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2008-01-26ide: add ide_init_port_hw() helperBartlomiej Zolnierkiewicz6-66/+81
* Add ide_init_port_hw() helper. * rapide.c: convert rapide_locate_hwif() to rapide_setup_ports() and use ide_init_port_hw(). * ide_platform.c: convert plat_ide_locate_hwif() to plat_ide_setup_ports() and use ide_init_port_hw(). * sgiioc4.c: use ide_init_port_hw(). * pmac.c: add 'hw_regs_t *hw' argument to pmac_ide_setup_device(), setup 'hw' in pmac_ide_{macio,pci}_attach() and use ide_init_port_hw() in pmac_ide_setup_device(). This patch is a preparation for the future changes in the IDE probing code. There should be no functionality changes caused by this patch. Cc: Russell King <rmk@arm.linux.org.uk> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Jeremy Higdon <jeremy@sgi.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26sgiioc4: always init hwif->io_portsBartlomiej Zolnierkiewicz1-9/+6
'if (hwif->io_ports[IDE_DATA_OFFSET] != cmd_base)' is always true. Cc: Jeremy Higdon <jeremy@sgi.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: Fix build break caused by "ide: remove ideprobe_init()"Olof Johansson2-2/+2
Fix build break of powerpc holly_defconfig: In file included from arch/powerpc/platforms/embedded6xx/holly.c:24: include/linux/ide.h:1206: error: 'CONFIG_IDE_MAX_HWIFS' undeclared here (not in a function) There's no need to have a sized array in the prototype, might as well turn it into a pointer. It could probably be argued that large parts of the include file can be covered under #ifdef CONFIG_IDE, but that's a larger undertaking. Signed-off-by: Olof Johansson <olof@lixom.net> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: remove ideprobe_init()Bartlomiej Zolnierkiewicz3-41/+24
* Rename ide_device_add() to ide_device_add_all() and make it accept 'u8 idx[MAX_HWIFS]' instead of 'u8 idx[4]' as an argument. * Add ide_device_add() wrapper for ide_device_add_all(). * Convert ide_generic_init() to use ide_device_add_all(). * Remove no longer needed ideprobe_init(). There should be no functionality changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: add hwif->chipset fixup to ide_device_add()Bartlomiej Zolnierkiewicz1-1/+5
Add hwif->chipset fixup identical to the one in ideprobe_init() to ide_device_add(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26swarm: set hwif->chipsetBartlomiej Zolnierkiewicz1-0/+1
hwif->chipset should be set if the hwif is claimed by host driver. Cc: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26rapide: set hwif->chipsetBartlomiej Zolnierkiewicz1-0/+1
hwif->chipset should be set if the hwif is claimed by host driver. Cc: Russell King <rmk@arm.linux.org.uk> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: fix probing for hosts with serialized or IRQ sharing interfacesBartlomiej Zolnierkiewicz1-2/+14
After hwif_register_devices() IDE devices are ready to be used so the way in which ide_device_add() works currently is racy for hosts with serialized / IRQ sharing interfaces. Fix ide_device_add() by looping over interfaces for probe_hwif(), hwif_init() and hwif_register_devices() operations. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: kill probe_hwif_init()Bartlomiej Zolnierkiewicz1-21/+17
There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: don't try to unregister interfaces if 'initializing' in ide_register_hw()Bartlomiej Zolnierkiewicz1-2/+10
Host drivers using ide_register_hw() and 'initializing == 1': * ide-pnp - depends on ISA * ide_arm - ARM arch specific - initialized before all other host drivers * ide-cris - CRIS arch specific => IDE_ARCH_OBSOLETE_INIT is not defined - broken * ide-h8300 - H8300 arch specific => IDE_ARCH_OBSOLETE_INIT is not defined, no PCI * buddha/q40/gayle/macide/falconide - M68K arch specific => IDE_ARCH_OBSOLETE_INIT is not defined, no PCI Since the only host drivers which probe interfaces before the above ones are: * ali14xx/dtc2278/ht6560b/qd65xx/umc8672 - depend on ISA - require IDE_ARCH_OBSOLETE_INIT=y to work * PCI ones - depend on PCI don't try to unregister interfaces if 'initializing == 1' in ide_register_hw() (it is possible that built-in host drivers will claim all IDE interfaces but later ide-pnp host driver will try to unregister them - this change fixes it). Also skip hwif->hold check if 'initializing == 1' since it is set only by: * pmac - PPC && PMAC specific => no ISA * au1xxx-ide - MIPS && SOC_AU1200 specific => no ISA and use ide_find_port() helper to find free ide_hwifs[] slot. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: merge ->fixup and ->quirkproc methodsBartlomiej Zolnierkiewicz9-68/+57
