Alan Cox [Thu, 12 Jul 2012 15:40:15 +0000 (16:40 +0100)]
[SCSI] aha152x: Allow use on 64bit systems
This is reported to work, known to work on PCMCIA and a code check shows no
problems on the other bits of the code.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Nicholas Bellinger [Wed, 11 Jul 2012 21:22:16 +0000 (21:22 +0000)]
[SCSI] virtio-scsi: Add vdrv->scan for post VIRTIO_CONFIG_S_DRIVER_OK LUN scanning
This patch changes virtio-scsi to use a new virtio_driver->scan() callback
so that scsi_scan_host() can be properly invoked once virtio_dev_probe() has
set add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK) to signal active virtio-ring
operation, instead of from within virtscsi_probe().
This fixes a bug where SCSI LUN scanning for both virtio-scsi-raw and
virtio-scsi/tcm_vhost setups was happening before VIRTIO_CONFIG_S_DRIVER_OK
had been set, causing VIRTIO_SCSI_S_BAD_TARGET to occur. This fixes a bug
with virtio-scsi/tcm_vhost where LUN scan was not detecting LUNs.
Tested with virtio-scsi-raw + virtio-scsi/tcm_vhost w/ IBLOCK on 3.5-rc2 code.
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Kyle McMartin [Wed, 11 Jul 2012 16:42:55 +0000 (12:42 -0400)]
[SCSI] bfa: squelch lockdep complaint with a spin_lock_init
Spotted this while looking at another issue...
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Pid: 298, comm: udevd Not tainted 3.3.0 #1
Call Trace:
[<
ffffffff810cee63>] __lock_acquire+0x1363/0x1bb0
[<
ffffffff816593d2>] ? __slab_alloc+0x4a0/0x4fd
[<
ffffffff81020063>] ? native_sched_clock+0x13/0x80
[<
ffffffff810200d9>] ? sched_clock+0x9/0x10
[<
ffffffff810cfd81>] lock_acquire+0xa1/0x1e0
[<
ffffffffa0321b83>] ? bfa_fcs_lport_aen_post+0x43/0x160 [bfa]
[<
ffffffff816630e5>] _raw_spin_lock_irqsave+0x65/0xb0
[<
ffffffffa0321b83>] ? bfa_fcs_lport_aen_post+0x43/0x160 [bfa]
[<
ffffffffa0321b83>] bfa_fcs_lport_aen_post+0x43/0x160 [bfa]
[<
ffffffffa032fa57>] bfa_fcs_lport_init+0x97/0x120 [bfa]
[<
ffffffffa031d4ff>] bfa_fcs_fabric_sm_uninit+0x1cf/0x250 [bfa]
[<
ffffffffa031c1da>] bfa_fcs_fabric_modinit+0x2a/0xb0 [bfa]
[<
ffffffffa031bef2>] ? bfa_fcs_fabric_attach+0xf2/0x170 [bfa]
[<
ffffffffa031e75a>] bfa_fcs_init+0x2a/0x40 [bfa]
[<
ffffffffa02facf7>] bfad_drv_init+0x107/0x1f0 [bfa]
[<
ffffffffa02fb057>] bfad_pci_probe+0x277/0x450 [bfa]
[<
ffffffff81354d4c>] local_pci_probe+0x5c/0xd0
[<
ffffffff81354ed1>] pci_device_probe+0x111/0x120
[<
ffffffff8141c0e6>] driver_probe_device+0x96/0x2f0
[<
ffffffff8141c3eb>] __driver_attach+0xab/0xb0
[<
ffffffff8141c340>] ? driver_probe_device+0x2f0/0x2f0
[<
ffffffff8141a2e5>] bus_for_each_dev+0x55/0x90
[<
ffffffffa037b000>] ? 0xffffffffa037afff
[<
ffffffff8141bbce>] driver_attach+0x1e/0x20
[<
ffffffff8141b8d8>] bus_add_driver+0x1b8/0x2b0
[<
ffffffffa037b000>] ? 0xffffffffa037afff
[<
ffffffff8141cbc7>] driver_register+0x77/0x160
[<
ffffffffa037b000>] ? 0xffffffffa037afff
[<
ffffffff81353b23>] __pci_register_driver+0x73/0xf0
[<
ffffffffa037b000>] ? 0xffffffffa037afff
[<
ffffffffa037b083>] bfad_init+0x83/0x1000 [bfa]
[<
ffffffff8100212a>] do_one_initcall+0x12a/0x180
[<
ffffffff810df0d0>] sys_init_module+0xc0/0x220
[<
ffffffff8166bbe9>] system_call_fastpath+0x16/0x1b
Signed-off-by: Kyle McMartin <kmcmarti@redhat.com>
Acked-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Jon Mason [Tue, 10 Jul 2012 21:57:56 +0000 (14:57 -0700)]
[SCSI] qla2xxx: remove unnecessary reads of PCI_CAP_ID_EXP
The PCIE capability offset is saved during PCI bus walking. It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it. Also, pci_is_pcie is a
better way of determining if the device is PCIE or not (as it uses the
same saved PCIE capability offset).
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Acked-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Jon Mason [Tue, 10 Jul 2012 21:57:55 +0000 (14:57 -0700)]
[SCSI] qla4xxx: remove unnecessary read of PCI_CAP_ID_EXP
The PCIE capability offset is saved during PCI bus walking. It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Acked-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Namjae Jeon [Tue, 10 Jul 2012 15:11:54 +0000 (20:41 +0530)]
[SCSI] ufs: fix incorrect return value about SUCCESS and FAILED
Currently the UFS host driver has returned incorrect values for SUCCESS
and FAILED. Fix it to return the correct value to the upper layer.
Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Venkatraman S [Tue, 10 Jul 2012 14:09:23 +0000 (19:39 +0530)]
[SCSI] ufs: reverse the ufshcd_is_device_present logic
Otherwise it counter intuitively returns 0 if device is present.
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Venkatraman S [Tue, 10 Jul 2012 14:09:22 +0000 (19:39 +0530)]
[SCSI] ufs: use module_pci_driver
Use macro module_pci_driver and get rid of boilerplate code. No
functional changes.
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Namjae Jeon [Sun, 8 Jul 2012 03:05:49 +0000 (23:05 -0400)]
[SCSI] usb-storage: update usb devices for write cache quirk in quirk list.
