linux/drivers/scsi/device_handler, branch v3.2.41

scsi_dh_alua: Enable STPG for unavailable ports

2012-10-17T02:48:51Z

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: Ben Hutchings

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

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

2011-10-31T23:31:24Z

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: check queuedata pointer before proceeding further

2011-10-31T09:10:36Z

This patch validates sdev pointer in scsi_dh_activate before proceeding further. Without this check we might see the panic as below. I have seen this panic multiple times.. Call trace: #0 [ffff88007d647b50] machine_kexec at ffffffff81020902 #1 [ffff88007d647ba0] crash_kexec at ffffffff810875b0 #2 [ffff88007d647c70] oops_end at ffffffff8139c650 #3 [ffff88007d647c90] __bad_area_nosemaphore at ffffffff8102dd15 #4 [ffff88007d647d50] page_fault at ffffffff8139b8cf [exception RIP: scsi_dh_activate+0x82] RIP: ffffffffa0041922 RSP: ffff88007d647e00 RFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000000093c5 RDX: 00000000000093c5 RSI: ffffffffa02e6640 RDI: ffff88007cc88988 RBP: 000000000000000f R8: ffff88007d646000 R9: 0000000000000000 R10: ffff880082293790 R11: 00000000ffffffff R12: ffff88007cc88988 R13: 0000000000000000 R14: 0000000000000286 R15: ffff880037b845e0 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0000 #5 [ffff88007d647e38] run_workqueue at ffffffff81060268 #6 [ffff88007d647e78] worker_thread at ffffffff81060386 #7 [ffff88007d647ee8] kthread at ffffffff81064436 #8 [ffff88007d647f48] kernel_thread at ffffffff81003fba Signed-off-by: Babu Moger Cc: stable@kernel.org Signed-off-by: James Bottomley

[SCSI] scsi_dh_alua: Add one more check-condition for alua handler

2011-10-16T15:57:27Z

This patch adds one more check-condition for scsi_dh_alua handler. Without this, the handler attach fails sometimes during the discovery. I have noticed this with NetApp E-Series storage with alua mode. Also removed some unnecessary brackets {} for consistency. Signed-off-by: Babu Moger Signed-off-by: James Bottomley

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

2011-09-22T11:26:43Z

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

2011-09-22T11:02:57Z

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] scsi_dh_alua: Decrease retry interval

2011-08-30T19:33:06Z

The alua device handler starts the first retry after 10 seconds, and increases it times 10 for each round. This leads to an unnecessary delay. This patch modifies it to start after one second, and increase by a factor of two. Signed-off-by: Hannes Reinecke Signed-off-by: James Bottomley

[SCSI] scsi_dh_alua: Fix Erroneous TPG ID check

2011-08-30T19:32:41Z

For Target Portal Group IDs occupying the full 2 bytes in the RTPG response, the following group_id check in the alua_rtpg routine always fails in scsi_dh_alua.c: if (h->group_id == (ucp[2] << 8) + ucp[3]) { This causes the ALUA handler to wrongly identify the AAS of a specified device as well as incorrectly interpreting the supported AAS of the target as seen by the following entries in the /var/log/messages: "alua: port group 3ea state A supports tousna" "alua: port group 3e9 state A supports tousna" This is because 'ucp' is wrongly declared in alua_rtpg as a character pointer instead of an unsigned character pointer. Signed-off-by: Martin George Signed-off-by: Hannes Reinecke Signed-off-by: James Bottomley