* Assign drive->quirk_list in ->quirkproc implementations: - hpt366.c::hpt3xx_quirkproc() - pdc202xx_new.c::pdcnew_quirkproc() - pdc202xx_old.c::pdc202xx_quirkproc() * Make ->quirkproc void. * Move calling ->quirkproc from do_identify() to probe_hwif(). * Convert it821x_fixups() to it821x_quirkproc() in it821x.c. * Convert siimage_fixup() to sil_quirkproc() in siimage.c, also remove no longer needed drive->present check from is_dev_seagate_sata(). * Convert ide_undecoded_slave() to accept 'drive' instead of 'hwif' as an argument. Then convert ide_register_hw() to accept 'quirkproc' argument instead of 'fixup' one. * Remove no longer needed ->fixup method. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: dump taskfile HOB registers in ide_tf_load() (if DEBUG is defined)Bartlomiej Zolnierkiewicz2-6/+5
* Dump taskfile HOB registers in ide_tf_load() (if DEBUG is defined). * Remove no longer needed DEBUG code from __ide_do_rw_disk(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: merge ->dma_host_{on,off} methods into ->dma_host_set methodBartlomiej Zolnierkiewicz14-105/+44
Merge ->dma_host_{on,off} methods into ->dma_host_set method which takes 'int on' argument. There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: move drive->using_dma check to callers of ->dma_host_on methodBartlomiej Zolnierkiewicz4-5/+5
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26atiixp: remove ->dma_host_on and ->dma_host_off methodsBartlomiej Zolnierkiewicz1-53/+18
* Enable/disable UDMA in atiixp_set_dma_mode(). * Remove no longer needed atiixp_dma_host_{on,off}() and save_mdma_mode[]. * Bump driver version. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide-cris: fix DMA methodsBartlomiej Zolnierkiewicz1-11/+7
* Rename cris_dma_{on,off}() to cris_dma_host_{on,off}(). * Remove no longer needed ->dma_off_quietly (IDE core has the needed code now). * Make cris_dma_host_on() void. I left fixing ide-cris after "kill dma_on/dma_off_quietly() methods" patch because: * Currently this driver is broken: cris_dma_on() (returns 'int') is assigned to hwif->dma_host_on (returns 'void') so the driver won't build. * ->ide_dma_on method was missing so the driver OOPS-es on attempt to enable DMA. * drive->using_dma was never set/cleared so DMA wouldn't be used anyway. Unfortunately it seems that ide-cris stays broken even after this patch: * V10: <asm/arch-v10/ide.h> needs fixing - ide_init_default_hwifs() should be removed (IDE core no longer uses it) - same for ide_init_hwif_ports() and ide_default_{irq,io_base}() (they shouldn't be needed for ide-cris host driver) * V32: I'm unable to find a place which defines ETRAX_ARCH_V32 but I'm leaving fixing this to CRIS gurus. :) Cc: Mikael Starvik <starvik@axis.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: remove ->ide_dma_on and ->dma_off_quietly methods from ide_hwif_tBartlomiej Zolnierkiewicz11-86/+28
* Make ide_dma_off_quietly() and __ide_dma_on() always available. * Drop "__" prefix from __ide_dma_on(). * Check for presence of ->dma_host_on instead of ->ide_dma_on. * Convert all users of ->ide_dma_on and ->dma_off_quietly methods to use ide_dma_on() and ide_dma_off_quietly() instead. * Remove no longer needed ->ide_dma_on and ->dma_off_quietly methods from ide_hwif_t. * Make ide_dma_on() void. There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26au1xxx-ide: add ide_toggle_bounce() callsBartlomiej Zolnierkiewicz1-0/+2
Add ide_toggle_bounce() call to ->ide_dma_on/->dma_off_quietly methods so they match generic __ide_dma_on()/ide_dma_off_quietly(). Since there is no PCI device there should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26icside: add ide_toggle_bounce() callsBartlomiej Zolnierkiewicz1-0/+2
Add ide_toggle_bounce() call to ->ide_dma_on/->dma_off_quietly methods so they match generic __ide_dma_on()/ide_dma_off_quietly(). Since there is no PCI device there should be no functionality changes caused by this patch. Cc: Russell King <rmk@arm.linux.org.uk> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26sgiioc4: add ide_toggle_bounce() callsBartlomiej Zolnierkiewicz1-0/+2
Add ide_toggle_bounce() call to ->ide_dma_on/->dma_off_quietly methods so they match generic __ide_dma_on()/ide_dma_off_quietly(). Tested on Altix by Jeremy. Acked-by: Jeremy Higdon <jeremy@sgi.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26cy82c693: add ->set_dma_mode methodBartlomiej Zolnierkiewicz3-57/+24
* Fix SWDMA/MWDMA masks in cy82c693_chipset. * Add IDE_HFLAG_CY82C693 host flag and use it in ide_tune_dma() to check whether the DMA should be enabled even if ide_max_dma_mode() fails. * Convert cy82c693_dma_enable() to become cy82c693_set_dma_mode() and remove no longer needed cy82c693_ide_dma_on(). Then set IDE_HFLAG_CY82C693 instead of IDE_HFLAG_TRUST_BIOS_FOR_DMA in cy82c693_chipset. * Bump driver version. As a result of this patch cy82c693 driver will configure and use DMA on all SWDMA0-2 and MWDMA0-2 capable ATA devices instead of relying on BIOS. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26cy82c693: correct DMA modes clippingBartlomiej Zolnierkiewicz1-6/+6