Update information of Seagate Portable HDD and WD My Passport HDD in
quirk list.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Namjae Jeon [Sun, 8 Jul 2012 03:05:28 +0000 (23:05 -0400)]
[SCSI] usb-storage: add support for write cache quirk
Add support for write cache quirk on usb hdd. scsi driver will be set to wce
by detecting write cache quirk in quirk list when plugging usb hdd.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Namjae Jeon [Sun, 8 Jul 2012 03:05:08 +0000 (23:05 -0400)]
[SCSI] set to WCE if usb cache quirk is present.
Make use of USB quirk method to identify such HDD while reading
the cache status in sd_probe(). If cache quirk is present for
the HDD, lets assume that cache is enabled and make WCE bit
equal to 1.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Cong Meng [Thu, 5 Jul 2012 09:06:43 +0000 (17:06 +0800)]
[SCSI] virtio-scsi: hotplug support for virtio-scsi
This patch implements the hotplug support for virtio-scsi.
When there is a device attached/detached, the virtio-scsi driver will be
signaled via event virtual queue and it will add/remove the scsi device
in question automatically.
Signed-off-by: Sen Wang <senwang@linux.vnet.ibm.com>
Signed-off-by: Cong Meng <mc@linux.vnet.ibm.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Paolo Bonzini [Wed, 13 Jun 2012 14:56:34 +0000 (16:56 +0200)]
[SCSI] virtio-scsi: split scatterlist per target
To improve performance for I/O to different targets, add a separate
scatterlist for each of them.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Paolo Bonzini [Wed, 13 Jun 2012 14:56:33 +0000 (16:56 +0200)]
[SCSI] virtio-scsi: release sg_lock after add_buf
We do not need the sglist after calling virtqueue_add_buf. Hence we
can "pipeline" the locked operations and start preparing the sglist
for the next request while we kick the virtqueue.
Together with the previous two patches, this improves performance as
follows. For a simple "if=/dev/sda of=/dev/null bs=128M iflag=direct"
(the source being a 10G disk, residing entirely in the host buffer cache),
the additional locking does not cause any penalty with only one dd
process, but 2 simultaneous I/O operations improve their times by 3%:
number of simultaneous dd
1 2
----------------------------------------
current 5.9958s 10.2640s
patched 5.9531s 9.8663s
(Times are best of 10).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Paolo Bonzini [Wed, 13 Jun 2012 14:56:32 +0000 (16:56 +0200)]
[SCSI] virtio-scsi: split locking per vq
Keep a separate lock for each virtqueue. While not particularly
important now, it prepares the code for when we will add support
for multiple request queues. It is also more tidy as soon as
we introduce a separate lock for the sglist.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Paolo Bonzini [Wed, 13 Jun 2012 14:56:31 +0000 (16:56 +0200)]
[SCSI] virtio-scsi: unlock during kick
Separate virtqueue_kick_prepare from virtqueue_notify, so that the
expensive vmexit is done without holding the lock.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Yi Zou [Fri, 6 Jul 2012 17:40:31 +0000 (10:40 -0700)]
[SCSI] libfc: fix sending REC after FCP_RESP is received
This is exposed in the case the FCP_DATA frames somehow got lost and fc_fcp got
the FCP_RSP, in fc_fcp_recv_resp(), since xfer_len is less than the expected_len
it resets the the timer to wait to 2 more jiffies in case the data frames are
already queued locally. However, for target does not support REC, it would just
send RJT w/ ELS_RJT_UNSUP. The rec response handler thus only clears the rport
flag for not doing REC later, but does not do fcp_io_complete() on the
associated fsp.
The fix is just check status of FCP_RSP being received already, i.e. using the
FC_SRB_RCV_STATUS flag, in fc_fcp_timeout before start sending REC. We should
have waited long enough if there is truely data frames queued locally.
Signed-off-by: Yi Zou <yi.zou@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vasu Dev [Fri, 6 Jul 2012 17:40:15 +0000 (10:40 -0700)]
[SCSI] libfc: fix retries with FDMI lport states
The FC-GS-3 sepc requires to wait for least 3 times R_A_TOV per
sec 4.6.1 "If the Requesting_CT does not receive a Response
CT_IU from the Responding_CT within three times R_A_TOV,
it shall consider this to be a protocol error."
This means added four new states with management server
could add significant delay with multiple retries
on default 12 second timeout(3 * R_A_TOV), so instead
just skip these states on very first timeout on any of
these states to not stuck with states for such longer
period.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Tested-by: Marcus Dennis <marcusx.e.dennis@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Yi Zou [Fri, 6 Jul 2012 17:40:26 +0000 (10:40 -0700)]
[SCSI] libfc: don't exch_done() on invalid sequence ptr
The lport_recv(), i.e., fc_lport_recv_req() may get called w/o the sequence ptr
being set in fr_seq(), particularly in the case of vn2vn mode, this may happen
if the passive fcp provider, e.g., tcm_fc, has not been registered yet.
Signed-off-by: Yi Zou <yi.zou@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Neil Horman [Fri, 6 Jul 2012 17:40:05 +0000 (10:40 -0700)]
[SCSI] fcoe: Cleanup locking on fcoe_percpu_receive_thread
Noticed that we can shuffle the code around in fcoe_percpu_receive_thread a bit
and avoid taking the fcoe_rx_list lock twice per iteration. This should improve
throughput somewhat. With this change we take the lock, and check for new
frames in a single critical section. Only if the list is empty do we drop the
lock and re-acquire it after being signaled to wake up.
Change Notes:
v2) did some further cleanup on the patch by replacing the 2nd call of
spin_lock/splice_init with a goto to the top of the outer loop. This allows me
to change the inner while loop to an if conditional and remove the sencond check
of kthread_should_stop. Based on suggestion from Vasu Dev.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Robert Love [Fri, 6 Jul 2012 17:40:20 +0000 (10:40 -0700)]
[SCSI] fcoe: Remove redundant 'less than zero' check
strtoul returns an 'unsigned long' so there is no
reason to check if the value is less than zero.
strtoul already checks for the '-' character deep
in its bowels. It will return an error if the user
has provided a negative value and fcoe_str_to_dev_loss
will return that error to its caller.
