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path: root/drivers/acpi
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2009-09-19Merge branch 'sfi-base' into releaseLen Brown
Conflicts: drivers/acpi/power.c Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-19Merge branch 'linus' into releaseLen Brown
2009-09-16Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (75 commits) PCI hotplug: clean up acpi_run_hpp() PCI hotplug: acpiphp: use generic pci_configure_slot() PCI hotplug: shpchp: use generic pci_configure_slot() PCI hotplug: pciehp: use generic pci_configure_slot() PCI hotplug: add pci_configure_slot() PCI hotplug: clean up acpi_get_hp_params_from_firmware() interface PCI hotplug: acpiphp: don't cache hotplug_params in acpiphp_bridge PCI hotplug: acpiphp: remove superfluous _HPP/_HPX evaluation PCI: Clear saved_state after the state has been restored PCI PM: Return error codes from pci_pm_resume() PCI: use dev_printk in quirk messages PCI / PCIe portdrv: Fix pcie_portdrv_slot_reset() PCI Hotplug: convert acpi_pci_detect_ejectable() to take an acpi_handle PCI Hotplug: acpiphp: find bridges the easy way PCI: pcie portdrv: remove unused variable PCI / ACPI PM: Propagate wake-up enable for devices w/o ACPI support ACPI PM: Replace wakeup.prepared with reference counter PCI PM: Introduce device flag wakeup_prepared PCI / ACPI PM: Rework some debug messages PCI PM: Simplify PCI wake-up code ... Fixed up conflict in arch/powerpc/kernel/pci_64.c due to OF device tree scanning having been moved and merged for the 32- and 64-bit cases. The 'needs_freset' initialization added in 6e19314cc ("PCI/powerpc: support PCIe fundamental reset") is now in arch/powerpc/kernel/pci_of_scan.c.
2009-09-15Merge branch 'x86-txt-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-txt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, intel_txt: clean up the impact on generic code, unbreak non-x86 x86, intel_txt: Handle ACPI_SLEEP without X86_TRAMPOLINE x86, intel_txt: Fix typos in Kconfig help x86, intel_txt: Factor out the code for S3 setup x86, intel_txt: tboot.c needs <asm/fixmap.h> intel_txt: Force IOMMU on for Intel TXT launch x86, intel_txt: Intel TXT Sx shutdown support x86, intel_txt: Intel TXT reboot/halt shutdown support x86, intel_txt: Intel TXT boot support
2009-09-10ACPI button: provide lid status functionsJesse Barnes
Some drivers need to know when a lid event occurs and get the current status. This can be useful for when a platform firmware clobbers some hardware state at lid time, and a driver needs to restore things when the lid is opened again. Acked-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net>
2009-09-09PCI / ACPI PM: Propagate wake-up enable for devices w/o ACPI supportRafael J. Wysocki
Some PCI devices (not PCI Express), like PCI add-on cards, can generate PME#, but they don't have any special platform wake-up support. For this reason, even if they generate PME# to wake up the system from a sleep state, wake-up events are not generated by the platform. It turns out that, at least on some systems, PCI bridges and the PCI host bridge have ACPI GPEs associated with them that, if enabled to generate wake-up events, allow the system to wake up if one of the add-on devices asserts PME# while the system is in a sleep state. Following this observation, if a PCI device without direct ACPI wake-up support is prepared to wake up the system during a transition into a sleep state (eg. suspend to RAM), try to configure the bridges on the path from the device to the root bridge to wake-up the system. Reviewed-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-09ACPI PM: Replace wakeup.prepared with reference counterRafael J. Wysocki
The wakeup.prepared flag is used for marking devices that have the wake-up power already enabled, so that the wake-up power is not enabled twice in a row for the same device. This assumes, however, that device wake-up power will only be enabled once, while the device is being prepared for a system-wide sleep transition, and the second attempt is made by acpi_enable_wakeup_device_prep(). With the upcoming PCI wake-up rework this assumption will not hold any more for PCI bridges and the root bridge whose wake-up power may be enabled as a result of wake-up enable propagation from other devices (eg. add-on devices that are not associated with any GPEs). Thus, there may be many attempts to enable wake-up power on a PCI bridge or the root bridge during a system power state transition and it's better to replace wakeup.prepared with a reference counter. Reviewed-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-09PCI / ACPI PM: Rework some debug messagesRafael J. Wysocki
Move a debug message from acpi_pci_sleep_wake() to acpi_pm_device_sleep_wake() and use the standard dev_*() macros in there. Reviewed-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-09ACPI: export acpi_pci_root and friendsAlex Chiang
