sas_task_abort() should simply abort the upper-level SCSI command and wait
until the error handler to send the actual ABORT TASK command. By
deferring things to the EH we simplify the concurrency coordination and
eliminate some race conditions. Note that sas_task_abort has a few hooks
to handle libsas internal commands properly too.
Also rename do_sas_task_abort to __sas_task_abort just in case we really
want to abort the task *right now* and we don't have a scsi_cmnd attached
to the command. This is a hook for libata internal commands to abort.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
When a SAS LLDD needs to request a device port reset, it needs to have all
commands aborted before it can reset the port. Since commands are put on
the EH's list in the order that they were queued, the LLDD can set a "need
reset" flag in the last task to be aborted so that the EH can reset the
port after all commands are aborted.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This flag is no longer necessary because we push tasks to be aborted into
the EH as soon as we possibly can, and let the SCSI EH code take care of
the coordination for which this flag was used.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
In this driver, TMF_QUERY_TASK translates to QUERY_SSP_TASK. The
sequencer, it seems, is perfectly happy sending us a SSP response, which
this function promptly "converts" into TMF_RESP_FUNC_FAILED. This leads to
the SAS EH making bad decisions based on bad data, so we should not perform
the conversion in this case.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The aic94xx module has a parameter that looks like it should set
lldd_max_execute_num in the sas_ha, but it never sets this value. Either
we should set it or remove the parameter. This allows us to enable task
collector mode for this driver, though it is still off by default.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
If we use task collector mode, we can end up destroying the task collector
thread before we release the ports, which is bad if a port release causes
a disk I/O (such as cache flushing).
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Every so often, a scsi_cmnd will time out, and the libsas timeout handler
will discover that the scsi_cmnd does not have a sas_task attached to it.
This can happen in two cases: (1) the scsi_cmnd actually made it through
libsas to the HBA and is now going through scsi_done, or (2) the
scsi_cmnd has been held up (host lock, slab alloc, etc) and libsas has
not yet attached a sas_task. In both cases, it is safe to ask SCSI for
more time to process the command via EH_RESET_TIMER; we cannot blindly
return EH_HANDLED because if (2) happens, we could end up calling
scsi_done while another CPU is heading towards sas_queuecommand, which
causes slab corruption when sas_task_done updates the freed scsi_cmnd.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch lets a user arbitrarily enable or disable a phy via sysfs.
Potential applications include shutting down a phy to replace one
lane of wide port, and (more importantly) providing a method for the
libata SATL to control the phy.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
On a system with many SAS targets, it appears possible that a scsi_cmnd
can time out without ever making it to the SAS LLDD or at the same time
that a completion is occurring. In both of these cases, telling the
LLDD to abort the sas_task makes no sense because the LLDD won't know
about the sas_task; what we really want to do is to increase the timer.
Note that this involves creating another sas_task bit to indicate
whether or not the task has been sent to the LLDD; I could have
implemented this by slightly redefining SAS_TASK_STATE_PENDING, but
this way seems cleaner.
This second version amends the aic94xx portion to set the
TASK_AT_INITIATOR flag for all sas_tasks that were passed to
lldd_execute_task.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
sas_get_port_device assigns a rphy to a domain device in anticipation
of finding a disk. When a discovery error occurs in
sas_discover_{sata,sas,expander}*, however, we need to clean up that
rphy and the port device list so that we don't GPF. In addition, we
need to check the result of the second sas_notify_lldd_dev_found.
This patch seems ok on a x260, x366 and x206m.
This patch fixes up sas_expander.c separately because jejb has some
cleanup patches of his own that are a prerequisite.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
sas_get_port_device assigns a rphy to a domain device in anticipation
of finding a disk. When a discovery error occurs in
sas_discover_{sata,sas,expander}*, however, we need to clean up that
rphy and the port device list so that we don't GPF. In addition, we
need to check the result of the second sas_notify_lldd_dev_found.
This patch seems ok on a x260, x366 and x206m.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Removed spin_unlock_irq()/spin_lock_irq() pairs surrounding
starget_for_each_device() calls.
As Matthew W. pointed out, starget_for_each_device() can be called under
a spinlock being held.
The change has been tested and verified on qla2xxx.ko module.
Thanks Matthew W. and Hisashi H. for help.