This patch fixes the following Coverity reported warning:
CID 703581 - NO_EFFECT Unsigned compared against 0 - This
less-than-zero comparison of an unsigned value is never true. "*val < 0UL".
drivers/scsi/fcoe/fcoe_sysfs.c:105
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vasu Dev [Fri, 6 Jul 2012 17:40:10 +0000 (10:40 -0700)]
[SCSI] libfc: add exch timer debug info
Add exch timeout info to have debug log with exch timeout
value to match with retries, also add debug info
on exch timer cancel.
Added common fc_exch_timer_cancel() func and grouped this
along with fc_exch_timer_set() function, so that
added debug code is not repeated.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Lin Ming [Fri, 6 Jul 2012 04:06:57 +0000 (12:06 +0800)]
[SCSI] scsi_pm: set device runtime state before parent suspended
There is a race in scsi_bus_resume_common when set device's runtime
state to active after pm_runtime_put_sync(dev->parent).
Parent device may have been suspended so pm_runtime_set_active(dev) will
fail with -EBUSY.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Bottomley [Thu, 21 Jun 2012 07:50:02 +0000 (07:50 +0000)]
[SCSI] lpfc: fix problems with -Werror
Commit
d38bd3aef ("Add -Werror compilation flag") is causing build breakage
with random gcc incarnations. These look like gcc problems, but we shouldn't
break the build because of a bad gcc. Fix this by adding a make flag
WARNINGS_BECOME_ERRORS=1
which is the same as aic7xxx uses so ordinarily the build doesn't use -Werror
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Alex Iannicelli <alex.iannicelli@emulex.com>
Cc: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Carpenter [Fri, 22 Jun 2012 06:36:35 +0000 (23:36 -0700)]
[SCSI] mvsas: remove unused variable in mvs_task_exec()
We don't use "dev" any more after
07ec747a5f ("libsas: remove
ata_port.lock management duties from lldds") and it causes a compile
warning.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Xiangliang Yu <yuxiangl@marvell.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:36:30 +0000 (23:36 -0700)]
[SCSI] libsas: trim sas_task of slow path infrastructure
The timer and the completion are only used for slow path tasks (smp, and
lldd tmfs), yet we incur the allocation space and cpu setup time for
every fast path task.
Cc: Xiangliang Yu <yuxiangl@marvell.com>
Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:36:25 +0000 (23:36 -0700)]
[SCSI] libsas: drop sata port multiplier infrastructure
On the way to add a new sata_device field, noticed that libsas is
carrying port multiplier infrastructure that is explicitly disabled by
sas_discover_sata(). The aic94xx touches the unused port_no, so leave
that field in case there was some use for it.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:36:20 +0000 (23:36 -0700)]
[SCSI] libsas: fix sas_discover_devices return code handling
commit
198439e4 [SCSI] libsas: do not set res = 0 in sas_ex_discover_dev()
commit
19252de6 [SCSI] libsas: fix wide port hotplug issues
The above commits seem to have confused the return value of
sas_ex_discover_dev which is non-zero on failure and
sas_ex_join_wide_port which just indicates short circuiting discovery on
already established ports. The result is random discovery failures
depending on configuration.
Calls to sas_ex_join_wide_port are the source of the trouble as its
return value is errantly assigned to 'res'. Convert it to bool and stop
returning its result up the stack.
Cc: <stable@vger.kernel.org>
Tested-by: Dan Melnic <dan.melnic@amd.com>
Reported-by: Dan Melnic <dan.melnic@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:36:15 +0000 (23:36 -0700)]
[SCSI] libsas: continue revalidation
Continue running revalidation until no more broadcast devices are
discovered. Fixes cases where re-discovery completes too early in a
domain with multiple expanders with pending re-discovery events.
Servicing BCNs can get backed up behind error recovery.
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Jeff Skirvin [Fri, 22 Jun 2012 06:36:10 +0000 (23:36 -0700)]
[SCSI] libsas: sas_rediscover_dev did not look at the SMP exec status.
The discovery function "sas_rediscover_dev" had two bugs: 1) it did
not pay attention to the return status from the SMP task execution;
2) the stack variable used for the returned SAS address was compared
against 0 without being initialized.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:31:04 +0000 (23:31 -0700)]
[SCSI] isci: use sas eh strategy handlers
...now that the strategy handlers guarantee eh context and notify
the driver of bus reset.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:30:58 +0000 (23:30 -0700)]
[SCSI] libsas: use ->lldd_I_T_nexus_reset for ->eh_bus_reset_handler
sas_eh_bus_reset_handler() amounts to sas_phy_reset() without
notification of the reset to the lldd. If this is triggered from
eh-cmnd recovery there may be sas_tasks for the lldd to terminate, so
->lldd_I_T_nexus_reset is warranted.
Cc: Xiangliang Yu <yuxiangl@marvell.com>
Cc: Luben Tuikov <ltuikov@yahoo.com>
Cc: Jack Wang <jack_wang@usish.com>
Reviewed-by: Jacek Danecki <jacek.danecki@intel.com>
[jacek: modify pm8001_I_T_nexus_reset to return -ENODEV]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:30:53 +0000 (23:30 -0700)]
[SCSI] libsas: add sas_eh_abort_handler
When recovering failed eh-cmnds let the lldd attempt an abort via
scsi_abort_eh_cmnd before escalating.
Reviewed-by: Jacek Danecki <jacek.danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:30:48 +0000 (23:30 -0700)]
[SCSI] libsas: enforce eh strategy handlers only in eh context
The strategy handlers may be called in places that are problematic for
libsas (i.e. sata resets outside of domain revalidation filtering /
libata link recovery), or problematic for userspace (non-blocking ioctl
to sleeping reset functions). However, these routines are also called
for eh escalations and recovery of scsi_eh_prep_cmnd(), so permit them
as long as we are running in the host's error handler, otherwise arrange
for them to be triggered in eh_context.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:25:42 +0000 (23:25 -0700)]
[SCSI] cleanup setting task state in scsi_error_handler()
A quick reading of scsi_error_handler() one could come away with the
impression that it does its wakeup event check while the task state is
TASK_RUNNING. In fact it sets TASK_INTERRUPTIBLE at the bottom of the
loop, but that is ~50 lines down.
Just set TASK_INTERRUPTIBLE at the top of loop and be done.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Maciej Trela [Fri, 22 Jun 2012 06:25:37 +0000 (23:25 -0700)]
[SCSI] libsas: cleanup spurious calls to scsi_schedule_eh
eh is woken up automatically by the presence of failed commands,
scsi_schedule_eh is reserved for cases where there are no failed
commands. This guarantees that host_eh_sceduled is only incremented
when an explicit eh request is made.