We can simplify ACPI drivers if we can tell whether a handle is an ACPI PCI root or not. Reviewed-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-08ACPICA: Windows compatibility: autoexecute root _INI methodBob Moore
Add support for execution of an _INI method at the namespace root. Although not defined in the ACPI specification, this support was added to Windows around the Vista timeframe. It is added here for Windows compatibility. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-08ACPICA: Update _OSI with new Windows OS stringsBob Moore
Added strings for Windows server 2008, Windows Vista SP1, Windows 7, and Windows server 2008 R2. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-08ACPICA: Fix memory leak for ill-formed Package objectsBob Moore
Fixes a possible memory leak in the interpreter for package objects if the package initializer list is longer than the defined size of the package. This apparently can only happen if the BIOS changes the package size on the fly (seen in a _PSS object), as both iASL and the other compiler do not allow this. The interpreter will truncate the package to the defined size (and issue an error message), but can leave the extra objects undeleted if they have been pre-created during the argument processing (such is the case if the package consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. http://www.acpica.org/bugzilla/show_bug.cgi?id=805 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-08ACPICA: Remove error message for Store(Localx,Localx)Bob Moore
We silently ignore this construct for Windows compatibility ACPICA BZ 785. http://www.acpica.org/bugzilla/show_bug.cgi?id=785 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-08ACPICA: Fix extraneous warning if _DSM returns a packageBob Moore
_DSM can return any type of object, so validation on the return type cannot be performed. ACPICA BZ 802. http://www.acpica.org/bugzilla/show_bug.cgi?id=802 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-08dmi: extend dmi_get_year() to dmi_get_date()Tejun Heo
There are cases where full date information is required instead of just the year. Add month and day parsing to dmi_get_year() and rename it to dmi_get_date(). As the original function only required '/' followed by any number of parseable characters at the end of the string, keep that behavior to avoid upsetting existing users. The new function takes dates of format [mm[/dd]]/yy[yy]. Year, month and date are checked to be in the ranges of [1-9999], [1-12] and [1-31] respectively and any invalid or out-of-range component is returned as zero. The dummy implementation is updated accordingly but the return value is updated to indicate field not found which is consistent with how other dummy functions behave. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-09-05Merge branch 'bugzilla-13002' into releaseLen Brown
2009-09-05Revert "ACPI: Attach the ACPI device to the ACPI handle as early as possible"Len Brown
This reverts commit eab4b645769fa2f8703f5a3cb0cc4ac090d347af. http://bugzilla.kernel.org/show_bug.cgi?id=13002 Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-02Merge commit 'v2.6.31-rc8' into x86/txtIngo Molnar
Conflicts: arch/x86/kernel/reboot.c security/Kconfig Merge reason: resolve the conflicts, bump up from rc3 to rc8. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-01x86, intel_txt: clean up the impact on generic code, unbreak non-x86Shane Wang
Move tboot.h from asm to linux to fix the build errors of intel_txt patch on non-X86 platforms. Remove the tboot code from generic code init/main.c and kernel/cpu.c. Signed-off-by: Shane Wang <shane.wang@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-08-31Merge branch 'bugzilla-13745' into releaseLen Brown
2009-08-31ACPI: fix NULL bug for HID/UID stringHugh Dickins
acpi_device->pnp.hardware_id and unique_id are now allocated pointers, replacing the previous arrays. acpi_device_install_notify_handler() oopsed on the NULL hid when probing the video device, and perhaps other uses are vulnerable too. So initialize those pointers to empty strings when there is no hid or uid. Also, free hardware_id and unique_id when when acpi_device is going to be freed. http://bugzilla.kernel.org/show_bug.cgi?id=14096 Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-31ACPI: pci_slot.ko wants a 64-bit _SUNAlex Chiang
Similar to commit b6adc195 (PCI hotplug: acpiphp wants a 64-bit _SUN), pci_slot.ko reads and creates sysfs directories based on the _SUN method. Certain HP platforms return 64 bits in _SUN. This change to pci_slot.ko allows us to see the correct sysfs directories. Reported-by: Chad Smith <chad.smith@hp.com> Cc: stable@kernel.org Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-31ACPI video: work-around BIOS AML bug in _BQCZhang Rui