* Mask device DMA masks by ATA_{S,M}WDMA2 in cy82c693_ide_dma_on(). * Remove clipping of DMA modes by id->tDMA in cy82c693_dma_enable(): - id->tDMA may not be defined on newer devices - id->vendor6/id->tDMA word is in LE endianness (cy82c693 seems to be Alpha specific though) * Bump driver version. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide: (hopefully) fix VDMA for CS5520Bartlomiej Zolnierkiewicz3-16/+25
* Set the correct hwif->dma_base for the second channel in ide_get_or_set_dma_base(). * Remove DMA enable code from cs5520_set_pio_mode(), this can be handled by the generic ->dma_host_on method now. * Add VDMA check to ide_config_drive_speed(). * drive->using_dma was never enabled since cs5520 host driver's ->ide_dma_on method overrided the generic ->ide_dma_on (so __ide_dma_on() was never called, drive->using_dma was never set and VDMA was never used since it depends on drive->using_dma). Fix it by using ->dma_host_on method instead of ->ide_dma_on (also add matching ->dma_host_off method). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26ide-disk: add idedisk_set_doorlock() helperBartlomiej Zolnierkiewicz1-10/+13
There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26serverworks: cleanup ->set_dma_mode methodBartlomiej Zolnierkiewicz1-19/+6
IDE core guarantees that ->set_dma_mode will be called only for DMA modes set in SWDMA/MWDMA/UDMA masks. There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26sl82c105: remove no longer needed ->selectproc methodBartlomiej Zolnierkiewicz1-31/+3
* Program register 0x40 in sl82c105_resetproc(). * Remove no longer needed sl82c105_selectproc() and pci_set_drvdata() calls. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26sl82c105: program DMA/PIO timings in ->dma_start/->ide_dma_endBartlomiej Zolnierkiewicz1-40/+15
* Program DMA timings in sl82c105_dma_start() (->dma_start method) before starting DMA transfer. * Add sl82c105_dma_end() (->ide_dma_end method) to switch back to PIO timings when DMA transfer is complete. * In sl82c105_set_pio_mode() program timings regardless of ->using_dma setting and in sl82c105_set_dma_mode() only cache the new timings. * Remove no longer needed sl82c105_{ide_dma_on,off_quietly}(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-26[S390] replace lock_cpu_hotplug with get_online_cpusMartin Schwidefsky1-6/+6
Git commit 86ef5c9a8edd78e6bf92879f32329d89b2d55b5a forgot a few lock_cpu_hotplug/unlock_cpu_hotplug pairs in arch/s390/kernel/smp.c Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] usage of s390dbf: shrink number of debug areas to use.Peter Tiedemann2-5/+5
Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
2008-01-26[S390] constify function pointer tables.Jan Engelhardt8-9/+9
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] do local_irq_restore while spinning in spin_lock_irqsave.Hisashi Hifumi2-1/+35
In s390's spin_lock_irqsave, interrupts remain disabled while spinning. In other architectures like x86 and powerpc, interrupts are re-enabled while spinning if IRQ is not masked before spin_lock_irqsave is called. The following patch re-enables interrupts through local_irq_restore while spinning for a lock acquisition. This can improve system response. [heiko.carstens@de.ibm.com: removed saving of pc] Signed-off-by: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] add smp_call_function_maskCarsten Otte2-0/+29
This patch adds the s390 variant for smp_call_function_mask(). The implementation is pretty straight forward using the wrapper __smp_call_function_map() which already takes a cpumask_t argument. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] dasd: fix loop in request expiration handlingStefan Haberland1-1/+2
Add time to the 'expires' value to avoid a loop caused by the cqr termination function Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] Unused field / extern declaration in processor.hMartin Schwidefsky1-4/+0
Remove extern declaration of non-existent last_task_used_math and remove unused field error_code from the thread_struct. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] Remove TOPDIR from MakefileWANG Cong1-4/+0
This patch removes TOPDIR from arch/s390/kernel/Makefile. Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] dasd: add hyper PAV support to DASD device driver, part 1Stefan Weinhuber18-1720/+3117
