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2008-06-25PCIE: port driver: use dev_printk when possibleBjorn Helgaas
Convert printks to use dev_printk(). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-25PCIE: aer: use dev_printk when possibleBjorn Helgaas
Convert printks to use dev_printk(). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-25PCI: use dev_printk when possibleBjorn Helgaas
Convert printks to use dev_printk(). I converted pr_debug() to dev_dbg(). Both use KERN_DEBUG and are enabled only when DEBUG is defined. I converted printk(KERN_DEBUG) to dev_printk(KERN_DEBUG), not to dev_dbg(), because dev_dbg() is only enabled when DEBUG is defined. I converted DBG(KERN_INFO) (only in setup-bus.c) to dev_info(). The DBG() name makes it sound like debug, but it's been enabled forever, so dev_info() preserves the previous behavior. I tried to make the resource assignment formats more consistent, e.g., "BAR %d: got res [%#llx-%#llx] bus [%#llx-%#llx] flags %#lx\n" instead of sometimes using "start-end" and sometimes using "size@start". I'm not attached to one or the other; I'd just like them consistent. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-25Remove unnecessary 'tmp' variable from pci_hp_register().Kenji Kaneshige
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-25pciehp: remove inline from command related functionsKenji Kaneshige
The pcie_poll_cmd() and pcie_wait_cmd() are too large to be inlined. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-25pciehp: change command polling frequencyKenji Kaneshige
Change command polling frequency to 100Hz from 10Hz in order to reduce the delay in the common case of a command completing quickly. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-25pciehp: cleanup pcie_poll_cmdKenji Kaneshige
Cleanup pcie_poll_cmd(): check the slot status once before entering our completion test loop and convert the loop to a simpler while() block. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-25pciehp: fix typo in hpc_release_ctlrKenji Kaneshige
Fix the typo in hpc_release_ctlr(). Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-25PCI: fixup kdoc blocks for hotplug functionsJesse Barnes
A few warnings snuck in as parameters were added or renamed. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-16x86/PCI: fixup early quirk probingJesse Barnes
On x86, we do early PCI probing to apply some quirks for chipset bugs. However, in a recent cleanup (7bcbc78dea92fdf0947fa48e248da3c993a5690f) a thinko was introduced that causes us to probe all subfunctions of even single function devices (a function was factored out of an inner loop and a "break" became a "return"). Fix that up by making check_dev_quirk() return a value so we can keep the factored code intact. Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-12Suspend-related patches for 2.6.27Rafael J. Wysocki
ACPI PM: Add possibility to change suspend sequence There are some systems out there that don't work correctly with our current suspend/hibernation code ordering. Provide a workaround for these systems allowing them to pass 'acpi_sleep=old_ordering' in the kernel command line so that it will use the pre-ACPI 2.0 ("old") suspend code ordering. Unfortunately, this requires us to add a platform hook to the resuming of devices for recovering the platform in case one of the device drivers' .suspend() routines returns error code. Namely, ACPI 1.0 specifies that _PTS should be called before suspending devices, but _WAK still should be called before resuming them in order to undo the changes made by _PTS. However, if there is an error during suspending devices, they are automatically resumed without returning control to the PM core, so the _WAK has to be called from within device_resume() in that cases. The patch also reorders and refactors the ACPI suspend/hibernation code to avoid duplication as far as reasonably possible. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-12Merge branch 'suspend' of ↵Jesse Barnes
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 into linux-next
2008-06-11ACPI PM: Remove obsolete Toshiba workaroundRafael J. Wysocki
Remove the obsolete workaround for a Toshiba Satellite 4030cdt S1 problem from drivers/acpi/sleep/main.c . Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11PCI ACPI: Drop the second argument of platform_pci_choose_stateRafael J. Wysocki
Since the second argument of acpi_pci_choose_state() and platform_pci_choose_state() is never used, remove it. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11ACPI PM: acpi_pm_device_sleep_state() cleanupDavid Brownell
Get rid of a superfluous acpi_pm_device_sleep_state() parameter. The only legitimate value of that parameter must be derived from the first parameter, which is what all the callers already do. (However, this does not address the fact that ACPI still doesn't set up those flags.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-10PCI: ACPI PCI slot detection driverAlex Chiang
Detect all physical PCI slots as described by ACPI, and create entries in /sys/bus/pci/slots/. Not all physical slots are hotpluggable, and the acpiphp module does not detect them. Now we know the physical PCI geography of our system, without caring about hotplug. [kaneshige.kenji@jp.fujitsu.com: export-kobject_rename-for-pci_hotplug_core] Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Greg KH <greg@kroah.com> [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix build with CONFIG_DMI=n] Signed-off-by: Alex Chiang <achiang@hp.com> Cc: Greg KH <greg@kroah.com> Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Cc: Len Brown <lenb@kernel.org> Acked-by: Len Brown <len.brown@intel.com> Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: introduce pci_slotAlex Chiang
