linux/drivers/scsi/device_handler, branch v3.4.55

SCSI: scsi_dh_alua: Enable STPG for unavailable ports

2012-10-07T15:32:29Z

commit e47f8976d8e573928824a06748f7bc82c58d747f upstream. A quote from SPC-4: "While in the unavailable primary target port asymmetric access state, the device server shall support those of the following commands that it supports while in the active/optimized state: [ ... ] d) SET TARGET PORT GROUPS; [ ... ]". Hence enable sending STPG to a target port group that is in the unavailable state. Signed-off-by: Bart Van Assche Reviewed-by: Mike Christie Acked-by: Hannes Reinecke Signed-off-by: James Bottomley Signed-off-by: Greg Kroah-Hartman

[SCSI] scsi_dh_rdac: Fix for unbalanced reference count

2012-02-22T18:15:19Z

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_alua: Retry the check-condition in case Mode Parameters Changed

2012-01-10T23:01:24Z

This patch adds a check-condition in scsi_dh_alua handler for a retry. Sometimes, I have seen attach failing due to this check-condition with following error messages on NetApp E series storage. Dec 7 15:31:01 nilgiris kernel: [102979.696673] scsi 3:0:2:9: alua: port group 00 rel port 01 Dec 7 15:31:01 nilgiris kernel: [102979.697082] scsi 3:0:2:9: alua: rtpg failed with 8000002 Dec 7 15:31:01 nilgiris kernel: [102979.697086] scsi 3:0:2:9: alua: rtpg sense code 06/2a/01 Dec 7 15:31:01 nilgiris kernel: [102979.697088] scsi 3:0:2:9: alua: not attached Signed-off-by: Babu Moger Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: Fix error path

2012-01-10T23:01:18Z

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: code cleanup and remove the references to scsi_dev_info

2011-12-15T06:55:00Z

All the handlers have now implemented the match function so We don't need to use scsi_dev_info any more for matching purposes. Signed-off-by: Babu Moger Acked-by: Hannes Reinecke Signed-off-by: James Bottomley

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

2011-12-15T06:55:00Z

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] scsi_dh_hp_sw: Adding the match function for hp_sw device handler

2011-12-15T06:55:00Z

This patch introduces the match function for hp_sw device handler. Included the check for TPGS bit before proceeding further per Hannes comment. The match function was introduced by commit 6c3633d08acf514e2e89aa95d2346ce9d64d719a Signed-off-by: Babu Moger Acked-by: Hannes Reinecke Signed-off-by: James Bottomley

[SCSI] scsi_dh_emc: Add a match function for emc device handler

2011-12-15T06:55:00Z

This patch introduces the match function for emc device handler. 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

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-07T03:44:47Z

* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits) Revert "tracing: Include module.h in define_trace.h" irq: don't put module.h into irq.h for tracking irqgen modules. bluetooth: macroize two small inlines to avoid module.h ip_vs.h: fix implicit use of module_get/module_put from module.h nf_conntrack.h: fix up fallout from implicit moduleparam.h presence include: replace linux/module.h with "struct module" wherever possible include: convert various register fcns to macros to avoid include chaining crypto.h: remove unused crypto_tfm_alg_modname() inline uwb.h: fix implicit use of asm/page.h for PAGE_SIZE pm_runtime.h: explicitly requires notifier.h linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h miscdevice.h: fix up implicit use of lists and types stop_machine.h: fix implicit use of smp.h for smp_processor_id of: fix implicit use of errno.h in include/linux/of.h of_platform.h: delete needless include acpi: remove module.h include from platform/aclinux.h miscdevice.h: delete unnecessary inclusion of module.h device_cgroup.h: delete needless include net: sch_generic remove redundant use of net: inet_timewait_sock doesnt need ... Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in - drivers/media/dvb/frontends/dibx000_common.c - drivers/media/video/{mt9m111.c,ov6650.c} - drivers/mfd/ab3550-core.c - include/linux/dmaengine.h

[SCSI] scsi_dh_alua: Fix the time inteval for alua rtpg commands

2011-11-03T07:18:10Z

This patch corrects the retry interval for alua rtpg command. Purpose was to retry the commands in seconds. But that was not happening. Reason is msleep takes argument in milliseconds. Also added minor text after successful attach. Signed-off-by: Babu Moger Acked-by: Hannes Reinecke Signed-off-by: James Bottomley