Reviewed-by: Jacek Danecki <jacek.danecki@intel.com>
Signed-off-by: Maciej Trela <maciej.trela@intel.com>
[fixed spurious delete of sas_ata_task_abort]
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:25:32 +0000 (23:25 -0700)]
[SCSI] fix eh wakeup (scsi_schedule_eh vs scsi_restart_operations)
Rapid ata hotplug on a libsas controller results in cases where libsas
is waiting indefinitely on eh to perform an ata probe.
A race exists between scsi_schedule_eh() and scsi_restart_operations()
in the case when scsi_restart_operations() issues i/o to other devices
in the sas domain. When this happens the host state transitions from
SHOST_RECOVERY (set by scsi_schedule_eh) back to SHOST_RUNNING and
->host_busy is non-zero so we put the eh thread to sleep even though
->host_eh_scheduled is active.
Before putting the error handler to sleep we need to check if the
host_state needs to return to SHOST_RECOVERY for another trip through
eh. Since i/o that is released by scsi_restart_operations has been
blocked for at least one eh cycle, this implementation allows those
i/o's to run before another eh cycle starts to discourage hung task
timeouts.
Cc: <stable@vger.kernel.org>
Reported-by: Tom Jackson <thomas.p.jackson@intel.com>
Tested-by: Tom Jackson <thomas.p.jackson@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:25:27 +0000 (23:25 -0700)]
[SCSI] libata, libsas: introduce sched_eh and end_eh port ops
When managing shost->host_eh_scheduled libata assumes that there is a
1:1 shost-to-ata_port relationship. libsas creates a 1:N relationship
so it needs to manage host_eh_scheduled cumulatively at the host level.
The sched_eh and end_eh port port ops allow libsas to track when domain
devices enter/leave the "eh-pending" state under ha->lock (previously
named ha->state_lock, but it is no longer just a lock for ha->state
changes).
Since host_eh_scheduled indicates eh without backing commands pinning
the device it can be deallocated at any time. Move the taking of the
domain_device reference under the port_lock to guarantee that the
ata_port stays around for the duration of eh.
Reviewed-by: Jacek Danecki <jacek.danecki@intel.com>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Williams [Fri, 22 Jun 2012 06:47:28 +0000 (23:47 -0700)]
[SCSI] fix hot unplug vs async scan race
The following crash results from cases where the end_device has been
removed before scsi_sysfs_add_sdev has had a chance to run.
BUG: unable to handle kernel NULL pointer dereference at
0000000000000098
IP: [<
ffffffff8115e100>] sysfs_create_dir+0x32/0xb6
...
Call Trace:
[<
ffffffff8125e4a8>] kobject_add_internal+0x120/0x1e3
[<
ffffffff81075149>] ? trace_hardirqs_on+0xd/0xf
[<
ffffffff8125e641>] kobject_add_varg+0x41/0x50
[<
ffffffff8125e70b>] kobject_add+0x64/0x66
[<
ffffffff8131122b>] device_add+0x12d/0x63a
[<
ffffffff814b65ea>] ? _raw_spin_unlock_irqrestore+0x47/0x56
[<
ffffffff8107de15>] ? module_refcount+0x89/0xa0
[<
ffffffff8132f348>] scsi_sysfs_add_sdev+0x4e/0x28a
[<
ffffffff8132dcbb>] do_scan_async+0x9c/0x145
...teach scsi_sysfs_add_devices() to check for deleted devices() before
trying to add them, and teach scsi_remove_target() how to remove targets
that have not been added via device_add().
Cc: <stable@vger.kernel.org>
Reported-by: Dariusz Majchrzak <dariusz.majchrzak@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Ben Collins [Mon, 11 Jun 2012 20:14:36 +0000 (16:14 -0400)]
[SCSI] aacraid: Fix endian issues in core and SRC portions of driver
This may not fix all endian issues in this driver, but it does get the
driver working on PowerPC for a PMC SRC card. So it should at least fix
all the problems in the core and in the SRC support.
[jejb: fix >> 32 breakage reported by Fengguang Wu]
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Acked-by: Achim Leubner <Achim_Leubner@pmc-sierra.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Ben Collins [Mon, 11 Jun 2012 18:44:44 +0000 (14:44 -0400)]
[SCSI] aacraid: Relax the tight timeout loop on fib commands
The loop that waited for syncronous fib commands was causing a CPU stall
when a timeout actually occured.
1) Switch to using a more accurate timeout mechanism.
2) Do not pace the loop with udelay(). Use cpu_relax() to allow for
scheduling to occur.
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Acked-by: Achim Leubner <Achim_Leubner@pmc-sierra.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Ben Collins [Mon, 11 Jun 2012 18:16:36 +0000 (14:16 -0400)]
[SCSI] aacraid: Better handling of in-flight events on thread stop
When an error occured that would shut down the driver, some in-flight
events were getting caught up, deadlocking a CPU or two.
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Acked-by: Achim Leubner <Achim_Leubner@pmc-sierra.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Ben Collins [Mon, 11 Jun 2012 18:05:02 +0000 (14:05 -0400)]
[SCSI] aacraid: Use resource_size_t for IO mem pointers and offsets
This also stops using the "legacy crap" in Scsi_Host (shost->base is an
unsigned long).
This affected 32-bit systems that have 64-bit resource sizes, causing the
IO address to be truncated.
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Acked-by: Achim Leubner <Achim_Leubner@pmc-sierra.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Mike Snitzer [Tue, 26 Jun 2012 18:32:03 +0000 (14:32 -0400)]
[SCSI] scsi_dh: add scsi_dh_attached_handler_name
Introduce scsi_dh_attached_handler_name() to retrieve the name of the
scsi_dh that is attached to the scsi_device associated with the provided
request queue. Returns NULL if a scsi_dh is not attached.
Also, fix scsi_dh_{attach,detach} function header comments to document
@q rather than @sdev.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Tested-by: Babu Moger <babu.moger@netapp.com>
Reviewed-by: Chandra Seetharaman <sekharan@us.ibm.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Karen Xie [Thu, 28 Jun 2012 23:49:07 +0000 (16:49 -0700)]
[SCSI] cxgb4i: tcp push bit fix
Fixed the parentheses so the tcp push bit would be sent properly.