Currently, /sys/bus/pci/slots/ only exposes hotplug attributes when a hotplug driver is loaded, but PCI slots have attributes such as address, speed, width, etc. that are not related to hotplug at all. Introduce pci_slot as the primary data structure and kobject model. Hotplug attributes described in hotplug_slot become a secondary structure associated with the pci_slot. This patch only creates the infrastructure that allows the separation of PCI slot attributes and hotplug attributes. In this patch, the PCI hotplug core remains the only user of this infrastructure, and thus, /sys/bus/pci/slots/ will still only become populated when a hotplug driver is loaded. A later patch in this series will add a second user of this new infrastructure and demonstrate splitting the task of exposing pci_slot attributes from hotplug_slot attributes. - Make pci_slot the primary sysfs entity. hotplug_slot becomes a subsidiary structure. o pci_create_slot() creates and registers a slot with the PCI core o pci_slot_add_hotplug() gives it hotplug capability - Change the prototype of pci_hp_register() to take the bus and slot number (on parent bus) as parameters. - Remove all the ->get_address methods since this functionality is now handled by pci_slot directly. [achiang@hp.com: rpaphp-correctly-pci_hp_register-for-empty-pci-slots] Tested-by: Badari Pulavarty <pbadari@us.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: make headers_check happy] [akpm@linux-foundation.org: nuther build fix] [akpm@linux-foundation.org: fix typo in #include] Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Matthew Wilcox <matthew@wil.cx> Cc: Greg KH <greg@kroah.com> Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Cc: Len Brown <lenb@kernel.org> Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: construct one fakephp slot per PCI slotAlex Chiang
Register one slot per slot, rather than one slot per function. Change the name of the slot to fake%d instead of the pci address. Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Matthew Wilcox <matthew@wil.cx> Cc: Greg KH <greg@kroah.com> Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Cc: Len Brown <lenb@kernel.org> Cc: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: update location of PCI hotplug mailing listsJesse Barnes
Just concentrate PCI traffic at linux-pci@vger rather than splitting it between vger and a sf.net moderated (!) mailing list. Acked-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Scott Murray <scottm@somanetworks.com> Acked-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: fix BLK_DEV_HD_ONLY on ARM dependencies ide: export ide_doubler palm_bk3710: add warm-plug support delkin_cb: add missing __init/__exit tags delkin_cb: add warm-plug support delkin_cb: use struct ide_port_info delkin_cb: set proper hwif->gendev.parent value ide: fix host drivers missing hwif->chipset initialization ide-generic: add missing hwif->chipset setup sis5513: add missing pci_enable_device() call MAINTAINERS: remove SIS 5513 IDE entry ide: remove the ide_etrax100 chipset type
2008-06-10PCI: unhide the SMBus on the Compaq Deskpro ENKrzysztof Helt
This patch unhides the SMBus on Compaq Deskpro EN SFF P667 with the Intel 815E chipset. Unhiding it reveals a THMC51 hardware monitoring chip. Jean Delvare has checked that this machine has no ACPI magic touching the SMBus nor the hardware monitoring chip, so this should be safe. The patch was tested on Fedora Core 9 with 2.6.25.4 kernel. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Tested-by: Rafał Haładuda <rh1985@wp.pl> CC: Jean Delvare <khali@linux-fr.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10fix BLK_DEV_HD_ONLY on ARM dependenciesAdrian Bunk
This patch limits BLK_DEV_HD_ONLY to the ARM platforms offering IRQ_HARDDISK, fixing the following compile error on others: <-- snip --> ... CC drivers/ide/legacy/hd.o ... /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/legacy/hd.c: In function 'hd_times_out': /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/legacy/hd.c:542: error: 'IRQ_HARDDISK' undeclared (first use in this function) /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/legacy/hd.c:542: error: (Each undeclared identifier is reported only once /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/legacy/hd.c:542: error: for each function it appears in.) /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/legacy/hd.c: In function 'do_hd_request': /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/legacy/hd.c:661: error: 'IRQ_HARDDISK' undeclared (first use in this function) /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/legacy/hd.c: In function 'hd_init': /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/legacy/hd.c:765: error: 'IRQ_HARDDISK' undeclared (first use in this function) make[3]: *** [drivers/ide/legacy/hd.o] Error 1 <-- snip --> Reported-by: Adrian Bunk <bunk@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10ide: export ide_doublerAdrian Bunk
