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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds2008-02-01
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6: (64 commits) PCI: make pci_bus a struct device PCI: fix codingstyle issues in include/linux/pci.h PCI: fix codingstyle issues in drivers/pci/pci.h PCI: PCIE ASPM support PCI: Fix fakephp deadlock PCI: modify SB700 SATA MSI quirk PCI: Run ACPI _OSC method on root bridges only PCI ACPI: AER driver should only register PCIe devices with _OSC PCI ACPI: Added a function to register _OSC with only PCIe devices. PCI: constify function pointer tables PCI: Convert drivers/pci/proc.c to use unlocked_ioctl pciehp: block new requests from the device before power off pciehp: workaround against Bad DLLP during power off pciehp: wait for 1000ms before LED operation after power off PCI: Remove pci_enable_device_bars() from documentation PCI: Remove pci_enable_device_bars() PCI: Remove users of pci_enable_device_bars() PCI: Add pci_enable_device_{io,mem} intefaces PCI: avoid save the same type of cap multiple times PCI: correctly initialize a structure for pcie_save_pcix_state() ...
| * PCI: make pci_bus a struct deviceGreg Kroah-Hartman2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This moves the pci_bus class device to be a real struct device and at the same time, place it in the device tree in the correct location. Note, the old "bridge" symlink is now gone, but this was a non-standard link and no userspace program used it. If you need to determine the device that the bus is on, follow the standard device symlink, or walk up the device tree. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: fix codingstyle issues in drivers/pci/pci.hGreg Kroah-Hartman2008-02-01
| | | | | | | | | | | | Fixes a few coding style issues in the internal pci.h file Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: PCIE ASPM supportShaohua Li2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Fix fakephp deadlockIan Abbott2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the fakephp driver is used to emulate removal of a PCI device by writing text string "0" to the "power" sysfs attribute file, this causes its parent directory and its contents (including the "power" file) to be deleted before the write operation returns. Unfortunately, it ends up in a deadlock waiting for itself to complete. The deadlock is as follows: sysfs_write_file calls flush_write_buffer which calls sysfs_get_active_two before calling power_write_file in pci_hotplug_core.c via the sysfs store operation. The power_write_file function calls disable_slot in fakephp.c via the slot operation. The disable_slot function calls remove_slot which calls pci_hp_deregister (back in pci_hotplug_core.c) which calls fs_remove_slot which calls sysfs_remove_file to remove the "power" file. The sysfs_remove_file function calls sysfs_hash_and_remove which calls sysfs_addrm_finish which calls sysfs_deactivate. The sysfs_deactivate function sees that something has an active reference on the sysfs_dirent (from the previous call to sysfs_get_active_two back up the call stack somewhere) so waits for the active reference to go away, which is of course impossible. The problem has been present since 2.6.21. This patch breaks the deadlock by queuing work queue items on a single- threaded work queue to remove a slot from sysfs, and to rescan the PCI buses. There is also some protection against disabling a slot that is already being removed. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Cc: Kristen Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: modify SB700 SATA MSI quirkShane Huang2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | SB700 SATA MSI bug will be fixed in SB700 revision A21 at hardware level, but the SB700 revision older than A21 will also be found in the market. This patch modify the original quirk commit bc38b411fe696fad32b261f492cb4afbf1835256 instead of withdrawing it. The patch also removes quirk to 0x4395 because 0x4395 is SB800 device ID. Signed-off-by: Shane Huang <shane.huang@amd.com> Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: Run ACPI _OSC method on root bridges onlyAndrew Patterson2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | 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 Patterson2008-02-01
| | | | | | | | | | | | | | | | | | 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>
| * PCI ACPI: Added a function to register _OSC with only PCIe devices.Andrew Patterson2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The function pci_osc_support_set() traverses every root bridge when checking for _OSC support for a capability. It quits as soon as it finds a device/bridge that doesn't support the requested capability. This won't work for systems that have mixed PCI and PCIe bridges when checking for PCIe features. I split this function into two -- pci_osc_support_set() and pcie_osc_support_set(). The latter is used when only PCIe devices should be traversed. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: constify function pointer tablesJan Engelhardt2008-02-01
| | | | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: Convert drivers/pci/proc.c to use unlocked_ioctlMathieu Segaud2008-02-01
| | | | | | | | | | | | | | | | | | | | Change access to inode thru file->f_dentry->d_inode, and add explicit lock/unlock_kernel() calls. Signed-off-by: Mathieu Segaud <mathieu.segaud@regala.cx> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * pciehp: block new requests from the device before power offKenji Kaneshige2008-02-01