Signed-off-by: Karen Xie <kxie@chelsio.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bart Van Assche [Fri, 29 Jun 2012 15:36:07 +0000 (15:36 +0000)]
[SCSI] Stop accepting SCSI requests before removing a device
Avoid that the code for requeueing SCSI requests triggers a
crash by making sure that that code isn't scheduled anymore
after a device has been removed.
Also, source code inspection of __scsi_remove_device() revealed
a race condition in this function: no new SCSI requests must be
accepted for a SCSI device after device removal started.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bart Van Assche [Fri, 29 Jun 2012 15:35:05 +0000 (15:35 +0000)]
[SCSI] Change return type of scsi_queue_insert() into void
The return value of scsi_queue_insert() is ignored by all its
callers, hence change the return type of this function into
void.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bart Van Assche [Fri, 29 Jun 2012 15:34:26 +0000 (15:34 +0000)]
[SCSI] Avoid dangling pointer in scsi_requeue_command()
When we call scsi_unprep_request() the command associated with the request
gets destroyed and therefore drops its reference on the device. If this was
the only reference, the device may get released and we end up with a NULL
pointer deref when we call blk_requeue_request.
Reported-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Tejun Heo <tj@kernel.org>
Cc: <stable@kernel.org>
[jejb: enhance commend and add commit log for stable]
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bart Van Assche [Fri, 29 Jun 2012 15:33:22 +0000 (15:33 +0000)]
[SCSI] Fix device removal NULL pointer dereference
Use blk_queue_dead() to test whether the queue is dead instead
of !sdev. Since scsi_prep_fn() may be invoked concurrently with
__scsi_remove_device(), keep the queuedata (sdev) pointer in
__scsi_remove_device(). This patch fixes a kernel oops that
can be triggered by USB device removal. See also
http://www.spinics.net/lists/linux-scsi/msg56254.html.
Other changes included in this patch:
- Swap the blk_cleanup_queue() and kfree() calls in
scsi_host_dev_release() to make that code easier to grasp.
- Remove the queue dead check from scsi_run_queue() since the
queue state can change anyway at any point in that function
where the queue lock is not held.
- Remove the queue dead check from the start of scsi_request_fn()
since it is redundant with the scsi_device_online() check.
Reported-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Tejun Heo <tj@kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Muthukumar Ratty [Fri, 29 Jun 2012 15:31:49 +0000 (15:31 +0000)]
[SCSI] block: Fix blk_execute_rq_nowait() dead queue handling
If the queue is dead blk_execute_rq_nowait() doesn't invoke the done()
callback function. That will result in blk_execute_rq() being stuck
in wait_for_completion(). Avoid this by initializing rq->end_io to the
done() callback before we check the queue state. Also, make sure the
queue lock is held around the invocation of the done() callback. Found
this through source code review.
Signed-off-by: Muthukumar Ratty <muthur@gmail.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Tejun Heo <tj@kernel.org>
Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Carpenter [Wed, 27 Jun 2012 09:00:30 +0000 (12:00 +0300)]
[SCSI] megaraid: remove a spurious IRQ enable
We took this lock with spin_lock() so we should unlock it with
spin_unlock() instead of spin_unlock_irq(). This was introduced in
f2c8dc402b "[SCSI] megaraid_mbox: remove scsi_assign_lock usage".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Carpenter [Wed, 27 Jun 2012 09:08:25 +0000 (12:08 +0300)]
[SCSI] megaraid: cleanup type issue in mega_build_cmd()
On 64 bit systems the current code sets 32 bits of "seg" and leaves the
other 32 uninitialized. It doesn't matter since the variable is never
used. But it's still messy and we should fix it.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Carpenter [Wed, 27 Jun 2012 08:59:58 +0000 (11:59 +0300)]
[SCSI] bfa: dereferencing freed memory in bfad_im_probe()
If bfad_thread_workq(bfad) was not BFA_STATUS_OK then we freed "im"
and then dereferenced it.
I did a little clean up because it seemed nicer to return directly
instead of doing a superfluous goto. I looked at other functions in
this file and it seems like returning directly is standard.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Carpenter [Wed, 27 Jun 2012 08:59:36 +0000 (11:59 +0300)]
[SCSI] bfa: off by one in bfa_ioc_mbox_isr()
If mc == BFI_MC_MAX then we're reading past the end of the
mod->mbhdlr[] array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Josh Hunt [Sat, 9 Jun 2012 14:03:39 +0000 (07:03 -0700)]
[SCSI] properly initialize atomic_t
Initialize atomic_t scsi_host_next_hn and ioerr_cntas per the guidelines
defined in Documentation/atomic_ops.txt
Signed-off-by: Josh Hunt <johunt@akamai.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bart Van Assche [Fri, 22 Jun 2012 08:49:38 +0000 (08:49 +0000)]
[SCSI] scsi_dh_alua: Re-enable STPG for unavailable ports
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 re-enable
sending STPG to a target port group that is in the unavailable state.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Babu Moger <babu.moger@netapp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vikas Chaudhary [Thu, 14 Jun 2012 10:35:51 +0000 (06:35 -0400)]
[SCSI] qla4xxx: Update driver version to 5.02.00-k18
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vikas Chaudhary [Thu, 14 Jun 2012 14:13:53 +0000 (10:13 -0400)]
[SCSI] qla4xxx: Fix Spell check.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vikas Chaudhary [Thu, 14 Jun 2012 10:35:49 +0000 (06:35 -0400)]
[SCSI] qla4xxx: Fix a Sparse warning message
Fix following message:-
drivers/scsi/qla4xxx/ql4_os.c:3266:5: error: symbol 'qla4xxx_post_aen_work' redeclared with different type (originally declared at drivers/scsi/qla4xxx/ql4_glbl.h:186) - incompatible argument 2 (different signedness)
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vikas Chaudhary [Thu, 14 Jun 2012 10:35:48 +0000 (06:35 -0400)]
[SCSI] qla4xxx: multi-session fix for flash ddbs
Allow multi-session to target (for flash ddbs) accesible via
multiple network portal
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Rob Evers [Fri, 18 May 2012 18:08:56 +0000 (14:08 -0400)]
[SCSI] scsi_dh_alua: backoff alua rtpg retry linearly vs. geometrically
Currently the backoff algorithm for when to retry alua rtpg
requests progresses geometrically as so:
2, 4, 8, 16, 32, 64... seconds.