This patch fixes the following build error: <-- snip --> ... Building modules, stage 2. MODPOST 1204 modules ERROR: "ide_doubler" [drivers/ide/ide-core.ko] undefined! ... make[2]: *** [__modpost] Error 1 <-- snip --> Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10palm_bk3710: add warm-plug supportBartlomiej Zolnierkiewicz
Don't fail the probe if there are no devices attached to the controller. Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10delkin_cb: add missing __init/__exit tagsBartlomiej Zolnierkiewicz
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10delkin_cb: add warm-plug supportBartlomiej Zolnierkiewicz
Don't fail the probe if there are no devices attached to the controller. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10delkin_cb: use struct ide_port_infoBartlomiej Zolnierkiewicz
Convert the driver to use struct ide_port_info - as a nice side-effect this fixes racy setup of ->io_32bit/unmask settings (after ide_device_add() call device can be already in use). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10delkin_cb: set proper hwif->gendev.parent valueBartlomiej Zolnierkiewicz
hwif->dev was set too late (after ide_device_add() call) so hwif->gendev.parent was not initialized properly. Fix it by setting hw.dev and letting ide_init_port_hw() do the rest. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10ide: fix host drivers missing hwif->chipset initializationBartlomiej Zolnierkiewicz
ide_find_port() now depends on ->chipset being set for occupied ide_hwifs[] slots so all host drivers have to initialize hwif->chipset properly. This patch fixes a regression on hosts with > 1 port or with a single port but no devices attached to it for an affected host drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10ide-generic: add missing hwif->chipset setupBartlomiej Zolnierkiewicz
hwif->chipset need to be set properly or ide-generic driver will break once we make a final step in fixing host drivers' dependence on ide_hwifs[]. Problem was catched early thanks to IDE tree exposure in -mm / -next trees and reported by people listed people (thank you guys!). Reported-by: "John Keller" <jpk@sgi.com> Reported-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com> Reported-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10sis5513: add missing pci_enable_device() callBartlomiej Zolnierkiewicz
Cc: Riccardo Gori <goric@trivenet.it> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10MAINTAINERS: remove SIS 5513 IDE entryAdrian Bunk
- maintainer has not been active for years - URLs no longer exist - covered by the IDE SUBSYSTEM entry - maintainer email bounces Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Lionel.Bouton@inet6.fr Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10ide: remove the ide_etrax100 chipset typeAdrian Bunk
I forgot to remove the ide_etrax100 chipset type when removing the ETRAX_IDE driver. Reported-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10PCIe: fix 'symbol not declared' sparse warningsAlex Chiang
While refreshing my physical PCI slot series against upstream, I noticed a few simple sparse/compile warnings that were easy to fix. Fix the following sparse warnings in PCIe: drivers/pci/pcie/aer/aerdrv.c:86:6: warning: symbol 'pci_no_aer' was not declared. Should it be static? drivers/pci/pcie/portdrv_bus.c:21:17: warning: symbol 'pcie_port_bus_type' was not declared. Should it be static? Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: Unhide the SMBus on the Compaq Evo D510Jean Delvare
One more machine with a hidden Intel SMBus. Unhiding it reveals a SMSC EMC6D100 hardware monitoring chip. I have checked that this machine has no ACPI magic touching the SMBus nor the hardware monitoring chip, so this should be safe. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: eliminate double kfree in intel-iommu initializationJulia Lawall
The destination of goto error also does a kfree(g_iommus), so it is not correct to do one here. This was found using Coccinelle (http://www.emn.fr/x-info/coccinelle/). Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10pciehp: removes redundant NULL write to slot status registerKenji Kaneshige
Cleanup to remove a redundant NULL write to SLOTSTATUS. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10pciehp: fixes typo in dbg_ctrl() in pciehp_hpc.cKenji Kaneshige
Fixup a typo in dbg_ctrl(); it was fetching SLOTSTATUS twice. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10shpchp: check firmware before taking controlKenji Kaneshige
Fix the following problems of shpchp driver about getting hotplug control from firmware. - The shpchp driver must not control the hotplug controller if it fails to get control from the firmware. But current shpchp controls the hotplug controller regardless the result, because it doesn't check the return value of get_hp_hw_control_from_firmware(). - Current shpchp driver doesn't support _OSC. The pciehp driver already have the code for evaluating _OSC and OSHP and shpchp and pciehp can share it. So this patch move that code from pciehp to acpi_pcihp.c. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10pciehp: block signals while waiting for command completionKenji Kaneshige
Since we need to wait for command completion for muximum 1sec, waiting command should not be interrupted by a signal. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10pciehp: evaluate _OSC/OSHP before controller initKenji Kaneshige
