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* PCI: PCIe portdrv: Simplify suspend and resumeRafael J. Wysocki2009-02-051-15/+1
| | | | | | | | | | | | | | Simplify suspend and resume of the PCI Express port driver. It no longer needs to save and restore the standard configuration space of the device; this is now done by the PCI PM core layer. This patch is reported to fix the regression tracked as http://bugzilla.kernel.org/show_bug.cgi?id=12598 Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reported-and-tested-by: Parag Warudkar <parag.lkml@gmail.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: properly clean up ASPM link state on device removeAlex Chiang2009-02-051-2/+2
| | | | | | | | | | | | | | | | | | | | | We only want to disable ASPM when the last function is removed from the parent's device list. We determine this by checking to see if the parent's device list is completely empty. Unfortunately, we never hit that code because the parent is considered an upstream port, and never had an ASPM link_state associated with it. The early check for !link_state causes us to return early, we never discover that our device list is empty, and thus we never remove the downstream ports' link_state nodes. Instead of checking to see if the parent's device list is empty, we can check to see if we are the last device on the list, and if so, then we know that we can clean up properly. Cc: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: Use msleep instead of cpu_relax during ASPM link retrainingAndrew Patterson2009-01-071-4/+9
| | | | | | | | | | | | | | | | | | | | | | | The cpu_relax() function can be a noop on certain architectures like IA-64 when CPU threads are disabled, so use msleep instead during link retraining busy/wait loop. Introduce define LINK_RETRAIN_TIMEOUT instead of hard-coding timeout in pcie_aspm_configure_common_clock. Use time_after() to avoid jiffy wraparound when checking for expired timeout. After timeout expires, recheck link status register link training bit instead of checking for expired timeout to avoid possible false positive. Note that Matthew Wilcox came up with the first rough version of this patch. Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: PCIe portdrv: Add kerneldoc comments to remining core funtionsRafael J. Wysocki2009-01-071-0/+34
| | | | | | | | Add kerneldoc comments to the reamining functions in drivers/pci/pcie/portdrv_core.c . Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: PCIe portdrv: Rearrange code so that related things are togetherRafael J. Wysocki2009-01-072-50/+50
| | | | | | | | | Rearrange code in drivers/pci/pcie/portdrv_bus.c and drivers/pci/pcie/portdrv_core.c so that related functions and data structures are closer together. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: PCIe portdrv: Fix suspend and resume of PCI Express port servicesRafael J. Wysocki2009-01-072-67/+0
| | | | | | | | | | | | | | | | | | | | There is a problem with the suspend and resume of PCI Express port service devices that the ->suspend() and ->resume() routines of each service device are called twice in each suspend-resume cycle, which is obviously wrong. The scenario is that first, the PCI Express port driver calls suspend and resume routines of each port service driver from its pcie_portdrv_suspend() and pcie_portdrv_resume() callbacks, respectively (which is correct), and second, the pcie_port_bus_type driver calls them from its ->suspend() and ->resume() callbacks (which is not correct, because it doesn't happen at the right time). The solution is to remove the ->suspend() and ->resume() callbacks from pcie_port_bus_type and the associated functions. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: PCIe portdrv: Add kerneldoc comments to some core functionsRafael J. Wysocki2009-01-071-7/+70
| | | | | | | | | Add kerneldoc comments to some functions in drivers/pci/pcie/portdrv_core.c, since the code in there is not easy to follow without any additional description. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: keep ASPM link state consistent throughout PCIe hierarchyShaohua Li2009-01-071-19/+106
| | | | | | | | | | | | | In a PCIe hierarchy with a switch present, if the link state of an endpoint device is changed, we must check the whole hierarchy from the endpoint device to root port, and for each link in the hierarchy, the new link state should be configured. Previously, the implementation checked the state but forgot to configure the links between root port to switch. Fixes Novell bz #448987. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Tested-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI PM: Split PCI Express port suspend-resumeRafael J. Wysocki2009-01-071-6/+17