This progression can lead to un-needed delay in retrying
alua rtpg requests when the rtpgs are delayed. A less
aggressive backoff algorithm that is additive would not
lead to such large jumps when delays start getting long, but
would backoff linearly:
2, 4, 6, 8, 10... seconds.
Signed-off-by: Martin George <marting@netapp.com>
Signed-off-by: Rob Evers <revers@redhat.com>
Reviewed-by: Babu Moger <babu.moger@netapp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Rob Evers [Fri, 18 May 2012 18:08:55 +0000 (14:08 -0400)]
[SCSI] scsi_dh_alua: retry alua rtpg extended header for illegal request response
Some storage arrays are known to return 'illegal request'
when an rtpg extended header request is made. T10 says the
array should ignore the bit, and return the non-extended
rtpg as the array doesn't support the request. Working
around this by retrying the rtpg request without the extended
header bit set when the extended rtpg request results in
illegal request.
Signed-off-by: Rob Evers <revers@redhat.com>
Reviewed-by: Babu Moger <babu.moger@netapp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Rob Evers [Fri, 18 May 2012 18:08:54 +0000 (14:08 -0400)]
[SCSI] scsi_dh_alua: implement 'implied transition timeout'
During alua transitions, an array can return transitioning
status in response to rtpg requests. These requests get
retried for a maximum of 60 seconds by default before timing
out. Sometimes this timeout isn't sufficient to allow the
array to complete the transition. T10-spc4 addresses this
under 'Report Target Port Groups' command.
This update retrieves the timeout value from the storage
array if available and retries the transitioning rtpgs
for up to the 'implied transitioning timeout' value
Signed-off-by: Rob Evers <revers@redhat.com>
Reviewed-by: Babu Moger <babu.moger@netapp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Dan Carpenter [Sat, 9 Jun 2012 09:10:19 +0000 (12:10 +0300)]
[SCSI] arcmsr: fix misuse of | instead of &
ARCMSR_ARC1880_DiagWrite_ENABLE is 0x00000080 so (x | 0x00000080) is
never zero. The intent here was to test that loop until
ARCMSR_ARC1880_DiagWrite_ENABLE was turned on, but because the test was
wrong, we would do five loops regardless of whether it succeed or not.
Also I simplified the condition a little by removing the unused
assignement.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Nick Cheng <nick.cheng@areca.com.tw>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
HighPoint Linux Team [Thu, 14 Jun 2012 07:47:07 +0000 (08:47 +0100)]
[SCSI] hptiop: fix RR312x in hosts with >12GB
As the limitation of RR312x's dma engine, the HBA can not access host memory
over 12GB. This fixes
https://bugzilla.kernel.org/show_bug.cgi?id=14311
[alan: resurrected bug from 2009 and pushed upstream]
Reported-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: HighPoint Linux Team <linux@highpoint-tech.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:55:16 +0000 (13:55 -0400)]
[SCSI] lpfc 8.3.32: Update lpfc to version 8.3.32
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:55:07 +0000 (13:55 -0400)]
[SCSI] lpfc 8.3.32: Fix error reporting of misconfigured ports
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:54:59 +0000 (13:54 -0400)]
[SCSI] lpfc 8.3.32: Fix system panic due to node state change
Fix System Panic During IO Test using Medusa tool
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:54:50 +0000 (13:54 -0400)]
[SCSI] lpfc 8.3.32: Fix ability to change FCP EQ delay multiplier
Fix fcp_imax module parameter to dynamically change FCP EQ delay multiplier
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:54:42 +0000 (13:54 -0400)]
[SCSI] lpfc 8.3.32: Correct successful aborts returning error status
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:54:36 +0000 (13:54 -0400)]
[SCSI] lpfc 8.3.32: Correct provisioning change failure on local function
Fixed system held-up when performing resource provsion through same PCI
function
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:54:27 +0000 (13:54 -0400)]
[SCSI] lpfc 8.3.32: Correct host DIF configuration that hung system
Fix system hang due to bad protection module parameters (CR: 130769)
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:54:20 +0000 (13:54 -0400)]
[SCSI] lpfc 8.3.32: Fix CQ and EQ dump failure for debugfs
Fixed debug helper routine failed to dump CQ and EQ entries in non-MSI-X mode
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:54:11 +0000 (13:54 -0400)]
[SCSI] lpfc 8.3.32: Correct null pointer Error in lpfc_sli.c
This patch corrects the issue caught via Smatch and reported by Dan Carpenter:
http://marc.info/?l=linux-scsi&m=
133693516103343
Resolve null pointer check ordering that were odd
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Tue, 12 Jun 2012 17:54:02 +0000 (13:54 -0400)]
[SCSI] lpfc 8.3.32: lpfc_sli.c: add missing jumps to mempool_free
Incorporate patch originally supplied by Julia Lawall <Julia.Lawall@lip6.fr>
http://marc.info/?l=linux-scsi&m=
133572879711140&w=2
"It appears that mempool_free should be performed on these failures as on
the other exists from the containing functions."
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bhanu Prakash Gollapudi [Thu, 7 Jun 2012 09:19:37 +0000 (02:19 -0700)]
[SCSI] bnx2fc: Bumped version to 1.0.12
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bhanu Prakash Gollapudi [Thu, 7 Jun 2012 09:19:36 +0000 (02:19 -0700)]
[SCSI] bnx2fc: use list_entry instead of explicit cast
Use list_for_each_entry_safe() instead of explicit cast to avoid relying on
struct layout
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bhanu Prakash Gollapudi [Thu, 7 Jun 2012 09:19:35 +0000 (02:19 -0700)]
[SCSI] bnx2fc: Improve error recovery by handling parity errors
During parity errors, the ramrods are not issued to FW. bnx2fc waits for the
timeout value, and proceeds with cleaning up the IOs. Since we are already
out-of-sync with FW, cleanup commands timeout too, and do not get the
completion. This operation takes 36 secs for each session to upload causing
huge delays. To fix this, bnx2fc now gets a PARITY_ERROR from cnic driver, and
upon failure, the driver does not issue any commands to the FW and finishes the
upload process sooner.
