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* [SCSI] qla2xxx: make some more functions staticAdrian Bunk2006-06-303-10/+7
| | | | | | | | | Make some needlessly global functions static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] small whitespace cleanup for qlogic driverJesper Juhl2006-06-301-2/+2
| | | | | | | | | | Add a few spaces to MODULE_PARM_DESC() text for qla2xxx. Without these spaces text runs together when modinfo prints the text. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] sg.c: Fix bad error handling inIshai Rabinovitz2006-06-301-1/+9
| | | | | | | | | | | | | I got a NULL derefrence in cdev_del+1 when called from sg_remove. By looking at the code of sg_add, sg_alloc and sg_remove (all in drivers/scsi/sg.c) I found out that sg_add is calling sg_alloc but if it fails afterwards it does not deallocate the space that was allocated in sg_alloc and the redundant entry has NULL in cdev. When sg_remove is being called, it tries to perform cdev_del to this NULL cdev and fails. Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] 53c700: fix breakage caused by the autosense updateJames Bottomley2006-06-292-37/+53
| | | | | | | | A bit of a brown paper bag issue. The previous patch to remove the soon to be ripped out fields that were used in autosense actually broke the driver. This patch fixes it and has been tested (honestly). Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] iscsi: add async notification of session eventsMike Christie2006-06-291-82/+227
| | | | | | | | | | | | | | This patch adds or modifies the transport class functions used to notify userspace of session state events. We modify the session addition up event and add a destruction event to notify userspace of session creation, relogin and destruction. And we modify the conn error event to be sent by broadcast since multiple listeners may want to listen for it. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] iscsi: pass target nr to session creationMike Christie2006-06-292-8/+8
| | | | | | | | | | | | | | | | So the drivers do not use the channel numbers, but some do use the target numbers. We were just adding some goofy variable that just increases for the target nr. This is useless for software iscsi because it is always zero. And for qla4xxx the target nr is actually the index of the target/session in its FW or FLASH tables. We needed to expose this to userspace so apps could access those numbers so this patch just adds the target nr to the iscsi session creation functions. This way when qla4xxx's Hw thinks a session is at target nr 4 in its hw, it is exposed as that number in sysfs. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] iscsi: break up session creation into two stagesMike Christie2006-06-291-29/+68
| | | | | | | | | | | | | | | | | | | | | | qla4xxx is initialized in two steps like other HW drivers. It allocates the host, sets up the HW, then adds the host. For iscsi part of HW setup is setting up persistent iscsi sessions. At that time, the interupts are off and the driver is not completely set up so we just want to allocate them. We do not want to add them to sysfs and expose them to userspace because userspace could try to do lots of fun things with them like scanning and at that time the driver is not ready. So this patch breakes up the session creation like other functions that use the driver model in two the alloc and add parts. When the driver is ready, it can then add the sessions and userspace can begin using them. This also fixes a bug in the addition error patch where we forgot to do a get on the session. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] iscsi: rm channel usage from iscsiMike Christie2006-06-292-6/+4
| | | | | | | | | | | | I do not remember what I was thinking when we added the channel as a argument to the session create function. It was probably due to too much cut and paste work from the FC transport class. The channel is meaningless for iscsi drivers so this patch drops its usage everywhere in the iscsi related code. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] iscsi: fix session refcoutingMike Christie2006-06-292-9/+9
| | | | | | | | | | | | | | | | iscsi_tcp and iser cannot be rmmod from the kernel when sessions are running because session removal is driven from userspace. For those modules we get a module reference when a session is created then drop it when the session is removed. For qla4xxx, they can jsut remove the sessions from the pci remove function like normal HW drivers, so this patch moves the module reference from the transport class functions shared by all drivers to the libiscsi functions only used be software iscsi modules. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] iscsi: convert iscsi_tcp to new set/get param fnsMike Christie2006-06-291-128/+24
