h file that we need explicitly.

Signed-off-by: Paul Gortmaker

[SCSI] scsi_dh_rdac: Adding NetApp as a brand name for rdac

2011-09-22T11:26:43+00:00

Signed-off-by: Vijay Chauhan 
Reviewed-by: Bob Stankey 
Reviewed-by: Babu Moger 
Acked-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: Adding couple more vendor product ids

2011-09-22T11:02:57+00:00

This patch adds couple more Vendor/Product IDs for RDAC.. There are no
functional changes.

Signed-off-by: Babu Moger 
Signed-off-by: James Bottomley

[SCSI] dh_rdac: Associate HBA and storage in rdac_controller to support partitions in storage

2011-07-28T07:38:47+00:00

rdac hardware handler assumes that there is one-to-one relation ship
between the host and the controller w.r.t lun.  IOW, it does not
support "multiple storage partitions" within a storage.

Example:
HBA1 and HBA2 see lun 0 and 1 in storage A (1)
HBA3 and HBA4 see lun 0 and 1 in storage A (2)
HBA5 and HBA6 see lun 0 and 1 in storage A (3)

luns 0 and 1 in (1), (2) and (3) are totally different.

But, rdac handler treats the lun 0s (and lun 1s) as the same when
sending a mode select to the controller, which is wrong.

This patch makes the rdac hardware handler associate HBA and the
storage w.r.t lun (and not the host itself).

Signed-off-by: Chandra Seetharaman 
Signed-off-by: James Bottomley