Commit graph

6015 commits

Author SHA1 Message Date
Krishna Gudipati 5b098082e2 [SCSI] bfa: Changes to support FDMI Driver Parameter
Added a FCS function to be called during driver init, to set the FDMI
 Driver parameter.

fdmi.c: Created a disabled state when fdmi is disabled.

bfad.c:
  * Added fdmi_enable driver parameter.
  * Added support to call bfa_fcs_set_fdmi_param() to initialize fcs
    fdmi setting.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-04 16:13:40 +05:30
Krishna Gudipati ab5336189a [SCSI] bfa: Enable new halt interrupt in BFA.
bfa_intr.c:  Enable new halt interrupt in BFA.
bfi_ctreg.h: Expose new halt interrupt bit definition to host.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-04 16:12:58 +05:30
Krishna Gudipati 2f9b8857a9 [SCSI] bfa: Enable IOC auto-recovery and IOC type fix.
bfa_ioc.c:
  - Enable IOC auto-recovery by default.
  - When CNA is in FC mode, return IOC type as FC (not FCoE)

bfa_iocfc.c:
  - Set fcmode before pci initialization/setup.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-04 16:10:02 +05:30
Krishna Gudipati 5c1fb1d556 [SCSI] bfa: Defined a new LPS event to clear virtual link on a vport
Clear virtual links was not propagated upwards to bfa from fw.
This resulted in HBA and switch being in an inconsistent state.

So defined a new LPS event for clear virtual link on a vport,
and also now clear virtual link on a baseport, is sent as a
link down event from the fw.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-04 16:09:37 +05:30
Krishna Gudipati 4c147dd819 [SCSI] bfa: Added separate MSI-X module parameters.
Added separate MSI-X module parameters to selectively
enable / disable MSI-X interrupts for both Brocade HBA and CNA's.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-04 15:29:46 +05:30
James Bottomley fac829fdca [SCSI] raid_attrs: fix dependency problems
RAID attributes uses scsi_is_sdev_device() to gate some SCSI specific
checking code.  This causes two problems.  Firstly if SCSI == n just
defining scsi_is_sdev_device() to return false might not be enough to
prevent gcc from emitting the code (and thus referring to undefined
symbols), so this needs surrounding with an ifdef.  Secondly, using
scsi_is_sdev_device() when SCSI is either y or m gives a subtle
problem in the m case: raid_attrs must also be m to use the symbol.
Do the usual Kconfig jiggery-pokery to fix this.

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 21:17:06 +05:30
Boaz Harrosh 98e1e0f07c [SCSI] libosd: Fix unchecked err return found by smatch
Doing CHECK="smatch --two-passes gives:
drivers/scsi/osd/osd_initiator.c +1435 osd_finalize_request warning: assignment to 'ret' was never used

Which is an unchecked possible allocation failure, Fixed.