Current pciehp evaluates _OSC/OSHP method after some controller initialization is done. So if evaluating _OSC/OSHP is failed, we need to cleanup already initialized data structures or hardware. This clearly is not robust way. With this patch, _OSC/OSHP evaluation is done first. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10pciehp: remove redundant pci_dev initializationKenji Kaneshige
Remove the redundant initialization of pci_dev member of struct controller in pciehp_probe(). It is initialized in pcie_init(). Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI/x86: early dump pci conf space v2Yinghai Lu
Allows us to dump PCI space before any kernel changes have been made. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI/x86: write_pci_config_byte fix offsetYinghai Lu
also add write_pci_config_16 Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10Implement new suspend and hibernation callbacks for platform bussesRafael J. Wysocki
Implement new suspend and hibernation callbacks for the platform bus type. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg KH <greg@kroah.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: implement new suspend/resume callbacksRafael J. Wysocki
Implement new suspend and hibernation callbacks for the PCI bus type. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10Introduce new top level suspend and hibernation callbacksRafael J. Wysocki
Introduce 'struct pm_ops' and 'struct pm_ext_ops' ('ext' meaning 'extended') representing suspend and hibernation operations for bus types, device classes, device types and device drivers. Modify the PM core to use 'struct pm_ops' and 'struct pm_ext_ops' objects, if defined, instead of the ->suspend(), ->resume(), ->suspend_late(), and ->resume_early() callbacks (the old callbacks will be considered as legacy and gradually phased out). The main purpose of doing this is to separate suspend (aka S2RAM and standby) callbacks from hibernation callbacks in such a way that the new callbacks won't take arguments and the semantics of each of them will be clearly specified. This has been requested for multiple times by many people, including Linus himself, and the reason is that within the current scheme if ->resume() is called, for example, it's difficult to say why it's been called (ie. is it a resume from RAM or from hibernation or a suspend/hibernation failure etc.?). The second purpose is to make the suspend/hibernation callbacks more flexible so that device drivers can handle more than they can within the current scheme. For example, some drivers may need to prevent new children of the device from being registered before their ->suspend() callbacks are executed or they may want to carry out some operations requiring the availability of some other devices, not directly bound via the parent-child relationship, in order to prepare for the execution of ->suspend(), etc. Ultimately, we'd like to stop using the freezing of tasks for suspend and therefore the drivers' suspend/hibernation code will have to take care of the handling of the user space during suspend/hibernation. That, in turn, would be difficult within the current scheme, without the new ->prepare() and ->complete() callbacks. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: boot parameter to avoid expansion ROM memory allocationGary Hade
Contention for scarce PCI memory resources has been growing due to an increasing number of PCI slots in large multi-node systems. The kernel currently attempts by default to allocate memory for all PCI expansion ROMs so there has also been an increasing number of PCI memory allocation failures seen on these systems. This occurs because the BIOS either (1) provides insufficient PCI memory resource for all the expansion ROMs or (2) provides adequate PCI memory resource for expansion ROMs but provides the space in kernel unexpected BIOS assigned P2P non-prefetch windows. The resulting PCI memory allocation failures may be benign when related to memory requests for expansion ROMs themselves but in some cases they can occur when attempting to allocate space for more critical BARs. This can happen when a successful expansion ROM allocation request consumes memory resource that was intended for a non-ROM BAR. We have seen this happen during PCI hotplug of an adapter that contains a P2P bridge where successful memory allocation for an expansion ROM BAR on device behind the bridge consumed memory that was intended for a non-ROM BAR on the P2P bridge. In all cases the allocation failure messages can be very confusing for users. This patch provides a new 'pci=norom' kernel boot parameter that can be used to disable the default PCI expansion ROM memory resource allocation. This provides a way to avoid the above described issues on systems that do not contain PCI devices for which drivers or user-level applications depend on the default PCI expansion ROM memory resource allocation behavior. Signed-off-by: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI/MSI: skip calling pci_find_capability from msi_set_mask_bitsHidetoshi Seto
The position of MSI capability is already cached in the msi_desc when we enter the msi_set_mask_bits(). Use it instead. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: remove CVS keywordsAdrian Bunk
This patch removes CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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