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Mike Christie [Fri, 18 May 2012 04:56:58 +0000 (23:56 -0500)]
[SCSI] remove old comment from block/unblock functions
We do not hold the host lock when calling these functions,
so remove comment.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Mike Christie [Fri, 18 May 2012 04:56:57 +0000 (23:56 -0500)]
[SCSI] core, classes, mpt2sas: have scsi_internal_device_unblock take new state
This has scsi_internal_device_unblock/scsi_target_unblock take
the new state to set the devices as an argument instead of
always setting to running. The patch also converts users of these
functions.
This allows the FC and iSCSI class to transition devices from blocked
to transport-offline, so that when fast_io_fail/replacement_timeout
has fired we do not set the devices back to running. Instead, we
set them to SDEV_TRANSPORT_OFFLINE.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Mike Christie [Fri, 18 May 2012 04:56:56 +0000 (23:56 -0500)]
[SCSI] add new SDEV_TRANSPORT_OFFLINE state
This patch adds a new state SDEV_TRANSPORT_OFFLINE. It will
be used by transport classes to offline devices for cases like
when the fast_io_fail/recovery_tmo fires. In those cases we
want all IO to fail, and we have not yet escalated to dev_loss_tmo
behavior where we are removing the devices.
Currently to handle this state, transport classes are setting
the scsi_device's state to running, setting their internal
session/port structs state to something that indicates failed,
and then failing IO from some transport check in the queuecommand.
The reason for the new value is so that users can distinguish
between a device failure that is a result of a transport problem
vs the wide range of errors that devices get offlined for
when a scsi command times out and we offline the devices there.
It also fixes the confusion as to why the transport class is
failing IO, but has set the device state from blocked to running.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Mark Rustad [Wed, 6 Jun 2012 18:59:48 +0000 (11:59 -0700)]
[SCSI] libfcoe: Fix section mismatch
Recent changes to add fcoe_sysfs caused libfcoe_init to call fcoe_transport_exit
in a module initialization routine. The change resulted in the below error. This
patch removes the __exit keyword from the fcoe_transport_exit definition such
that it may be called from an __init routine.
WARNING: drivers/scsi/fcoe/libfcoe.o(.init.text+0x21): Section mismatch in reference from the function init_module() to the function .exit.text:fcoe_transp
exit()
The function __init init_module() references
a function __exit fcoe_transport_exit().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
fcoe_transport_exit() so it may be used outside an exit section.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bhanu Prakash Gollapudi [Mon, 4 Jun 2012 23:15:44 +0000 (16:15 -0700)]
[SCSI] bnx2fc: Support interface creation on non-VLAN interface also.
bnx2fc had an assumption that the fcoe interface will always start on the vlan
dev. However, some switch implementations (Eg., HP virtual connect FlexFabric)
expects the fcoe interface to be started on physical interface. Do not error
out if the netdev is not a vlan dev.
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Joe Perches [Mon, 4 Jun 2012 23:15:43 +0000 (16:15 -0700)]
[SCSI] bnx2fc: Reduce object size by consolidating formats
Deduplication of formats and consolidating tests
makes the object much smaller.
Add bnx2fc_debug.c, add functions for a few logging
functions (BNX2FC_IO_DBG, BNX2FC_TGT_DBG, BNX2FC_HBA_DBG).
Use printf extension %pV.
Add and use pr_fmt and pr_<level>.
Move the debug #include below structure definitions.
$ size drivers/scsi/bnx2fc/built-in.o*
text data bss dec hex filename
101563 1165 24976 127704 1f2d8 drivers/scsi/bnx2fc/built-in.o.new
138473 1109 33400 172982 2a3b6 drivers/scsi/bnx2fc/built-in.o.old
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Eric Dumazet [Mon, 4 Jun 2012 23:15:42 +0000 (16:15 -0700)]
[SCSI] bnx2fc: use kthread_create_on_node
Since bnx2fc_percpu_thread_create() creates percpu kthread, it makes
sense to use kthread_create_on_node() to get proper NUMA affinity for
kthread stack.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Bottomley [Sun, 27 May 2012 09:13:46 +0000 (10:13 +0100)]
[SCSI] Remove scsi_wait_scan module
scsi_wait_scan was introduced with asynchronous host scanning as a hack
for distributions that weren't using proper udev based wait for root to
appear in their initramfs scripts. In 2.6.30 Commit
c751085943362143f84346d274e0011419c84202
Author: Rafael J. Wysocki <rjw@sisk.pl>
Date: Sun Apr 12 20:06:56 2009 +0200
PM/Hibernate: Wait for SCSI devices scan to complete during resume
Actually broke scsi_wait_scan because it renders
scsi_complete_async_scans() a nop for modular SCSI if you include
scsi_scans.h (which this module does).
The lack of bug reports is sufficient proof that this module is no
longer used.
Cc: Jeff Mahoney <jeffm@suse.de>
Cc: Dave Jones <davej@redhat.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vasu Dev [Fri, 25 May 2012 17:26:54 +0000 (10:26 -0700)]
[SCSI] libfc: update fcp and exch stats
Updates newly added stats from fc_get_host_stats,
added new function fc_exch_update_stats to
update exches related stats from fc_exch.c
by going thru internal ema_list elements.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Acked-by : Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vasu Dev [Fri, 25 May 2012 17:26:48 +0000 (10:26 -0700)]
[SCSI] libfc: adds FCP failures stats
Adds stats to track FCP pkt and frame alloc
failure.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Acked-by : Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vasu Dev [Fri, 25 May 2012 17:26:43 +0000 (10:26 -0700)]
[SCSI] libfc, fcoe, bnx2fc: cleanup fcoe_dev_stats
The libfc is used by fcoe but fcoe agnostic,
and therefore should not have any fcoe references.
So renaming fcoe_dev_stats from libfc as its for fc_stats.
After that libfc is fcoe string free except some strings for
Open-FCoE.org.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Acked-by : Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Acked-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Vasu Dev [Fri, 25 May 2012 17:26:38 +0000 (10:26 -0700)]
[SCSI] fc: add some more FC specific stats to fc_host
The libfc provides more flexibility and with that
we can monitor some more FC specific stats for
FC exches or FCP error cases, this patch add
such new FC stats.
The patch adds *only* FC specific new stats to
existing fc_host attribute container.