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 21:12:21 +05:30
Martin K. Petersen bb2d3de188 [SCSI] sd: Fix VPD buffer allocations
Commit e3deec09 incorrectly assumed that the B0 and B1 page lengths were
limited to 32 bytes.  The B0 VPD page length is defined to be 64 bytes
when the device supports thin provisioning.  B1 is always defined to be
64 bytes.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 19:13:16 +05:30
James Smart 74315ad00b [SCSI] lpfc 8.3.10: Update Driver version to 8.3.10
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 19:10:26 +05:30
James Smart 0c9ab6f5cb [SCSI] lpfc 8.3.10: Added round robin FCF failover
- Added round robin FCF failover on initial or FCF rediscovery FLOGI failure.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 19:10:09 +05:30
James Smart fc2b989be9 [SCSI] lpfc 8.3.10: Fix Discovery issues
- Prevent Vport discovery after reg_new_vport completes when physical
  logged in using FDISC.
- Remove fast FCF failover fabric name matching. Allow failover to FCFs
  connected to different fabrics.
- Added fast FCF failover in response to FCF DEAD event on current
  FCF record.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 19:09:52 +05:30
James Smart e2aed29f29 [SCSI] lpfc 8.3.10: Added management for LP21000 through BSG.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 19:09:36 +05:30
James Smart 0f65ff680f [SCSI] lpfc 8.3.10: Update SLI interface areas
- Clear LPFC_DRIVER_ABORTED on FCP command completion.
- Clear exchange busy flag when I/O is aborted and found on aborted list.
- Free sglq when XRI_ABORTED event is processed before release of IOCB.
- Only process iocb as aborted when LPFC_DRIVER_ABORTED is set.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 19:09:18 +05:30
James Smart e40a02c125 [SCSI] lpfc 8.3.10: Fix user interface issues
- Add Logging message for critial errors.
- Remove unused variable from lpfc_nodev_tmo_show
- Update supress_link_up parameter with #define values.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 19:08:58 +05:30
James Smart 9f1177a3f8 [SCSI] lpfc 8.3.10: Fix Initialization issues
- Add NULL checks to the pointers for the config_async mailbox
  and dump_wakeup_params mailbox.
- Add code to check return value of lpfc_read_sparams everywhere
  and handle failures appropriately.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 19:08:34 +05:30
Stephen M. Cameron 43aebfa12e [SCSI] hpsa: remove unused members next, prev, and retry_count from command list structure.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:37:37 +05:30
Stephen M. Cameron 33a2ffce51 [SCSI] hpsa: Increase the number of scatter gather elements supported.
This uses the scatter-gather chaining feature of Smart Array
controllers.  32 scatter-gather elements are embedded in the
"command list", and the last element in the list may be marked
as a "chain pointer", and point to an additional block of
scatter gather elements.  The precise number of scatter gather
elements supported is dependent on the particular kind of
Smart Array, and is determined at runtime by querying the
hardware.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:37:22 +05:30
Stephen M. Cameron db61bfcfe2 [SCSI] hpsa: Clarify calculation of padding for commandlist structure
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:37:08 +05:30
Stephen M. Cameron ff9fea9454 [SCSI] hpsa: mark hpsa_pci_init as __devinit
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:36:58 +05:30
Mike Miller 31468401cc [SCSI] hpsa: remove scan thread
The intent of the scan thread was to allow a UNIT ATTENTION/LUN
DATA CHANGED condition encountered in the interrupt handler
to trigger a rescan of devices, which can't be done in interrupt
context.  However, we weren't able to get this to work, due to
multiple such UNIT ATTENTION conditions arriving during the rescan,
during updating of the SCSI mid layer, etc.  There's no way to tell
the devices, "stand still while I scan you!"  Since it doesn't work,
there's no point in having the thread, as the rescan triggered via
ioctl or sysfs can be done without such a thread.

Signed-off-by: Mike Miller <mikem@beardog.cce.hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:36:48 +05:30
Stephen M. Cameron e9ea04a65a [SCSI] hpsa: return -ENOMEM, not -1
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:36:18 +05:30
Stephen M. Cameron 5512672f75 [SCSI] hpsa: fix scsi status mis-shift
The SCSI status does not need to be shifted.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:36:04 +05:30
Stephen M. Cameron f0edafc662 [SCSI] hpsa: fix firmwart typo
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:35:50 +05:30
Stephen M. Cameron 667e23d4e9 [SCSI] hpsa: allow modifying device queue depth.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:35:40 +05:30
Brian King b0f4d4cf12 [SCSI] ibmvfc: Add suspend/resume support
Adds support for resuming from suspend for IBM VFC devices. We may have
lost an interrupt over the suspend, so we just kick the interrupt handler
to process anything that is outstanding. We expect to find a transport event
indicating we need to reestablish our CRQ.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:32:42 +05:30
Brian King 64355b929d [SCSI] ibmvscsi: Add suspend/resume support
Adds support for resuming from suspend for IBM VSCSI devices. We may have
lost an interrupt over the suspend, so we just kick the interrupt handler
to process anything that is outstanding. We expect to find a transport event
indicating we need to reestablish our CRQ.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:32:41 +05:30
Jayamohan Kallickal c03af1ae1c [SCSI] be2iscsi: Alloc only one EQ if intr mode
This patch ensures that we alloc only one EQ
if we are if we are not in msix mode

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:31:21 +05:30
Jayamohan Kallickal ed58ea2ab5 [SCSI] be2iscsi: Fixing memory allocation for connection
This patch fixes some situations where enough resources were not
avaialable  when targets exceeded a certain limit

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:30:06 +05:30
Jayamohan Kallickal 90a289e876 [SCSI] be2iscsi: Remove debug code
This patch removes some debug lines which are unnecessary and
also aligns some lines in code

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:29:54 +05:30
Jayamohan Kallickal dafab8e079 [SCSI] be2iscsi: cleans up abort handling
This patch cleans up abort handling when TMF is sent

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:29:44 +05:30
Jayamohan Kallickal 944b2fbce2 [SCSI] be2iscsi: Fix for a possible udelay while holding lock
This patch fixes a situation where we could call udelay
while holding spin_lock