Signed-off-by: Andrew Vasquez <Andrew.vasquez@qlogic.com>
Signed-off-by: Seokmann Ju <Seokmann.ju@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Hi,
Minor typo ...
In my first iteration of patches (that got merged), the
BLIST_ATTACH_PQ3 actually had the value 0x800000, but that
got changed later to avoid conflicts. This piece must have
been overlooked.
You could obviously do something like %x and then add the
bitflags, but that looks overkill for something that does
not tend to change.
Please merge.
(Patch applied against latest 2.6.20rc version that I tested.)
From: Kurt Garloff <kurt@garloff.de>
Subject: [SCSI SCAN] Fix logging message for PQ3 devices
The blacklist flags BLIST_ATTACH_PQ3 has value 0x1000000,
not 0x800000.
Signed-off-by: Kurt Garloff <garloff@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
More megaraid kernel-doc fixes.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Sumant Patro <sumantp@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
kernel-doc modifications:
- change "@param var" notation to @var;
- change function/description separator from ':' to '-';
- change var/description separator from '-' to ':';
- fix a few doc. typos;
- don't use kernel-doc /** lead-in when the doc. block is not kernel-doc;
- use Linux common */ ending comment format instead of **/;
- use correct function parameter names;
- place function parameters immediately after the function short description;
- place kernel-doc immediately before its function or macro;
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Sumant Patro <sumantp@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
1. Changes in Initialization to fix kdump failure.
Send SYNC command on loading.
This command clears the pending commands in the adapter
and re-initialize its internal RAID structure.
Without this change, megaraid driver either panics or fails to
initialize the adapter during kdump's second kernel boot
if there are pending commands or interrupts from other devices
sharing the same IRQ.
2. Authors email-id domain name changed from lsil.com to lsi.com.
Also modified the MODULE_AUTHOR to megaraidlinux@lsi.com
Signed-off-by: Sumant Patro <sumant.patro@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
After discussions in the thread titled:
[PATCH] scsi_debug: illegal blocking memory allocation
here is a patch containing the discussed fix and some other
fixes and additions. The patch is against lk 2.6.20-rc3 .
The version is bumped to 1.81 .
ChangeLog:
- Change several GFP_KERNEL allocations to GFP_ATOMIC
as they can be called from queuecommand() context
- check above allocation returns and if out of memory
report DID_REQUEUE in two cases, DID_NO_CONNECT in
another, and fail slave configure() in another
- add support for WRITE BUFFER command
- add aborted_command error injection support
(opts mask 0x10), similar mechanism to
recovered_error injection.
Signed-off-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch makes the mptctl pass through available if
the mptsas driver is selected. Without this patch
if mptsas is the only fusion driver chosen, then
the mptctl is not presented as an option.
smp_utils uses the mptctl driver to pass SAS SMP
functions through a MPT SAS HBA.
Signed-off-by: Douglas Gilbert <dougg@torque.net>
Acked-by: "Moore, Eric" <Eric.Moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
scsi_retry_command only has a single caller, so there is no point
in having this function. Additionally the memset of the sense
buffer it does is entirely superflous as scsi_request_fn already
calls scsi_init_cmd_errh to perform this memset before the command
is reissued.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The D700 needs the burst length setting to the previous 53c700 default
of 8 otherwise it will be effectively disabled.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This is a patch, which allows not only disabling bursting but to specify
different burst lenghts. This feature is needed to get the 53c700 driver
working for the onboard SCSI controller of SNI RM machines, which only
work reliably with a 4 word burst length.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid:
HID: Fix DRIVER_DESC macro
HID: mousepoll parameter makes no sense for generic HID
HID: tiny patch to remove a kmalloc cast
HID: fix mappings for DiNovo Edge Keyboard - Logitech USB BT receiver
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
Revert "ACPI: ibm-acpi: make non-generic bay support optional"
ACPI: update MAINTAINERS
ACPI: schedule obsolete features for deletion
ACPI: delete two spurious ACPI messages
ACPI: rename cstate_entry_s to cstate_entry
ACPI: ec: enable printk on cmdline use
ACPI: Altix: ACPI _PRT support
Setting .ConfigBase and .Present is now done at the pcmcia core.
The driver cleanup missed a few places where the driver did set .Present
to PRESENT_OPTION and later to the values from the CIS. Setting to
PRESENT_OPTION now overrides the values from the CIS. So just remove
those lines.
Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This changes all HWRNG driver initcalls to module_init(). We must probe
the RNGs after the major kernel subsystems are already up and running (like
PCI).
This fixes Bug 7730.
http://bugzilla.kernel.org/show_bug.cgi?id=7730
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: Jan Beulich <jbeulich@novell.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add a load option to intel-rng to allow skipping the FWH detection,
necessary in case the BIOS has locked read-only the firmware hub space.
Also prevent any attempt to write to firmware space if it cannot be write
enabled (apparently caused hangs on some systems not having an FWH and thus
also not having a respective RNG).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix void cast and re-enable on sparc.
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
md raidX make_request functions strip off the BIO_RW_SYNC flag, thus
introducing additional latency.
Fixing this in raid1 and raid10 seems to be straightforward enough.
For our particular usage case in DRBD, passing this flag improved some
initialization time from ~5 minutes to ~5 seconds.
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: Lars Ellenberg <lars@linbit.com>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes the SH rtc driver to
(a) correctly report 'enabled' status with other alarm status;
(b) not duplicate that status in its procfs dump
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
While testing 2.6.20-rc3 on a machine with some CK804 chipsets, we noticed
that quirk_nvidia_ck804_msi_ht_cap() was not detecting HT MSI capabilities
anymore. It is actually caused by the MSI mapping on the root chipset
being the 2nd HT capability in the chain. pci_find_ht_capability() does
not seem to find anything but the first HT cap correctly, because it
forgets to increment the position before looking for the next cap. The
following patch seems to fix it.
At least, this proves that having a ttl is good idea since the machine
would have been stucked in an infinite loop if we didn't have a ttl :)
We have to pass pos + PCI_CAP_LIST_NEXT to __pci_find_next_cap_ttl to
get the next HT cap instead of the same one again.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Andrew J. Gallatin <gallatin@myri.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This reverts commit 2df910b4c3.
ACPI_BAY has not been merged into mainline yet, so the changes to ibm-acpi
related Kconfig entries that depend on ACPI_BAY were permanently disabling
ibm-acpi bay support. This is a serious regression for ThinkPad users.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6:
[PATCH] x86-64: Fix warnings in ia32_aout.c
[PATCH] i386: Convert some functions to __init to avoid MODPOST warnings
[PATCH] i386: Fix memory hotplug related MODPOST generated warning
[PATCH] x86-64: tighten up printks
[PATCH] x86-64: - Ignore long SMI interrupts in clock calibration
[PATCH] x86-64: pci quirks MODPOST warning fix
[PATCH] x86-64: Modpost whitelist reference to more symbols (pattern 3)
[PATCH] x86-64: modpost add more symbols to whitelist pattern2
[PATCH] i386: make apic probe function non-init
[PATCH] i386: cpu hotplug/smpboot misc MODPOST warning fixes
[PATCH] x86-64: Use different constraint for gcc < 4.1 in bitops.h
[PATCH] x86-64: Make noirqdebug_setup function non init to fix modpost warning
[PATCH] i386: Update defconfig
[PATCH] x86-64: Update defconfig
o MODPOST generates warnings for i386 if kernel is compiled with
CONFIG_RELOCATABLE=y
WARNING: vmlinux - Section mismatch: reference to .init.data: from .text between 'asus_hides_smbus_lpc_ich6' (at offset 0xc0217d58) and 'quirk_cardbus_legacy'
WARNING: vmlinux - Section mismatch: reference to .init.data: from .text between 'asus_hides_smbus_lpc' (at offset 0xc0217fd9) and 'pci_match_id'
o Two quirk functions which are non __init, are accessing data which is
of type __init.
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
o MODPOST generates warning for i386 if compiled with CONFIG_RELOCATABLE=y
and serial console support is enabled.
o Serial console setup function, serial8250_console_setup(), is a non __init
function and it calls functions which are of type __init().
(uart_parse_options() and uart_set_options()). Assuming, setup will
be called during init time, changing serial8250_console_setup() to __init.
o Adding one more pattern to modpost whitelist. Console drivers might
have *_console structures containing references to setup functions which
can be of __init type. Don't generate warnings for those.
WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'serial8250_console' (at offset 0xc05a33d8) and 'serial8250_reg'
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Since commit 98e238cd42 in Linux 2.6.19,
"ieee1394: sbp2: don't prefer MODE SENSE 10", some FireWire DVD-ROMs and
DVD-RWs were mistaken as CD-ROM because sr_mod now sent MODE SENSE 6.
The MMC command set includes only MODE SENSE 10.
http://bugzilla.kernel.org/show_bug.cgi?id=7800
This fix lets sbp2 switch scsi_device.use_10_for_rw on for MMC LUs.
This should rather be done in the command set driver sr_mod, not in the
sbp2 transport driver, and an according patch will follow for a next
Linux release.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband:
IB/mthca: Don't execute QUERY_QP firmware command for QP in RESET state
IB/ehca: Use proper GFP_ flags for get_zeroed_page()
IB/mthca: Fix PRM compliance problem in atomic-send completions
RDMA/ucma: Don't report events with invalid user context
RDMA/ucma: Fix struct ucma_event leak when backlog is full
RDMA/iwcm: iWARP connection timeouts shouldn't be reported as rejects
IB/iser: Return error code when PDUs may not be sent
IB/mthca: Fix off-by-one in FMR handling on memfree
If a QP being queried is in the RESET state, don't execute the
QUERY_QP firmware command (because it will fail).
Signed-off-by: Dotan Barak <dotanb@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Here is a patch for ehca to use proper flag, ie. GFP_ATOMIC
resp. GFP_KERNEL, when calling get_zeroed_page() to prevent "Bug:
scheduling while atomic...". This error does not cause a kernel panic
but makes ipoib un-usable afterwards. It is reproducible on
2.6.20-rc4 if one does ifconfig down during a flood ping test. I have
not observed this error in earlier releases incl. 2.6.20-rc1.
This error occurs when a qp event/irq is received and ehca event
handler allocates a control block/page to obtain HCA error data block.
Use of GFP_ATOMIC when in interrupt context prevents this issue.
Signed-off-by Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[TCP]: Fix iov_len calculation in tcp_v4_send_ack().
[NETFILTER]: nf_conntrack_netbios_ns: fix uninitialized member in expectation
[TG3]: Add PHY workaround for 5755M.
[BNX2]: Update version and reldate.
[BNX2]: Fix bug in bnx2_nvram_write().
[BNX2]: Fix 5709 Serdes detection.
[BNX2]: Don't apply CRC PHY workaround to 5709.
NetLabel: correct CIPSO tag handling when adding new DOI definitions
NetLabel: correct locking in selinux_netlbl_socket_setsid()
[Bluetooth] Correct SCO buffer for Broadcom based Dell laptops
[Bluetooth] Correct SCO buffer for Broadcom based HP laptops
[Bluetooth] Correct SCO buffer size for another ThinkPad laptop
[Bluetooth] Handle device registration failures
[Bluetooth] Fix uninitialized return value for RFCOMM sendmsg()
[Bluetooth] More checks if DLC is still attached to the TTY
[Bluetooth] Add packet size checks for CAPI messages
[X25]: Trivial, SOCK_DEBUG's in x25_facilities missing newlines
[INET]: Fix incorrect "inet_sock->is_icsk" assignment.
* 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Fix bugs in the hypervisor call stats code
[POWERPC] Fix corruption in hcall9
[POWERPC] iSeries: fix setup initcall
[POWERPC] iSeries: fix viopath initialisation
[POWERPC] iSeries: fix lpevents initialisation
[POWERPC] iSeries: fix proc/iSeries initialisation
[POWERPC] iSeries: fix mf proc initialisation
[POWERPC] disable PReP and EFIKA during make oldconfig
[POWERPC] Fix mpc52xx serial driver to work for arch/ppc again
[POWERPC] Don't include powerpc/sysdev/rom.o for arch/ppc builds
[POWERPC] Fix mpc52xx fdt to use correct device_type for sound devices
[POWERPC] 52xx: Don't use device_initcall to probe of_platform_bus
[POWERPC] Add legacy iSeries to ppc64_defconfig
[POWERPC] Update ppc64_defconfig
[POWERPC] Fix manual assembly WARN_ON() in enter_rtas().
[POWERPC] Avoid calling get_irq_server() with a real, not virtual irq.
[POWERPC] Fix unbalanced uses of of_node_put
[POWERPC] Fix bogus BUG_ON() in in hugetlb_get_unmapped_area()
Darrick J. Wong