| | | | | | | | | | | | Suspend-resume of PCI Express ports has recently been moved into _suspend_late() and _resume_early() callbacks, but some functions executed from there should not be called with interrupts disabled, eg. pci_enable_device(). For this reason, split the suspend-resume of PCI Express ports into parts to be executed with interrupts disabled and with interrupts enabled. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: pcie port driver: remove extra printksBjorn Helgaas2009-01-071-4/+0
| | | | | | | | | | These printks don't contain enough information to be useful. I think it would be more useful to have a message when a service driver binds to a root port. That could contain the service type, the interrupt mode and IRQ, etc. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI hotplug: aerdrv: fix a typo in error messageHidetoshi Seto2009-01-071-1/+1
| | | | | | | "TLP" is an acronym for "Transaction Layer Packet." Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: Suspend and resume PCI Express ports with interrupts disabledRafael J. Wysocki2009-01-071-6/+6
| | | | | | | | | | | | | | | I don't see why the suspend and resume of PCI Express ports should be handled with interrupts enabled and it may even lead to problems in some situations. For this reason, move the suspending and resuming of PCI Express ports into ->suspend_late() and ->resume_early() callbacks executed with interrupts disabled. This patch addresses the regression from 2.6.26 tracked as http://bugzilla.kernel.org/show_bug.cgi?id=12121 . Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* ACPI/PCI: PCIe AER _OSC support capabilities called when root bridge addedAndrew Patterson2009-01-071-1/+0
| | | | | | | | | The _OSC capability OSC_EXT_PCI_CONFIG_SUPPORT is set when the root bridge is added with pci_acpi_osc_support(), so we no longer need to do it in the PCIe AER driver. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* ACPI/PCI: PCIe ASPM _OSC support capabilities called when root bridge addedAndrew Patterson2009-01-071-18/+9
| | | | | | | | | | | The _OSC capabilities OSC_ACTIVE_STATE_PWR_SUPPORT and OSC_CLOCK_PWR_CAPABILITY_SUPPORT are set when the root bridge is added with pci_acpi_osc_support(), so we no longer need to do it in the ASPM driver. Also add the function pcie_aspm_enabled, which returns true if pcie_aspm=off is not on the kernel command-line. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-01-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | This patch is part of a larger patch series which will remove the "char bus_id[20]" name string from struct device. The device name is managed in the kobject anyway, and without any size limitation, and just needlessly copied into "struct device". To set and read the device name dev_name(dev) and dev_set_name(dev) must be used. If your code uses static kobjects, which it shouldn't do, "const char *init_name" can be used to statically provide the name the registered device should have. At registration time, the init_name field is cleared, to enforce the use of dev_name(dev) to access the device name at a later time. We need to get rid of all occurrences of bus_id in the entire tree to be able to enable the new interface. Please apply this patch, and possibly convert any remaining remaining occurrences of bus_id. Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: fix aer resume sanity checkHidetoshi Seto2008-12-161-1/+1
| | | | | | | | | What we have to check here before calling is err_handler->resume, not ->slot_reset. Looks like a copy & paste error from report_slot_reset. Acked-by: Yanmin Zhang <yanmin.zhang@intel.com> Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCIe: ASPM: Break out of endless loop waiting for PCI config bits to switchThomas Renninger2008-12-091-3/+26
| | | | | | | | | | | | Makes a Compaq 6735s boot reliably again. It used to hang in the loop on some boots. Give the link one second to train, otherwise break out of the loop and reset the previously set clock bits. Cc: stable@vger.kernel.org Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: fix AER capability checkYu Zhao2008-10-202-3/+2
| | | | | | | | | | The 'use pci_find_ext_capability everywhere' cleanup brought a new bug, which makes the AER stop working. Fix it by actually using find_ext_cap instead of just find_cap. Drop the unused config space size define while we're at it. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: use pci_find_ext_capability everywhereJesse Barnes2008-10-203-58/+18