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 17:40:04 +05:30
Jayamohan Kallickal 4183122dbc [SCSI] be2iscsi: Cleanup of resets for device and target
This patch cleans up device and target reset handling
for the driver

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 17:39:24 +05:30
Jayamohan Kallickal 309ce156aa [SCSI] libiscsi: Make iscsi_eh_target_reset start with session reset
The iscsi_eh_target_reset has been modified to attempt
target reset only. If it fails, then iscsi_eh_session_reset
will be called.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 17:39:04 +05:30
Wayne Boyer d7b4627f5f [SCSI] ipr: adds PCI ID definitions for new adapters
This patch adds the PCI ID definitions for new adapters based on the next
generation 64 bit IOA PCI interface chip.  New entries have been added to the
ipr_pci_table[] array for the adapters and to the ipr_chip[] array for the new
versions of the chip.

Older entries have been removed for cards that did not ship.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:05:05 +05:30
Wayne Boyer 5aa3a333ea [SCSI] ipr: add support for new IOASCs
This patch adds support for new errors that can be received from adapters
using the next generation 64 bit IOA PCI interface chip.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:05:04 +05:30
Wayne Boyer 214777ba12 [SCSI] ipr: add support for multiple stages of initialization
This patch adds support for using the new IOA initialization feedback register.
It also enables 64 bit support in the ipr_ioafp_identify_hrrq and
ipr_mask_and_clear_interrupts routines.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:05:03 +05:30
Wayne Boyer f72919ec2b [SCSI] ipr: implement shutdown changes and remove obsolete write cache parameter
This patch adds a reboot notifier that will issue a shutdown prepare command
to all adapters.  This helps to prevent a problem where the primary adapter can
get shut down before the secondary adapter and cause the secondary adapter to
fail over and log and error.
This patch also removes the "enable_cache" paramater as it is obsolete.  Write
cache for an adapter is now controlled from the iprconfig utility.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:05:02 +05:30
Wayne Boyer dcbad00e6b [SCSI] ipr: add hardware assisted smart dump functionality
This patch adds the hardware assisted smart dump functionality for the next
generation IOA PCI interface chip.

Signea-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:05:00 +05:30
Wayne Boyer 4565e37063 [SCSI] ipr: add error handling updates for the next generation chip
Add support for the new log data notification and overlay IDs.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:04:59 +05:30
Wayne Boyer 3e7ebdfa58 [SCSI] ipr: update the configuration table code for the next generation chip
This patch changes the configuration table structures and related code such
that both 32 bit and 64 bit based adapters can work with the driver.

This patch also implements the code to generate the virtual bus/id/lun values
for devices connected to the new adapters.  It also implements support for the
new device resource path.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:04:57 +05:30
Wayne Boyer a74c16390a [SCSI] ipr: define new offsets to registers for the next generation chip
This patch adds the entry to the ipr_chip_cfg array that defines the register
offsets for the next generation 64 bit IOA PCI interface chip.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:04:55 +05:30
Wayne Boyer a32c055fee [SCSI] ipr: add support for new adapter command structures for the next generation chip
Change the adapter command structures such that both 32 bit and 64 bit based
adapters can work with the driver.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:01:33 +05:30
Hannes Reinecke 6c71dcb28f [SCSI] scsi_dh_emc: fix mode select request setup
This patch fixes the request setup code for mode selects. I got the fixes from
Hannes Reinecke while trying to hunt down some problems and merged it
into one patch. I am sending it because Hannes is busy with other things.

The patch fixes:
- setting of the length for mode selects.
- setting of the data direction for mode select 10.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 16:00:11 +05:30
Linus Torvalds b1bf936840 Merge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block: (38 commits)
  block: don't access jiffies when initialising io_context
  cfq: remove 8 bytes of padding from cfq_rb_root on 64 bit builds
  block: fix for "Consolidate phys_segment and hw_segment limits"
  cfq-iosched: quantum check tweak
  blktrace: perform cleanup after setup error
  blkdev: fix merge_bvec_fn return value checks
  cfq-iosched: requests "in flight" vs "in driver" clarification
  cciss: Fix problem with scatter gather elements in the scsi half of the driver
  cciss: eliminate unnecessary pointer use in cciss scsi code
  cciss: do not use void pointer for scsi hba data
  cciss: factor out scatter gather chain block mapping code
  cciss: fix scatter gather chain block dma direction kludge
  cciss: simplify scatter gather code
  cciss: factor out scatter gather chain block allocation and freeing
  cciss: detect bad alignment of scsi commands at build time
  cciss: clarify command list padding calculation
  cfq-iosched: rethink seeky detection for SSDs
  cfq-iosched: rework seeky detection
  block: remove padding from io_context on 64bit builds
  block: Consolidate phys_segment and hw_segment limits
  ...
2010-03-01 09:00:29 -08:00
Randy Dunlap 786f8ba2e9 scsi.c: add missing kernel-doc notation for new VPD parameters
Add missing kernel-doc notation for new function parameters:

Warning(drivers/scsi/scsi.c:1031): No description found for parameter 'buf'
Warning(drivers/scsi/scsi.c:1031): No description found for parameter 'buf_len'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-01 08:11:54 -08:00
Finn Thain cff75f1fb1 mac68k: move mac_esp platform device
Move platform device code from the driver to the platform init function.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-02-27 18:31:10 +01:00
Linus Torvalds 06a79b82b2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM / Hibernate: Fix preallocating of memory
  PM / Hibernate: Remove swsusp.c finally
  PM / Hibernate: Remove trailing space in message
  PM: Allow SCSI devices to suspend/resume asynchronously
  PM: Allow USB devices to suspend/resume asynchronously
  USB: implement non-tree resume ordering constraints for PCI host controllers
  PM: Allow PCI devices to suspend/resume asynchronously
  PM / Hibernate: Swap, remove useless check from swsusp_read()
  PM / Hibernate: Really deprecate deprecated user ioctls
  PM: Allow device drivers to use dpm_wait()
  PM: Start asynchronous resume threads upfront
  PM: Add facility for advanced testing of async suspend/resume
  PM: Add a switch for disabling/enabling asynchronous suspend/resume
  PM: Asynchronous suspend and resume of devices
  PM: Add parent information to timing messages
  PM: Document device power attributes in sysfs
  PM / Runtime: Add sysfs switch for disabling device run-time PM
2010-02-26 17:22:53 -08:00
Linus Torvalds 654451748b Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (158 commits)
  [SCSI] Fix printing of failed 32-byte commands
  [SCSI] Fix printing of variable length commands
  [SCSI] libsrp: fix bug in ADDITIONAL CDB LENGTH interpretation
  [SCSI] scsi_dh_alua: Add IBM Power Virtual SCSI ALUA device to dev list
  [SCSI] scsi_dh_alua: add netapp to dev list
  [SCSI] qla2xxx: Update version number to 8.03.02-k1.
  [SCSI] qla2xxx: EEH: Restore PCI saved state during pci slot reset.
  [SCSI] qla2xxx: Add firmware ETS burst support.
  [SCSI] qla2xxx: Correct loop-resync issues during SNS scans.
  [SCSI] qla2xxx: Correct use-after-free issue in terminate_rport_io callback.
  [SCSI] qla2xxx: Correct EH bus-reset handling.
  [SCSI] qla2xxx: Proper clean-up of BSG requests when request times out.
  [SCSI] qla2xxx: Initialize payload receive length in failure path of vendor commands
  [SCSI] fix duplicate removal on error path in scsi_sysfs_add_sdev
  [SCSI] fix refcounting bug in scsi_get_host_dev
  [SCSI] fix memory leak in scsi_report_lun_scan
  [SCSI] lpfc: correct PPC build failure
  [SCSI] raid_class: add raid1e
  [SCSI] mpt2sas: Do not call sas_is_tlr_enabled for RAID volumes.
  [SCSI] zfcp: Introduce header file for qdio structs and inline functions
  ...
2010-02-26 16:55:27 -08:00
Rafael J. Wysocki 4cb077d93a PM: Allow SCSI devices to suspend/resume asynchronously
Set power.async_suspend for all SCSI devices, targets and hosts, so
that they can be suspended and resumed in parallel with the main
suspend/resume thread and possibly with other devices they don't
depend on in a known way (i.e. devices which are not their parents or
children).

The power.async_suspend flag is also set for devices that don't have
suspend or resume callbacks, because otherwise they would make the
main suspend/resume thread wait for their "asynchronous" children
(during suspend) or parents (during resume), effectively negating the
possible gains from executing these devices' suspend and resume
callbacks asynchronously.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-02-26 20:39:12 +01:00
Martin K. Petersen 8a78362c4e block: Consolidate phys_segment and hw_segment limits
Except for SCSI no device drivers distinguish between physical and
hardware segment limits.  Consolidate the two into a single segment
limit.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-02-26 13:58:08 +01:00