| | | | | | | Convert iscsi_tcp to new lib functions. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] iscsi: fixup set/get param functionsMike Christie2006-06-292-166/+223
| | | | | | | | | | | | | | Reduce duplication in the software iscsi_transport modules by adding a libiscsi function to handle the common grunt work. This also has the drivers return specifc -EXXX values for different errors so userspace can finally handle them in a sane way. Also just pass the sysfs buffers to the drivers so HW iscsi can get/set its string values, like targetname, and initiatorname. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] iscsi: add target discvery event to transport classMike Christie2006-06-291-0/+18
| | | | | | | | | | | | | Patch from david.somayajulu@qlogic.com: Add target discovery event. We may have a setup where the iscsi traffic is on a different netowrk than the other network traffic. In this case we will want to do discovery though the iscsi card. This patch adds a event to the transport class that can be used by hw iscsi cards that support this. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] st: remove unused st_buffer.in_useMartin Habets2006-06-292-2/+0
| | | | | | | | | | I noticed that in_use in st_buffer is not used. The patch below against 2.6.17-rc3 removes it, assuming there is no future use for it. It was tested in a sparc SS20 with a DLT4000. Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk> Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Merge ../linux-2.6/James Bottomley2006-06-2826-137/+191
|\ | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/scsi/aacraid/comminit.c Fixed up by removing the now renamed CONFIG_IOMMU option from aacraid Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * Merge branch 'upstream-linus' of ā†µLinus Torvalds2006-06-2713-107/+170
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: [PATCH] ata_piix: add ICH6/7/8 to Kconfig [PATCH] sata_sil: disable hotplug interrupts on two ATI IXPs [PATCH] libata: cosmetic updates [PATCH] ata: add some NVIDIA chipset IDs [PATCH] libata reduce timeouts [PATCH] libata: implement ata_port_max_devices() [PATCH] libata: make two functions global [PATCH] libata: update ata_do_simple_cmd() [PATCH] libata: move ata_do_simple_cmd() below ata_exec_internal() [PATCH] libata: clear EH action on device detach [PATCH] libata: implement and use ata_deh_dev_action() [PATCH] libata: move ata_eh_clear_action() upward [PATCH] libata.h needs scatterlist.h [libata] sata_vsc: partially revert a PCI ID-related commit [libata] Bump versions
| | * [PATCH] ata_piix: add ICH6/7/8 to KconfigAuke Kok2006-06-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ata_piix's Kconfig entry still refers only to ICH5, while it supports ICH6 through 8. This creates confusion with people who are looking to see if their newer SATA enabled motherboards are supported. The following patch makes this clear. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [PATCH] sata_sil: disable hotplug interrupts on two ATI IXPsTejun Heo2006-06-261-6/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some SATA controllers embedded in ATI IXPs seem to have broken SATA_IRQ bit in their bmdma2 registers which is always stuck at 1. This makes the driver believe that there has been a hotplug event and freeze the port whenever there's an interrupt thus failing all commands. This patch disables SATA_IRQ for those controllers. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [PATCH] libata: cosmetic updatesTejun Heo2006-06-261-29/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cosmetic updates in libata-core.c. * trim trailing whitespaces * break lines which are over 80 column * kill unnecessary braces * make indentation consistent Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [PATCH] libata reduce timeoutsAndrew Morton2006-06-261-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Andrew Morton <akpm@osdl.org> Provide a module parameter to override the default 30-second-per-device SATA probing timeout. Cc: Tejun Heo <htejun@gmail.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [PATCH] libata: make two functions globalTejun Heo2006-06-262-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | Make ata_do_simple_cmd() and ata_flush_cache() global. These will be used from libata-eh.c. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [PATCH] libata: update ata_do_simple_cmd()Tejun Heo2006-06-261-14/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * the function has always returned AC_ERR_* masks not -errno but its return type was int. Make return type unsigned int. * don't print error message automatically. it's the caller's responsibility. * add header comment Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [PATCH] libata: move ata_do_simple_cmd() below ata_exec_internal()Tejun Heo2006-06-261-23/+23