| | | | | | | | | | Remove some open coded (and buggy) versions of pci_find_ext_capability in favor of the real routine in the PCI core. Tested-by: Tomasz Czernecki <czernecki@gmail.com> Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: probing debug message uniformizationVincent Legoll2008-10-201-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | This patch uniformizes PCI probing debug boot messages with dev_printk() intead of manual printk() It changes adress range output from [%llx, %llx] to [%#llx-%#llx], like in pci_request_region(). For example, it goes from the mixed-style: PCI: 0000:00:1b.0 reg 10 64bit mmio: [f4280000, f4283fff] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold to uniform: pci 0000:00:1b.0: reg 10 64bit mmio: [0xf4280000-0xf4283fff] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold This patch has been runtime tested, boot log messages diffed, everything looks OK. Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Vincent Legoll <vincent.legoll@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: follow lspci device/vendor styleBjorn Helgaas2008-10-201-1/+1
| | | | | | | | Use "[%04x:%04x]" for PCI vendor/device IDs to follow the format used by lspci(8). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: Fix pcie_aspm=forceSitsofe Wheeler2008-09-161-1/+1
| | | | | | | | | pcie_aspm=force did not work because aspm_force was being double negated leading to the sanity check failing. Moving a bracket should fix this. Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Sitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: add acpi_find_root_bridge_handleJiri Slaby2008-08-181-6/+1
| | | | | | | | | | | Consolidate finding of a root bridge and getting its handle to the one inline function. It's cut & pasted on multiple places. Use this new inline in those. Cc: kristen.c.accardi@intel.com Acked-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: add an option to allow ASPM enabled forciblyShaohua Li2008-07-281-6/+14
| | | | | | | | A new option, pcie_aspm=force, will force ASPM to be enabled, even on system with PCIe 1.0 devices. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: disable ASPM on pre-1.1 PCIe devicesShaohua Li2008-07-281-0/+13
| | | | | | | | | Disable ASPM on pre-1.1 PCIe devices, as many of them don't implement it correctly. Tested-by: Jack Howarth <howarth@bromo.msbb.uc.edu> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: disable ASPM per ACPI FADT settingShaohua Li2008-07-281-0/+5
| | | | | | | | | | The ACPI FADT table includes an ASPM control bit. If the bit is set, do not enable ASPM since it may indicate that the platform doesn't actually support the feature. Tested-by: Jack Howarth <howarth@bromo.msbb.uc.edu> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCIE: port driver: use dev_printk when possibleBjorn Helgaas2008-06-262-14/+13
| | | | | | | Convert printks to use dev_printk(). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCIE: aer: use dev_printk when possibleBjorn Helgaas2008-06-263-21/+19
| | | | | | | Convert printks to use dev_printk(). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCIe: fix 'symbol not declared' sparse warningsAlex Chiang2008-06-102-0/+2
| | | | | | | | | | | | | | | | 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>
* PCI: don't enable ASPM on devices with mixed PCIe/PCI functionsShaohua Li2008-05-221-0/+20
| | | | | | | | | | The Slot 03:00.* of JMicron controller has two functions, but one is PCIE endpoint the other isn't PCIE device, very strange. PCIE spec defines all functions should have the same config for ASPM, so disable ASPM for the whole slot in this case. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-04-291-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (21 commits) pciehp: fix error message about getting hotplug control pci/irq: let pci_device_shutdown to call pci_msi_shutdown v2 pci/irq: restore mask_bits in msi shutdown -v3 doc: replace yet another dev with pdev for consistency in DMA-mapping.txt PCI: don't expose struct pci_vpd to userspace doc: fix an incorrect suggestion to pass NULL for PCI like buses Consistently use pdev as the variable of type struct pci_dev *. pciehp: Fix command write shpchp: fix slot name make pciehp_acpi_get_hp_hw_control_from_firmware() pciehp: Clean up pcie_init() pciehp: Mask hotplug interrupt at controller release pciehp: Remove useless hotplug interrupt enabling pciehp: Fix wrong slot capability check pciehp: Fix wrong slot control register access pciehp: Add missing memory barrier pciehp: Fix interrupt event handlig pciehp: fix slot name Update MAINTAINERS with location of PCI tree PCI: Add Intel SCH PCI IDs ...