_BQC on some laptops returns an uninitialized value when it's invoked for the first time. Set the laptop to the maximum backlight level in this case. http://bugzilla.kernel.org/attachment.cgi?id=22675 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-29ACPI: video - rename cdev to cooling_dev -- syntax onlyDmitry Torokhov
Cdev name is normally used for ether class devices or character devices so rename member to avoid confusion for casual reader of the code. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-29ACPI: video - fix potential crash when unloadingDmitry Torokhov
thermal_cooling_device_register() returns error encoded in a pointer when it fails in which case we need to explictly set device->cdev to NULL so we don't try to unregister it when unloading. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-29ACPI: sleep: another HP DMI entry for init_set_sci_en_on_resumeLen Brown
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv3 Notebook PC") http://bugzilla.kernel.org/show_bug.cgi?id=13745 Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-29ACPI: EC: Drop orphan commentAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-29ACPI: EC: use BURST mode only for MSI notebooksAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-29ACPI: EC: Merge IRQ and POLL modesAlexey Starikovskiy
In general, EC transaction should complete in less than 1ms, thus it is possible to merge wait for 1ms in poll mode and 1ms of interrupt transaction timeout. Still, driver will wait 500ms for EC to complete transaction. This significantly simplifies driver and makes it immune to problematic EC interrupt implementations. It also may lessen kernel start-up time by 500ms. References: http://bugzilla.kernel.org/show_bug.cgi?id=12949 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-29ACPI battery: work around negative s16 battery current on AcerHector Martin
Acer Aspire 8930G laptops (and possibly others) report the battery current as a 16-bit signed negative when it is charging. It also reports it as 0x10000 when the current is 0. This patch adds a quirk for this which takes the absolute value of the reported current cast to an s16. This is a DSDT bug present in the latest BIOS revision (the EC register is 16 bits signed and the DSDT attempts to take the 16-bit two's complement of this, which works for discharge but not charge. It also breaks zero values because a 32-bit register is used and the high bits aren't thrown away). I've enabled this for all Acer systems which report in mA units. This should be safe since it won't break compliant systems unless they report a current above 32A, which is insane. The patch also detects the valid 32-bit value -1, which indicates unknown status, and does not attempt the fix in that case (note that this does not conflict with 16-bit -1, which is 65535 as read normally and gets translated to 1mA). Signed-off-by: Hector Martin <hector@marcansoft.com> Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-29ACPI video: ignore buggy _BQCVladimir Serbinenko
_BQC doesn't return a value listed in _BCL method. http://bugzilla.kernel.org/show_bug.cgi?id=13511 ingore the buggy _BQC method in this case Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Signed-off-by: Scott Howard <showard314@gmail.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPI: check acpi_disabled in acpi_table_parse() and acpi_table_parse_entries()Len Brown
Allow consumers of the acpi_table_parse()/acpi_table_parse_entries() API to gracefully handle the acpi_disabled=1 case via return value rather than checking the global flag themselves. Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPI: Move definition of PREFIX from acpi_bus.h to internal..hLen Brown
Linux/ACPI core files using internal.h all PREFIX "ACPI: ", however, not all ACPI drivers use/want it -- and they should not have to #undef PREFIX to define their own. Add GPL commment to internal.h while we are there. This does not change any actual console output, asside from a whitespace fix. Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: acpi_reset: Bypass port validation mechanismBob Moore
Allow writes to reserved ports. This change may eventually be driven down in to acpi_write and acpi_read. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: Add support for module-level executable AML codeLin Ming
Add limited support for executable AML code that exists outside of any control method. This type of code has been illegal since ACPI 2.0. The code must exist in an If/Else/While block. All AML tables are supported, including tables that are dynamically loaded. ACPICA BZ 762. http://acpica.org/bugzilla/show_bug.cgi?id=762 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: ACPI 4: Add validation for new predefined names.Bob Moore
Added 31 new names for ACPI 4.0. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: reformat predefined method table, no functional changeLin Ming
Reformatted the methods that return package objects. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: Fix fault if acpi_terminate is called twiceBob Moore