| | | | | | | | | | | | | | | | | | | | | Move ata_do_simple_cmd() below ata_exec_internal() for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [PATCH] libata: clear EH action on device detachTejun Heo2006-06-261-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | Clear related EH action on device detach such that new device doesn't receive EH actions scheduled for the old one. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [PATCH] libata: implement and use ata_deh_dev_action()Tejun Heo2006-06-261-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | Implement and use ata_eh_dev_action() which returns EH action mask for a device. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [PATCH] libata: move ata_eh_clear_action() upwardTejun Heo2006-06-261-25/+25
| | | | | | | | | | | | | | | | | | | | | Move ata_eh_clear_action() upward. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [libata] sata_vsc: partially revert a PCI ID-related commitJeff Garzik2006-06-261-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Partially revert 74d0a988d3aa359b6b8a8536c8cb92cce02ca5d5: [PATCH] PCI: Move various PCI IDs to header file libata policy is to avoid use of named PCI device ID constants. These are often single-use constants, which have little value over direct numeric constants save for constant include/linux/pci_ids.h patching/merging headaches. Signed-off-by: Jeff Garzik <jeff@garzik.org>
| | * [libata] Bump versionsJeff Garzik2006-06-2610-10/+10
| | | | | | | | | | | | | | | | | | Update major version for libata, and several drivers. Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | [PATCH] Remove redundant NULL checks before [kv]free - in drivers/Jesper Juhl2006-06-271-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove redundant NULL chck before kfree + tiny CodingStyle cleanup for drivers/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] spin/rwlock init cleanupsIngo Molnar2006-06-271-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | locking init cleanups: - convert " = SPIN_LOCK_UNLOCKED" to spin_lock_init() or DEFINE_SPINLOCK() - convert rwlocks in a similar manner this patch was generated automatically. Motivation: - cleanliness - lockdep needs control of lock initialization, which the open-coded variants do not give - it's also useful for -rt and for lock debugging in general Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds2006-06-2610-17/+12
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: typo fixes Clean up 'inline is not at beginning' warnings for usb storage Storage class should be first i386: Trivial typo fixes ixj: make ixj_set_tone_off() static spelling fixes fix paniced->panicked typos Spelling fixes for Documentation/atomic_ops.txt move acknowledgment for Mark Adler to CREDITS remove the bouncing email address of David Campbell
| | * spelling fixesAndreas Mohr2006-06-266-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | acquired (aquired) contiguous (contigious) successful (succesful, succesfull) surprise (suprise) whether (weather) some other misspellings Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
| | * remove the bouncing email address of David CampbellAdrian Bunk2006-06-264-7/+2
| | | | | | | | | | | | | | | | | | This patch removes a bouncing email address from the kernel sources. Signed-off-by: Adrian Bunk <bunk@stusta.de>
| * | Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds2006-06-261-5/+5
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (40 commits) kbuild: trivial fixes in Makefile kbuild: adding symbols in Kconfig and defconfig to TAGS kbuild: replace abort() with exit(1) kbuild: support for %.symtypes files kbuild: fix silentoldconfig recursion kbuild: add option for stripping modules while installing them kbuild: kill some false positives from modpost kbuild: export-symbol usage report generator kbuild: fix make -rR breakage kbuild: append -dirty for updated but uncommited changes kbuild: append git revision for all untagged commits kbuild: fix module.symvers parsing in modpost kbuild: ignore make's built-in rules & variables kbuild: bugfix with initramfs kbuild: modpost build fix kbuild: check license compatibility when building modules kbuild: export-type enhancement to modpost.c kbuild: add dependency on kernel.release to the package targets kbuild: `make kernelrelease' speedup kconfig: KCONFIG_OVERWRITECONFIG ...