| * PCI Express ASPM support should default to 'No'Jesper Juhl2008-04-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Running 'make oldconfig' I just noticed that PCIEASPM defaults to 'y' in Kconfig even though the feature is both experimental and the help text recommends that if you are unsure you say 'n'. It seems to me that this really should default to 'n', not 'y' at the moment. The following patch makes that change. Please consider applying. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | drivers: fix integer as NULL pointer warningsHarvey Harrison2008-04-291-1/+1
|/ | | | | Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PCI: replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-04-214-6/+6
| | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI: aerdrv_acpi.c: remove unneeded NULL checkAdrian Bunk2008-04-211-1/+1
| | | | | | | | | There's no reason for checking pdev->bus for being NULL here (and we'd anyway Oops 3 lines below if it was). Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI: add PCI Express ASPM supportShaohua Li2008-04-213-0/+834
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PCI Express ASPM defines a protocol for PCI Express components in the D0 state to reduce Link power by placing their Links into a low power state and instructing the other end of the Link to do likewise. This capability allows hardware-autonomous, dynamic Link power reduction beyond what is achievable by software-only controlled power management. However, The device should be configured by software appropriately. Enabling ASPM will save power, but will introduce device latency. This patch adds ASPM support in Linux. It introduces a global policy for ASPM, a sysfs file /sys/module/pcie_aspm/parameters/policy can control it. The interface can be used as a boot option too. Currently we have below setting: -default, BIOS default setting -powersave, highest power saving mode, enable all available ASPM state and clock power management -performance, highest performance, disable ASPM and clock power management By default, the 'default' policy is used currently. In my test, power difference between powersave mode and performance mode is about 1.3w in a system with 3 PCIE links. Note: some devices might not work well with aspm, either because chipset issue or device issue. The patch provide API (pci_disable_link_state), driver can disable ASPM for specific device. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI: #if 0 pci_cleanup_aer_correct_error_status()Adrian Bunk2008-04-211-1/+2
| | | | | | | | | | #if 0 the no longer used pci_cleanup_aer_correct_error_status(). Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI: pcie AER: don't check _OSC when acpi is disabledYinghai Lu2008-04-211-0/+3
| | | | | | | | | | | | | | | | | | | [PATCH] pcie AER: don't check _OSC when acpi is disabled when acpi=off or pci=noacpi, get warning AER service couldn't init device 0000:00:0a.0:pcie01 - no _OSC support AER service couldn't init device 0000:00:0e.0:pcie01 - no _OSC support AER service couldn't init device 0000:00:0f.0:pcie01 - no _OSC support AER service couldn't init device 0000:80:0b.0:pcie01 - no _OSC support AER service couldn't init device 0000:80:0e.0:pcie01 - no _OSC support AER service couldn't init device 0000:80:0f.0:pcie01 - no _OSC support so don't check _OSC in aer_osc_setup Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Revert "PCI: PCIE ASPM support"Greg Kroah-Hartman2008-02-023-825/+0
| | | | | | | | | | | This reverts commit 6c723d5bd89f03fc3ef627d50f89ade054d2ee3b. It caused build errors on non-x86 platforms, config file confusion, and even some boot errors on some x86-64 boxes. All around, not quite ready for prime-time :( Cc: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI: PCIE ASPM supportShaohua Li2008-02-023-0/+825
