linux-toradex.git/drivers/scsi/device_handler, branch v3.0.25

scsi_dh: check queuedata pointer before proceeding further

2011-11-11T17:37:02+00:00

commit a18a920c70d48a8e4a2b750d8a183b3c1a4be514 upstream.

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 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

2011-05-20T20:29:52+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (110 commits)
  [SCSI] qla2xxx: Refactor call to qla2xxx_read_sfp for thermal temperature.
  [SCSI] qla2xxx: Unify the read/write sfp mailbox command routines.
  [SCSI] qla2xxx: Clear complete initialization control block.
  [SCSI] qla2xxx: Allow an override of the registered maximum LUN.
  [SCSI] qla2xxx: Add host number in reset and quiescent message logs.
  [SCSI] qla2xxx: Correctly read sfp single byte mailbox register.
  [SCSI] qla2xxx: Add qla82xx_rom_unlock() function.
  [SCSI] qla2xxx: Log if qla82xx firmware fails to load from flash.
  [SCSI] qla2xxx: Use passed in host to initialize local scsi_qla_host in queuecommand function
  [SCSI] qla2xxx: Correct buffer start in edc sysfs debug print.
  [SCSI] qla2xxx: Update firmware version after flash update for ISP82xx.
  [SCSI] qla2xxx: Fix hang during driver unload when vport is active.
  [SCSI] qla2xxx: Properly set the dsd_list_len for dsd_chaining in cmd type 6.
  [SCSI] qla2xxx: Fix virtual port failing to login after chip reset.
  [SCSI] qla2xxx: Fix vport delete hang when logins are outstanding.
  [SCSI] hpsa: Change memset using sizeof(ptr) to sizeof(*ptr)
  [SCSI] ipr: Rate limit DMA mapping errors
  [SCSI] hpsa: add P2000 to list of shared SAS devices
  [SCSI] hpsa: do not attempt PCI power management reset method if we know it won't work.
  [SCSI] hpsa: remove superfluous sleeps around reset code
  ...

[SCSI] scsi_dh_alua: Attach to UNAVAILABLE/OFFLINE AAS devices

2011-05-01T17:05:40+00:00

The SCSI ALUA handler currently fails to attach to devices
reporting an UNAVAILABLE/OFFLINE AAS. But given that an
UNAVAILABLE/OFFLINE AAS can transition to other states
like ACTIVE/OPTIMIZED, ACTIVE/NON-OPTIMIZED, etc. as per
SPC4, this ALUA handler behavior should be rectified so
as to attach to devices which also report an
UNAVAILABLE/OFFLINE AAS.

Signed-off-by: Martin George 
Reviewed-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac : decide whether to send mode select based on operating mode

2011-05-01T15:47:41+00:00

Based on the operating modes, handler decides whether to send mode
select or not. Purpose here is to reduce io-shipping as much as
possible whenever there is an option.

Signed-off-by: Babu Moger 
Reviewed-by: Yanling Qi 
Reviewed-by: Sudhir Dachepalli 
Reviewed-by: Somasundaram Krishnasamy 
Reviewed-by: Bob Stankey 
Reviewed-by: Vijay Chauhan 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac : Detect the different RDAC operating modes

2011-05-01T15:46:57+00:00

This patch detects different operating RDAC modes during the
discovery. It also collects the information about the preferred path.

Signed-off-by: Babu Moger 
Reviewed-by: Yanling Qi 
Reviewed-by: Sudhir Dachepalli 
Reviewed-by: Somasundaram Krishnasamy 
Reviewed-by: Bob Stankey 
Reviewed-by: Vijay Chauhan 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac : Add definitions for different RDAC operating modes

2011-05-01T15:45:22+00:00

This patch adds definitions to support for different operating modes
for LSI rdac storage.  Currently, rdac support 3 operation modes.

1. RDAC mode(legacy)
2. AVT mode
3. IOSHIP mode

These definitions are used while activating the path(rdac_activate).

Signed-off-by: Babu Moger 
Reviewed-by: Yanling Qi 
Reviewed-by: Sudhir Dachepalli 
Reviewed-by: Somasundaram Krishnasamy 
Reviewed-by: Bob Stankey 
Reviewed-by: Vijay Chauhan 
Signed-off-by: James Bottomley

[SCSI] scsi_dh: fix reference counting in scsi_dh_activate error path

2011-04-24T16:02:09+00:00

Commit db422318cbca55168cf965f655471dbf8be82433 ([SCSI] scsi_dh:
propagate SCSI device deletion) introduced a regression where the device
reference is not dropped prior to scsi_dh_activate's early return from
the error path.

Signed-off-by: Mike Snitzer 
Cc: stable@kernel.org # 2.6.38
Reviewed-by: Mike Christie 
Signed-off-by: James Bottomley

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

[SCSI] scsi_dh_rdac: Add MD36xxf into device list

2011-03-15T00:05:07+00:00

This patch is to add Dell MD36xxf array into the RDAC handler device list.

Singed-off-by: Yanqing Liu 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac : Adding MODULE VERSION for rdac device handler

2011-02-12T20:14:11+00:00

Adding MODULE_VERSION for scsi_dh_rdac. This will be helpful sometimes
to get the code level without looking at the code.

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