| | * | kconfig: remove leading whitespace in menu promptsRoman Zippel2006-06-091-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This removes all the leading whitespace kconfig now warns about. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| * | | Merge branch 'x86-64'Linus Torvalds2006-06-261-1/+4
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * x86-64: (83 commits) [PATCH] x86_64: x86_64 stack usage debugging [PATCH] x86_64: (resend) x86_64 stack overflow debugging [PATCH] x86_64: msi_apic.c build fix [PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs [PATCH] x86_64: Avoid broadcasting NMI IPIs [PATCH] x86_64: fix apic error on bootup [PATCH] x86_64: enlarge window for stack growth [PATCH] x86_64: Minor string functions optimizations [PATCH] x86_64: Move export symbols to their C functions [PATCH] x86_64: Standardize i386/x86_64 handling of NMI_VECTOR [PATCH] x86_64: Fix modular pc speaker [PATCH] x86_64: remove sys32_ni_syscall() [PATCH] x86_64: Do not use -ffunction-sections for modules [PATCH] x86_64: Add cpu_relax to apic_wait_icr_idle [PATCH] x86_64: adjust kstack_depth_to_print default [PATCH] i386/x86-64: adjust /proc/interrupts column headings [PATCH] x86_64: Fix race in cpu_local_* on preemptible kernels [PATCH] x86_64: Fix fast check in safe_smp_processor_id [PATCH] x86_64: x86_64 setup.c - printing cmp related boottime information [PATCH] i386/x86-64/ia64: Move polling flag into thread_info_status ... Manual resolve of trivial conflict in arch/i386/kernel/Makefile
| | * | | [PATCH] x86_64: Rename IOMMU option, fix help and mark option embedded.Andi Kleen2006-06-261-1/+4
| | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Rename the GART_IOMMU option to IOMMU to make clear it's not just for AMD - Rewrite the help text to better emphatise this fact - Make it an embedded option because too many people get it wrong. To my astonishment I discovered the aacraid driver tests this symbol directly. This looks quite broken to me - it's an internal implementation detail of the PCI DMA API. Can the maintainer please clarify what this test was intended to do? Cc: linux-scsi@vger.kernel.org Cc: alan@redhat.com Cc: markh@osdl.org Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * / | [PATCH] drivers: use list_move()Akinobu Mita2006-06-262-4/+2
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts the combination of list_del(A) and list_add(A, B) to list_move(A, B) under drivers/. Acked-by: Corey Minyard <minyard@mvista.com> Cc: Ben Collins <bcollins@debian.org> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Alasdair Kergon <dm-devel@redhat.com> Cc: Gerd Knorr <kraxel@bytesex.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Frank Pavlic <fpavlic@de.ibm.com> Acked-by: Matthew Wilcox <matthew@wil.cx> Cc: Andrew Vasquez <linux-driver@qlogic.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Greg Kroah-Hartman <greg@kroah.com> Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [SCSI] atp870u: reduce huge stack usageRandy Dunlap2006-06-281-74/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The atp870u driver is the largest stack eater reported by checkstack (on x86_864, allmodconfig). This converts the offending function to kmalloc+kfree struct atp_unit instead of allocating it on the stack. Was: 0x0000164c atp870u_probe [atp870u]: 3176 Now: 0x0000164c atp870u_probe [atp870u]: 408 Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] scsi_transport_sas: introduce a sas_port entityJames Bottomley2006-06-282-41/+340
| | | | | | | | | | | | | | | | | | | | | this patch introduces a port object, separates out ports and phys, with ports becoming the primary objects of the tree. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] scsi: Device scanning oops for offlined devices (resend)Brian King2006-06-282-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a device gets offlined as a result of the Inquiry sent during scanning, the following oops can occur. After the disk gets put into the SDEV_OFFLINE state, the error handler sends back the failed inquiry, which wakes the thread doing the scan. This starts a race between the scanning thread freeing the scsi device and the error handler calling scsi_run_host_queues to restart the host. Since the disk is in the SDEV_OFFLINE state, scsi_device_get will still work, which results in __scsi_iterate_devices getting a reference to the scsi disk when it shouldn't. The following execution thread causes the oops: CPU 0 (scan) CPU 1 (eh) --------------------------------------------------------- scsi_probe_and_add_lun .... scsi_eh_offline_sdevs scsi_eh_flush_done_q scsi_destroy_sdev scsi_device_dev_release scsi_restart_operations scsi_run_host_queues __scsi_iterate_devices get_device scsi_device_dev_release_usercontext scsi_run_queue <---OOPS---> The patch fixes this by changing the state of the sdev to SDEV_DEL before doing the final put_device, which should prevent the race from occurring. Original oops follows: Badness in kref_get at lib/kref.c:32 Call Trace: [C00000002F4476D0] [C00000000000EE20] .show_stack+0x68/0x1b0 (unreliable) [C00000002F447770] [C00000000037515C] .program_check_exception+0x1cc/0x5a8 [C00000002F447840] [C00000000000446C] program_check_common+0xec/0x100 Exception: 700 at .kref_get+0x10/0x28 LR = .kobject_get+0x20/0x3c [C00000002F447B30] [C00000002F447BC0] 0xc00000002f447bc0 (unreliable) [C00000002F447BB0] [C000000000254BDC] .get_device+0x20/0x3c [C00000002F447C30] [D000000000063188] .scsi_device_get+0x34/0xdc [scsi_mod] [C00000002F447CC0] [D0000000000633EC] .__scsi_iterate_devices+0x50/0xbc [scsi_mod] [C00000002F447D60] [D00000000006A910] .scsi_run_host_queues+0x34/0x5c [scsi_mod] [C00000002F447DF0] [D000000000069054] .scsi_error_handler+0xdb4/0xe44 [scsi_mod] [C00000002F447EE0] [C00000000007B4E0] .kthread+0x128/0x178 [C00000002F447F90] [C000000000025E84] .kernel_thread+0x4c/0x68 Unable to handle kernel paging request for <7>PCI: Enabling device: (0002:41:01.1), cmd 143 data at address 0x000001b8 Faulting instruction address: 0xd0000000000698e4 sym1: <1010-66> rev 0x1 at pci 0002:41:01.1 irq 216 sym1: No NVRAM, ID 7, Fast-80, LVD, parity checking sym1: SCSI BUS has been reset. scsi2 : sym-2.2.2 cpu 0x0: Vector: 300 (Data Access) at [c00000002f447a30] pc: d0000000000698e4: .scsi_run_queue+0x2c/0x218 [scsi_mod] lr: d00000000006a904: .scsi_run_host_queues+0x28/0x5c [scsi_mod] sp: c00000002f447cb0 msr: 9000000000009032 dar: 1b8 dsisr: 40000000 current = 0xc0000000045fecd0 paca = 0xc00000000048ee80 pid = 1123, comm = scsi_eh_1 enter ? for help [c00000002f447d60] d00000000006a904 .scsi_run_host_queues+0x28/0x5c [scsi_mod] [c00000002f447df0] d000000000069054 .scsi_error_handler+0xdb4/0xe44 [scsi_mod] [c00000002f447ee0] c00000000007b4e0 .kthread+0x128/0x178 [c00000002f447f90] c000000000025e84 .kernel_thread+0x4c/0x68 Signed-off-by: Brian King <brking@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] scsi: Add allow_restart sysfs class attributeBrian King2006-06-281-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a resend of a patch I generated in response to an email sent by Ruben Faelens <parasietje@gmail.com>. His original email to linux-scsi requested a method in which he could spin down a scsi disk when not in use and have the kernel automatically spin it back up when an I/O was generated to the disk. The infrastructure to automatically spin a disk up has been in the scsi error handler for some time now, but it is not enabled by default. This patch adds an sd sysfs attribute which allows userspace to enable this behavior. Signed-off-by: Brian King <brking@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] fc transport: bug fix: correct referencesJames Smart2006-06-271-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Original post was incorrect as it didn't realize that we already had a self-referenc due to device_initialize(), and we were really only missing the put on our own reference. This was hidden by the other bug which had the midlayer reusing stargets after they were already free, which was doing too many puts on our rport. Updating FC transport for: - Add put in fc_rport_final_delete(), to release the rport. Prior, we were leaving the rport with a reference, thus the shost with references, etc. If the driver was unloaded, shosts and rports remained, along with work threads, etc - Fix fc_rport_create failure path - too many put's on parent - Add commenting to easily track ref taking. Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] update max sdev block limitJames Smart2006-06-272-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Updated patch to address comments from Pat Mansfield and Michael Reed: Bumped max to 600 (10mins). Set default dev_loss_tmo to a value other than the max (30s). Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] fc transport: resolve scan vs delete deadlocksJames Smart2006-06-271-13/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In a prior posting to linux-scsi on the fc transport and workq deadlocks, we noted a second error that did not have a patch: http://marc.theaimsgroup.com/?l=linux-scsi&m=114467847711383&w=2 - There's a deadlock where scsi_remove_target() has to sit behind scsi_scan_target() due to contention over the scan_lock(). Subsequently we posted a request for comments about the deadlock: http://marc.theaimsgroup.com/?l=linux-scsi&m=114469358829500&w=2 This posting resolves the second error. Here's what we now understand, and are implementing: If the lldd deletes the rport while a scan is active, the sdev's queue is blocked which stops the issuing of commands associated with the scan. At this point, the scan stalls, and does so with the shost->scan_mutex held. If, at this point, if any scan or delete request is made on the host, it will stall waiting for the scan_mutex. For the FC transport, we queue all delete work to a single workq. So, things worked fine when competing with the scan, as long as the target blocking the scan was the same target at the top of our delete workq, as the delete workq routine always unblocked just prior to requesting the delete. Unfortunately, if the top of our delete workq was for a different target, we deadlock. Additionally, if the target blocking scan returned, we were unblocking it in the scan workq routine, which really won't execute until the existing stalled scan workq completes (e.g. we're re-scheduling it while it is in the midst of its execution). This patch moves the unblock out of the workq routines and moves it to the context that is scheduling the work. This ensures that at some point, we will unblock the target that is blocking scan. Please note, however, that the deadlock condition may still occur while it waits for the transport to timeout an unblock on a target. Worst case, this is bounded by the transport dev_loss_tmo (default: 30 seconds). Finally, Michael Reed deserves the credit for the bulk of this patch, analysis, and it's testing. Thank you for your help. Note: The request for comments statements about the gross-ness of the scan_mutex still stand. Signed-off-by: Michael Reed <mdr@sgi.com> Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] Block I/O while SG reset operation in progress - lpfc portionJames Smart2006-06-273-22/+0
| | | | | | | | | | | | | | | | | | | | | | | | This removes the duplicate functionality which had been added to the lpfc driver. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] Block I/O while SG reset operation in progress - the midlayer patchJames Smart2006-06-271-0/+22
| | | | | | | | | | | | | | | | | | | | | The scsi midlayer portion of the patch Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] aacraid: remove x86_64 IOMMU dependent codeSalyzyn, Mark2006-06-261-22/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This may seem like a DILLIGAF, but after chatting with the F/W folks, there is no harm in dropping the page calculation as denoted in the enclosed patch for these older adapters in this new age of 4GB+ memory sticks. Any resource optimization within the old-old-old adapters for systems with less than 4G of memory is of little consequence. The existing AAC_QUIRK_31BIT flag in linit.c should look after the rest of the legacy hardware DMA limitations. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] random: remove redundant SA_SAMPLE_RANDOM from NinjaSCSIMatt Mackall2006-06-262-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | The scsi layer is already calling add_disk_randomness in scsi_end_request. Signed-off-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] Bogus disk geometry on large disksAlan Cox2006-06-261-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We currently stuff a truncated size into the geometry logic and return the result which can produce bizarre reports for a 4Tb array. Since that mapping logic isn't useful for disks that big don't try and map this way at all. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | | [SCSI] Add scsi_add_host() failure handling for nsp32GOTO Masanori2006-06-261-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add scsi_add_host() failure handling for nsp32 and silence warning. drivers/scsi/nsp32.c:2888: warning: ignoring return value of 'Scsi_add_host', declared with attribute warn_unused_result Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: GOTO Masanori <gotom@sanori.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-01 00:36:34 +0000