| | | | | | | | | | | | | | | | | | | | | | | | | | | | PCI Express ASPM defines a protocol for PCI Express components in the D0 state to reduce Link power by placing their Links into a low power state and instructing the other end of the Link to do likewise. This capability allows hardware-autonomous, dynamic Link power reduction beyond what is achievable by software-only controlled power management. However, The device should be configured by software appropriately. Enabling ASPM will save power, but will introduce device latency. This patch adds ASPM support in Linux. It introduces a global policy for ASPM, a sysfs file /sys/module/pcie_aspm/parameters/policy can control it. The interface can be used as a boot option too. Currently we have below setting: -default, BIOS default setting -powersave, highest power saving mode, enable all available ASPM state and clock power management -performance, highest performance, disable ASPM and clock power management By default, the 'default' policy is used currently. In my test, power difference between powersave mode and performance mode is about 1.3w in a system with 3 PCIE links. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI: Run ACPI _OSC method on root bridges onlyAndrew Patterson2008-02-021-16/+6
| | | | | | | | | | | | According to the PCI Firmware Specification Revision 3.0 section 4.5, _OSC should only be called on a root brdige. Here is the relevant passage: "The _OSC interface defined in this section applies only to Host Bridge ACPI devices that originate PCI, PCI-X, or PCI Express hierarchies". Changed the code to find the parent root bridge of the device and call _OSC on that. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI ACPI: AER driver should only register PCIe devices with _OSCAndrew Patterson2008-02-021-1/+1
| | | | | | | | | AER is only used with PCIe devices so we should only check PCIe devices for _OSC support. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* pcie port driver: correctly detect native PME featureShaohua Li2008-02-021-3/+2
| | | | | | | | | Native PME is capability of root port or root complex event collector. It's not determined by PCI PME capability. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* pci-aer: fix kernel-doc mistakesRandy Dunlap2007-11-281-14/+15
| | | | | | | | | | Fix kernel-doc parameter names and ending block comments (change **/ to */). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Linas Vepstas <linas@linas.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI: pcie portdriver: initialize returned valueLinas Vepstas2007-11-281-1/+1
| | | | | | | | | | The pcie protdrv status can be returned uninitialized, if there are no children under a device. This leads to bad responses downstream. Fix this. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* pci: implement "pci=noaer"Randy Dunlap2007-10-131-0/+9
| | | | | | | | | | | | For cases in which CONFIG_PCIEAER=y (such as distro kernels), allow users to disable PCIE Advanced Error Reporting by using "pci=noaer" on the kernel command line. This can be used to work around hardware or (kernel) software problems. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* pciehp: remove CONFIG_HOTPLUG_PCI_PCIE_POLL_EVENT_MODEKenji Kaneshige2007-10-131-9/+0
| | | | | | | | | | | | | | Remove unnecessary CONFIG_HOTPLUG_PCI_PCIE_EVENT_MODE. The CONFIG_HOTPLUG_PCI_PCIE_POLL_EVENT_MODE option is not needed because polling mechanism can be enabled through 'pciehp_poll_mode' module option. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* some kmalloc/memset ->kzalloc (tree wide)Yoann Padioleau2007-07-191-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc). Here is a short excerpt of the semantic patch performing this transformation: @@ type T2; expression x; identifier f,fld; expression E; expression E1,E2; expression e1,e2,e3,y; statement S; @@ x = - kmalloc + kzalloc (E1,E2) ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\) - memset((T2)x,0,E1); @@ expression E1,E2,E3; @@ - kzalloc(E1 * E2,E3) + kcalloc(E1,E2,E3) [akpm@linux-foundation.org: get kcalloc args the right way around] Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <bryan.wu@analog.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jiri Kosina <jkosina@suse.cz> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Pierre Ossman <drzeus-list@drzeus.cx> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PCI: pcie: remove SPIN_LOCK_UNLOCKEDMilind Arun Choudhary2007-07-121-1/+1
| | | | | | Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI aer: add pci_cleanup_aer_correct_aer_statusStephen Hemminger2007-07-121-0/+16
| | | | | | | | | | | | | Function to clear bogus correctable errors. Analog to pci_aer_uncorrect_are_status. The Marvell chips seem to start out with a bogus value that needs to be cleared. Yanmin ported it to 2.6.22-rc4 by fixing a fuzz patch applying info. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Acked-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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