| | | | | | | | | | | | | | | | | | | | | | Disable Bus Master, SERR# and INTx to ensure that no new Requests will be generated from the device before turning power off, in accordance with the specification. 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>
| * pciehp: workaround against Bad DLLP during power offKenji Kaneshige2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Set Bad DLLP Mask bit in Correctable Error Mask Register during turning power off the slot. This is the workaround against Bad DLLP error that sometimes happen during turning power off on the slot which conforms to PCI Express 1.0a spec. The cause of this error seems that PCI Express 1.0a spec doesn't have the following consideration that was added to PCI Express 1.1 spec. "If the port is associated with a hot-pluggable slot (Hot-Plug Capable bit in the Slot Capabilities register set to 1b), and Power Controller Control bit in Slot Control register is 1b(Off), then any transition to DL Inactive must not be considered an error." 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>
| * pciehp: wait for 1000ms before LED operation after power offKenji Kaneshige2008-02-01
| | | | | | | | | | | | | | | | | | | | After turning power off, we must wait for at least 1 second *before* LED operation. 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>
| * PCI: Remove pci_enable_device_bars()Benjamin Herrenschmidt2008-02-01
| | | | | | | | | | | | | | | | | | Now that all in-tree users are gone, this removes pci_enable_device_bars() completely. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: Add pci_enable_device_{io,mem} intefacesBenjamin Herrenschmidt2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pci_enable_device_bars() interface isn't well suited to PCI because you can't actually enable/disable BARs individually on a device. So for example, if a device has 2 memory BARs 0 and 1, and one of them (let's say 1) has not been successfully allocated by the firmware or the kernel, then enabling memory decoding shouldn't be permitted for the entire device since it will decode whatever random address is still in that BAR 1. So a device must be either fully enabled for IO, for Memory, or for both. Not on a per-BAR basis. This provides two new functions, pci_enable_device_io() and pci_enable_device_mem() to replace pci_enable_device_bars(). The implementation internally builds a BAR mask in order to be able to use existing arch infrastructure. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: avoid save the same type of cap multiple timesShaohua Li2008-02-01
| | | | | | | | | | | | | | | | Avoid adding the same type of cap multiple times, otherwise we will see dead loop. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: correctly initialize a structure for pcie_save_pcix_state()Shaohua Li2008-02-01
| | | | | | | | | | | | | | | | | | save_state->cap_nr should be correctly set, otherwise we can't find the saved cap at resume. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: fix typo in pci_save_pcix_stateShaohua Li2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | pci_save/store_state has multiple bugs, which will cause cap can't be saved/restored correctly. Below 3 patches fix them. fix the typo in pci_save_pcix_state Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: use dev_printk in quirk messagesbjorn.helgaas@hp.com2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert quirk printks to dev_printk(). I made the MSI disable messages a little more consistent: - always use "disabled", not "deactivated" - specify "device MSI disabled" or "subordinate MSI disabled" when disabling MSI for only a specific device or subordinate bus Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: print quirk name in debug messagesbjorn.helgaas@hp.com2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of printing this: PCI: Calling quirk c023b250 for 0000:00:00.0 we can print this: pci 0000:00:00.0: calling quirk 0xc023b270: quirk_cardbus_legacy+0x0/0x30() The address is superfluous because sprint_symbol() includes the address if the symbol lookup fails, but this is the same style used in do_initcalls() and pnp_fixup_device(). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: fix for quirk_e100_interrupt()Ivan Kokshaysky2008-02-01
| | | | | | | | | | | | | | | | | | | | | | Check that the e100 is in the D0 power state. If it's not, it won't respond to MMIO accesses and we end up with master-abort machine checks on some platforms. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: Spelling fixesJoe Perches2008-02-01
| | | | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: drivers/pci/msi.c: move arch hooks to the topAdrian Bunk2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the following problem present with older gcc versions: <-- snip --> ... CC drivers/pci/msi.o /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/pci/msi.c:692: warning: weak declaration of `arch_msi_check_device' after first use results in unspecified behavior /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/pci/msi.c:704: warning: weak declaration of `arch_setup_msi_irqs' after first use results in unspecified behavior /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/pci/msi.c:724: warning: weak declaration of `arch_teardown_msi_irqs' after first use results in unspecified behavior ... <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: quirk: enable MSI Mapping on HT1000Sebastien Dugue2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a quirk to enable the MSI mapping capability on HyperTransport bridges. Wire Broadcom's HT1000 to use the quirk. Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Andy Currid <acurrid@nvidia.com> Cc: Peer Chen <pchen@nvidia.com> Cc: Prakash Punnoor <prakash@punnoor.de> Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michael Chan <mchan@broadcom.com> Cc: Greg KH <greg@kroah.com> Cc: Andy Currid <acurrid@nvidia.com> Cc: Peer Chen <pchen@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: Fix warning in setup-res.c on 32-bit platforms with 64-bit resourcesBenjamin Herrenschmidt2008-02-01
| | | | | | | | | | | | | | | | | | This adds appropriate casts to avoid a warning and print the correct values in pr_debug. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: Fix bus resource assignment on 32 bits with 64b resourcesBenjamin Herrenschmidt2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | The current pci_assign_unassigned_resources() code doesn't work properly on 32 bits platforms with 64 bits resources. The main reason is the use of unsigned long in various places instead of resource_size_t. This is a pre-requisite for making powerpc use the generic code instead of its own half-useful implementation. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI Hotplug: PCIeHP: Fix some whitespace damageRolf Eike Beer2008-02-01
| | | | | | | | | | | | | | | | | | PCIeHP: Fix some whitespace damage Signed-off-by: Rolf Eike Beer <eike-hotplug@sf-tec.de> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI Hotplug: pciehp: use generic function to find ext capabilityKenji Kaneshige2008-02-01
| | | | | | | | | | | | | | | | | | Remove duplicated code to find an extend capability in PCIEHP driver. 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>
| * PCI Hotplug: pciehp: remove needless hp_slot calculationKenji Kaneshige2008-02-01
| | | | | | | | | | | | | | | | | | Remove needless hp_slot calculation. This has no functional changes. 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>
| * PCI Hotplug: pciehp: remove needless members from struct controllerKenji Kaneshige2008-02-01
| | | | | | | | | | | | | | | | | | | | Remove needless members from struct controller. This has no functional changes. 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>
| * PCI Hotplug: acpiphp: remove unneeded acpi_get_name function callMUNEDA Takahiro2008-02-01
| | | | | | | | | | | | | | | | | | acpi_get_name() is called before and after dbg(). The latter is useless and should be removed. Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI Hotplug: acpiphp: fix trivial typosMUNEDA Takahiro2008-02-01
| | | | | | | | | | | | | | | | | | fix trivial typos. Signed-off-by: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCIe: fix double initialization bugMark Lord2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Earlier patches to split out the hardware init for PCIe hotplug resulted in some one-time initializations being redone on every resume cycle. Eg. irq/polling initialization. This patch splits the hardware init into two parts, and separates the one-time initializations from those so that they only ever get done once, as intended. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCIE: Make use of the previously split out pcie_init_enable_events() functionMark Lord2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | Make use of the previously split out pcie_init_enable_events() function to reinitialize the hotplug hardware on resume from suspend, but only when pciehp_force==1. Otherwise behaviour is unmodified. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: more fixes for PCIe Hotplug so that it works with ExpressCard slots on ↵Mark Lord2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Dell notebooks (and others?) in conjunction with modparam of pciehp_force=1 Split out the hotplug hardware initialization code from pcie_init() into pcie_init_enable_events(), without changing any functionality. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCIE: fix PCIe Hotplug so that it works with ExpressCard slots on Dell ↵Mark Lord2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | notebooks (and others?) in conjunction with modparam of pciehp_force=1. Fix pciehp_probe() to deal with ExpressCard cards that were inserted prior to the driver being loaded. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: Add missing "space" in printk messagesJoe Perches2008-02-01
| | | | | | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: export pci_restore_msi_state()Linas Vepstas2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PCI error recovery usually involves the PCI adapter being reset. If the device is using MSI, the reset will cause the MSI state to be lost; the device driver needs to restore the MSI state. The pci_restore_msi_state() routine is currently protected by CONFIG_PM; remove this, and also export the symbol, so that it can be used in a modle. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * pci hotplug: fix rpaphp directory namingLinas Vepstas2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix presentation of the slot number in the /sys/bus/pci/slots directory to match that used in the majority of other drivers. > Greg said: > How is anyone supposed to write sane managability tools in the > presence > of such anarchy? > > > ~ # cat /sys/bus/pci/slots/0000:00:02.2/phy_location > > U787A.001.DNZ00Z5-P1-C2 > > Right. This should look like: > > # cat /sys/bus/pci/slots/U787A.001.DNZ00Z5-P1-C2/address > 0000:00:02 This patch implements exactly what you describe. Boot tested. I assume you really mean it -- if so, then please review and ack the patch !? I have absolutely no clue if this breaks any existing IBM tools. I'm pretty sure it doesn't ... but attention Mike Strosaker! does it? Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Cc: <strosake@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: Unhide the SMBus on the HP xw4100Jean Delvare2008-02-01
| | | | | | | | | | | | | | | | | | | | Unhide the SMBus on the HP xw4100. This gives access to a hardware monitoring chip (ADT7463) and to the memory module SPD EEPROMs. I checked that ACPI wasn't accessing the SMBus, so it should be safe. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: More Sanity checks for DMARFenghua Yu2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add and changes a few sanity checks in dmar.c. 1. The haw field in ACPI DMAR table in VT-d spec doesn't describe the range of haw. But since DMA page size is 4KB in DMA remapping, haw should be at least 4KB. The current VT-d code in dmar.c returns failure when haw==0. This sanity check is not accurate and execution can pass when haw is less than one page size 4KB. This patch changes the haw sanity check to validate if haw is less than 4KB. 2. Add dmar_rmrr_units verification. 3. Add parse_dmar_table() verification. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: mark gross <mgross@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: drivers/pci/quirks.c: coding-style cleanupAndrew Morton2008-02-01
| | | | | | | | | | | | | | | | | | Remove lots of space-before-) instances. Perhaps these were a workaround for problems in some long-dead cpp version. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: remove additional pci_scan_child_bus() prototypeAdrian Bunk2008-02-01
| | | | | | | | | | | | | | | | | | | | There's already a prototype for pci_scan_child_bus() at the correct place in pci.h, so there's no reason for an additional one. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: always export pci_scan_single_deviceAdrian Bunk2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the following build error with CONFIG_HOTPLUG=n: MODPOST 2137 modules ERROR: "pci_scan_single_device" [drivers/edac/i82875p_edac.ko] undefined! Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: remove unneeded lock_kernel() in drivers/pci/syscall.c.Diego Woitasen2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | sys_pciconfig_{read,write}() are protected against PCI removal with the reference count in struct pci_dev. The concurrency of pci_user_{read,write}_config_* functions are already protected by pci_lock in drivers/pci/access.c. Signed-off-by: Diego Woitasen <diego@woitasen.com.ar> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: Mem Policy: fix mempolicy usage in pci driverLee Schermerhorn2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In an attempt to ensure memory allocation from the local node, the pci driver temporarily replaces the current task's memory policy with the system default policy. Trying to be a good citizen, the driver then call's mpol_get() on the new policy. When it's finished probing, it undoes the '_get by calling mpol_free() [on the system default policy] and then restores the current task's saved mempolicy. A couple of issues here: 1) it's never necessary to set a task's mempolicy to the system default policy in order to get system default allocation behavior. Simply set the current task's mempolicy to NULL and allocations will fall back to system default policy. 2) we should never [need to] call mpol_free() on the system default policy. [I plan on trapping this with a VM_BUG_ON() in a subsequent patch.] This patch removes the calls to mpol_get() and mpol_free() and uses NULL for the temporary task mempolicy to effect default allocation behavior. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Acked-by: Christoph Lameter <clameter@sgi.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: VIA CX700 quirk to disable PCI Bus ParkingTim Yamin2008-02-01
| | | | | | | | | | | | | | | | | | | | | | PCI Bus Parking and PCI Master read caching on the VIA CX700 is buggy and can lead to problems such as USB2.0 packet loss if a VT6212L controller is on the PCI bus. It's disabled by default, but some BIOSes turn these features on and this patch reverts the configuration to the safe defaults. Signed-off-by: Tim Yamin <tim.yamin@zonbu.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: quirk_vialatency: Omit reading pci revision IDAuke Kok2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | Don't read the revision ID unnecessary since the PCI subsystem fills this field in already. Updated to fix a thinko bug in a previously sent patch. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * PCI: hotplug: Link fakephp lastAlex Chiang2008-02-01
| | | | | | | | | | | | | | | | | | | | | | Currently, fakephp will claim all devices; we really only want it to claim those not in slots. Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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