Added stats names are self explanatory as
existing FC stats already has, however anyway
still added commentary along their definition
to describe them.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Acked-by : Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Linus Torvalds [Thu, 19 Jul 2012 23:11:28 +0000 (16:11 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client
Pull last minute Ceph fixes from Sage Weil:
"The important one fixes a bug in the socket failure handling behavior
that was turned up in some recent failure injection testing. The
other two are minor bug fixes."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
rbd: endian bug in rbd_req_cb()
rbd: Fix ceph_snap_context size calculation
libceph: fix messenger retry
Linus Torvalds [Thu, 19 Jul 2012 15:27:13 +0000 (08:27 -0700)]
Merge tag 'md-3.5-fixes' of git://neil.brown.name/md
Pull three md bugfixes from NeilBrown:
"One of the bugs was introduced in 3.5-rc1. Others have been there for
longer."
* tag 'md-3.5-fixes' of git://neil.brown.name/md:
md/raid1: close some possible races on write errors during resync
md: avoid crash when stopping md array races with closing other open fds.
md: fix bug in handling of new_data_offset
Linus Torvalds [Thu, 19 Jul 2012 15:21:13 +0000 (08:21 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking changes from David Miller:
"Ok, we should be good to go now"
1) We have to statically initialize the init_net device list head rather
than do so in an initcall, otherwise netprio_cgroup crashes if it's
built statically rather than modular (Mark D. Rustad)
2) Fix SKB null oopser in CIPSO ipv4 option processing (Paul Moore)
3) Qlogic maintainers update (Anirban Chakraborty)
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
net: Statically initialize init_net.dev_base_head
MAINTAINERS: Changes in qlcnic and qlge maintainers list
cipso: don't follow a NULL pointer when setsockopt() is called
Linus Torvalds [Thu, 19 Jul 2012 15:15:55 +0000 (08:15 -0700)]
Merge branch 'upstream-fixes' of git://git./linux/kernel/git/jikos/hid
Pull HID update from Jiri Kosina:
"A final round of changes for HID for 3.5: just device ID additions."
* 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: hid-multitouch: add support for Zytronic panels
HID: add Sennheiser BTD500USB device support
HID: add battery quirk for Apple Wireless ANSI
Ezequiel Garcia [Wed, 18 Jul 2012 13:05:26 +0000 (10:05 -0300)]
cx25821: Remove bad strcpy to read-only char*
The strcpy was being used to set the name of the board. Since the
destination char* was read-only and the name is set statically at
compile time; this was both wrong and redundant.
The type of char* is changed to const char* to prevent future errors.
Reported-by: Radek Masin <radek@masin.eu>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
[ Taking directly due to vacations - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Benjamin Tissoires [Tue, 19 Jun 2012 12:39:54 +0000 (14:39 +0200)]
HID: hid-multitouch: add support for Zytronic panels
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
NeilBrown [Thu, 19 Jul 2012 05:59:18 +0000 (15:59 +1000)]
md/raid1: close some possible races on write errors during resync
commit
4367af556133723d0f443e14ca8170d9447317cb
md/raid1: clear bad-block record when write succeeds.
Added a 'reschedule_retry' call possibility at the end of
end_sync_write, but didn't add matching code at the end of
sync_request_write. So if the writes complete very quickly, or
scheduling makes it seem that way, then we can miss rescheduling
the request and the resync could hang.
Also commit
73d5c38a9536142e062c35997b044e89166e063b
md: avoid races when stopping resync.
Fix a race condition in this same code in end_sync_write but didn't
make the change in sync_request_write.
This patch updates sync_request_write to fix both of those.
Patch is suitable for 3.1 and later kernels.
Reported-by: Alexander Lyakas <alex.bolshoy@gmail.com>
Original-version-by: Alexander Lyakas <alex.bolshoy@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 19 Jul 2012 05:59:18 +0000 (15:59 +1000)]
md: avoid crash when stopping md array races with closing other open fds.
md will refuse to stop an array if any other fd (or mounted fs) is
using it.
When any fs is unmounted of when the last open fd is closed all
pending IO will be flushed (e.g. sync_blockdev call in __blkdev_put)
so there will be no pending IO to worry about when the array is
stopped.
However in order to send the STOP_ARRAY ioctl to stop the array one
must first get and open fd on the block device.
If some fd is being used to write to the block device and it is closed
after mdadm open the block device, but before mdadm issues the
STOP_ARRAY ioctl, then there will be no last-close on the md device so
__blkdev_put will not call sync_blockdev.
If this happens, then IO can still be in-flight while md tears down
the array and bad things can happen (use-after-free and subsequent
havoc).
So in the case where do_md_stop is being called from an open file
descriptor, call sync_block after taking the mutex to ensure there
will be no new openers.
This is needed when setting a read-write device to read-only too.
Cc: stable@vger.kernel.org
Reported-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 19 Jul 2012 05:59:18 +0000 (15:59 +1000)]
md: fix bug in handling of new_data_offset
commit
c6563a8c38fde3c1c7fc925a10bde3ca20799301
md: add possibility to change data-offset for devices.
introduced a 'new_data_offset' attribute which should normally
be the same as 'data_offset', but can be explicitly set to a different
value to allow a reshape operation to move the data.
Unfortunately when the 'data_offset' is explicitly set through
sysfs, the new_data_offset is not also set, so the two would become
out-of-sync incorrectly.
One result of this is that trying to set the 'size' after the
'data_offset' would fail because it is not permitted to set the size
when the 'data_offset' and 'new_data_offset' are different - as that
can be confusing.
Consequently when mdadm tried to do this while assembling an IMSM
array it would fail.
This bug was introduced in 3.5-rc1.
Reported-by: Brian Downing <bdowning@lavos.net>
Bisected-by: Brian Downing <bdowning@lavos.net>
Tested-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: NeilBrown <neilb@suse.de>
Linus Torvalds [Thu, 19 Jul 2012 01:40:38 +0000 (18:40 -0700)]
Merge git://git./linux/kernel/git/nab/target-pending
Pull target fixes from Nicholas Bellinger:
"This includes a bugfix from MDR to address a NULL pointer OOPs with
FCoE aborts, along with a WRITE_SAME emulation bugfix for NOLB=0
cases, and persistent reservation return cleanups from Roland.
All three patches are CC'ed to stable."
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: Fix range calculation in WRITE SAME emulation when num blocks == 0
target: Clean up returning errors in PR handling code
tcm_fc: Fix crash seen with aborts and large reads
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