Fixes a problem with the mechanism that prevents problems if the acpi_terminate interface is inadvertently called more than once before the ACPICA code is re-initialized. ACPICA BZ 795. http://acpica.org/bugzilla/show_bug.cgi?id=795 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: ACPI 4.0 : Add new return package type, restructure module.Bob Moore
Added one new package type, a package that contains a revision number and a variable number of sub-packages. Restructured the module to put the sub-package list traversal in a separate function. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: Add repair for predefined methods that return nested packagesBob Moore
Fixes a problem where a predefined method is defined to return a variable-length Package of sub-packages. If the length is one, the BIOS code occasionally creates a simple single package with no sub-packages. This code attempts to fix the problem by wrapping a new package object around the existing package. ACPICA BZ 790. http://acpica.org/bugzilla/show_bug.cgi?id=790 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: Move predefined repair code to new file, no functional changeBob Moore
New file is nsrepair.c. This is in preparation for additional errror correcting code. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPI: don't free non-existent backlight in acpi video moduleKeith Packard
acpi_video_put_one_device was attempting to remove sysfs entries and unregister a backlight device without first checking that said backlight device structure had been created. Signed-off-by: Keith Packard <keithp@keithp.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: Windows compatibility fix: same buffer/string storeLin Ming
Fix a compatibility issue when the same buffer or string is stored to itself. This has been seen in the field. Previously, ACPICA would zero out the buffer/string. Now, the operation is treated as a NOP. http://bugzilla.acpica.org/show_bug.cgi?id=803 Reported-by: Rezwanul Kabir <Rezwanul_Kabir@Dell.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPI: video: remove unneeded memsetsZhang Rui
device->cap and video->cap are zeroed initially so we don't need to clear them again. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: fix leak of acpi_os_validate_addressLin Ming
http://bugzilla.kernel.org/show_bug.cgi?id=13620 If the dynamic region is created and added to resource list over and over again, it has the potential to be a memory leak by growing the list every time. This patch fixes the memory leak, as below 1) add a new field "count" to struct acpi_res_list. When inserting, if the region(addr, len) is already in the resource list, we just increase "count", otherwise, the region is inserted with count=1. When deleting, the "count" is decreased, if it's decreased to 0, the region is deleted from the resource list. With "count", the region with same address and length can only be inserted to the resource list once, so prevent potential memory leak. 2) add a new function acpi_os_invalidate_address, which is called when region is deleted. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: Clarify common suffix for error/warning messagesBob Moore
Added parens around the acpica version/modulename/linenumber to clearly differentiate this group from the rest of the message. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: Fix: Predefined object repair executed only onceBob Moore
This fixes a problem where the code that attempts to repair/convert an object of incorrect type is only executed on the first time the predefined method is called. The mechanism that disables warnings on subsequent calls was interfering with the repair mechanism. ACPICA BZ 781. http://acpica.org/bugzilla/show_bug.cgi?id=781 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: Dump table header - suppress output of non-printable charactersBob Moore
Function acpi_tb_print_table_header. Some ACPI tables contain non-printable characters in one of the string fields of the the header - Signature, OemId, OemTableId, or CompilerId. Invalid characters are replaced by '?'. ACPICA BZ 788. http://acpica.org/bugzilla/show_bug.cgi?id=788 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: Fix several acpi_attach_data problemsBob Moore
Handler was never invoked. Now invoked if/when host node is deleted. Data object was not automatically deleted when host node was deleted. Interface to handler had an unused parameter, removed it. ACPICA BZ 778. http://acpica.org/bugzilla/show_bug.cgi?id=778 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: ACPI 4.0: Interpreter support for IPMI.Lin Ming
Adds support for IPMI which is similar to SMBus and uses a bi-directional data buffer. ACPICA BZ 773. http://acpica.org/bugzilla/show_bug.cgi?id=773 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
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