Parallel access volumes (PAV) is a storage server feature, that allows to start multiple channel programs on the same DASD in parallel. It defines alias devices which can be used as alternative paths to the same disk. With the old base PAV support we only needed rudimentary functionality in the DASD device driver. As the mapping between base and alias devices was static, we just had to export an identifier (uid) and could leave the combining of devices to external layers like a device mapper multipath. Now hyper PAV removes the requirement to dedicate alias devices to specific base devices. Instead each alias devices can be combined with multiple base device on a per request basis. This requires full support by the DASD device driver as now each channel program itself has to identify the target base device. The changes to the dasd device driver and the ECKD discipline are: - Separate subchannel device representation (dasd_device) from block device representation (dasd_block). Only base devices are block devices. - Gather information about base and alias devices and possible combinations. - For each request decide which dasd_device should be used (base or alias) and build specific channel program. - Support summary unit checks, which allow the storage server to upgrade / downgrade between base and hyper PAV at runtime (support is mandatory). Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] single-step cleanupRoland McGrath3-16/+27
Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] Move NOTES and BUG_TABLE.Martin Schwidefsky1-3/+9
Move the NOTES and BUG_TABLE section in the linker script to the read-only sections right after the text section. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] drivers/s390/: Spelling fixesJoe Perches6-6/+6
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] include/asm-s390/: Spelling fixesJoe Perches4-5/+5
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] arch/s390/: Spelling fixesJoe Perches1-1/+1
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] Use diag308 subcodes 3 and 6 for reboot and dump when possible.Michael Holzheu2-6/+12
This patch fixes a problem with the following scenario: 1. Linux booted from DASD "A" 2. Reboot from DASD "B" using "/sys/firmware/reipl/ccw/device" 3. Reboot DASD "B" Without this patch in step 3 on newer s390 systems under LPAR instead of DASD "B", DASD "A" will be booted. The reason is that in step 2 we use CCW reipl and in step 3 we use DIAG308 (subcode 3) reipl. DIAG308 does not notice the CCW reipl and still thinks that it has to reboot DASD "A". Before applying this fix, ensure to have MCF RJ9967101E or z9 GA3 base driver installed. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] vmemmap: allocate struct pages before 1:1 mappingChristian Borntraeger1-2/+2
We have seen an oops in an OOM situation, where show_mem tried to access the struct page of a dcss segment. The vmemmap code has already created the 1:1 mapping but failed allocating the struct pages. In the OOM case, show_mem now walks the memory. It uses pfn_valid to detect if it may access the struct page. In the case described above, the mapping was established and pfn_valid returned true. As the struct pages were not allocated, the kernel oopsed. We have to ensure that we have created the struct pages, before we add a mapping pointing to the pages. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] Initialize sclp_ipl_infoMichael Holzheu1-0/+1
The sclp ipl information has not been initialized. Therefore the ipl loadparm and the "has_dump" flag have not been set correctly. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] Allocate and free cpu lowcores and stacks when needed/possible.Heiko Carstens1-34/+72
No need to preallocate the per cpu lowcores and stacks. Savings are 28-32k per offline cpu. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] use LIST_HEAD instead of LIST_HEAD_INITDenis Cheng6-8/+7
single list_head variable initialized with LIST_HEAD_INIT could almost always can be replaced with LIST_HEAD declaration, this shrinks the code and looks better. Signed-off-by: Denis Cheng <crquan@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] Load disabled wait psw instead of stopping cpu on halt.Michael Holzheu1-2/+6
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] kernel: Shutdown Actions InterfaceMichael Holzheu4-462/+603
In case of a kernel panic it is currently possible to specify that a dump should be created, the system should be rebooted or stopped. Virtual sysfs files under the directory /sys/firmware/ are used for that configuration. In addition to that, there are kernel parameters 'vmhalt', 'vmpoff' and 'vmpanic', which can be used to specify z/VM commands, which are automatically executed in case of halt, power off or a kernel panic. This patch combines both functionalities and allows to specify the z/VM CP commands also via sysfs attributes. In addition to that, it enhances the existing handling of shutdown triggers (e.g. halt or panic) and associated shutdown actions (e.g. dump or reipl) and makes it more flexible. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] drivers/s390: Add missing "space"Joe Perches6-10/+10
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-01-26[S390] arch/s390: Add missing "space"Joe Perches1-1/+1
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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