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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas:
"Enumeration
- Read capability list as dwords, not bytes (Sean O. Stalley)
Resource management
- Don't check for PNP overlaps with unassigned PCI BARs (Bjorn Helgaas)
- Mark invalid BARs as unassigned (Bjorn Helgaas)
- Show driver, BAR#, and resource on pci_ioremap_bar() failure (Bjorn Helgaas)
- Fail pci_ioremap_bar() on unassigned resources (Bjorn Helgaas)
- Assign resources before drivers claim devices (Yijing Wang)
- Claim bus resources before pci_bus_add_devices() (Yijing Wang)
Power management
- Optimize device state transition delays (Aaron Lu)
- Don't clear ASPM bits when the FADT declares it's unsupported (Matthew Garrett)
Virtualization
- Add ACS quirks for Intel 1G NICs (Alex Williamson)
IOMMU
- Add ptr to OF node arg to of_iommu_configure() (Murali Karicheri)
- Move of_dma_configure() to device.c to help re-use (Murali Karicheri)
- Fix size when dma-range is not used (Murali Karicheri)
- Add helper functions pci_get[put]_host_bridge_device() (Murali Karicheri)
- Add of_pci_dma_configure() to update DMA configuration (Murali Karicheri)
- Update DMA configuration from DT (Murali Karicheri)
- dma-mapping: limit IOMMU mapping size (Murali Karicheri)
- Calculate device DMA masks based on DT dma-range size (Murali Karicheri)
ARM Versatile host bridge driver
- Check for devm_ioremap_resource() failures (Jisheng Zhang)
Broadcom iProc host bridge driver
- Add Broadcom iProc PCIe driver (Ray Jui)
Marvell MVEBU host bridge driver
- Add suspend/resume support (Thomas Petazzoni)
Renesas R-Car host bridge driver
- Fix position of MSI enable bit (Nobuhiro Iwamatsu)
- Write zeroes to reserved PCIEPARL bits (Nobuhiro Iwamatsu)
- Change PCIEPARL and PCIEPARH to PCIEPALR and PCIEPAUR (Nobuhiro Iwamatsu)
- Verify that mem_res is 64K-aligned (Nobuhiro Iwamatsu)
Samsung Exynos host bridge driver
- Fix INTx enablement statement termination error (Jaehoon Chung)
Miscellaneous
- Make a shareable UUID for PCI firmware ACPI _DSM (Aaron Lu)
- Clarify policy for vendor IDs in pci.txt (Michael S. Tsirkin)"
* tag 'pci-v4.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (36 commits)
PCI: Read capability list as dwords, not bytes
PCI: layerscape: Simplify platform_get_resource_byname() failure checking
PCI: keystone: Don't dereference possible NULL pointer
PCI: versatile: Check for devm_ioremap_resource() failures
PCI: Don't clear ASPM bits when the FADT declares it's unsupported
PCI: Clarify policy for vendor IDs in pci.txt
PCI/ACPI: Optimize device state transition delays
PCI: Export pci_find_host_bridge() for use inside PCI core
PCI: Make a shareable UUID for PCI firmware ACPI _DSM
PCI: Fix typo in Thunderbolt kernel message
PCI: exynos: Fix INTx enablement statement termination error
PCI: iproc: Add Broadcom iProc PCIe support
PCI: iproc: Add DT docs for Broadcom iProc PCIe driver
PCI: Export symbols required for loadable host driver modules
PCI: Add ACS quirks for Intel 1G NICs
PCI: mvebu: Add suspend/resume support
PCI: Cleanup control flow
sparc/PCI: Claim bus resources before pci_bus_add_devices()
PCI: Assign resources before drivers claim devices (pci_scan_root_bus())
PCI: Fail pci_ioremap_bar() on unassigned resources
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'pci/host-layerscape', 'pci/host-mvebu', 'pci/host-rcar' and 'pci/host-versatile' into next
* pci/host-exynos:
PCI: exynos: Fix INTx enablement statement termination error
* pci/host-iproc:
PCI: iproc: Add Broadcom iProc PCIe support
PCI: iproc: Add DT docs for Broadcom iProc PCIe driver
PCI: Export symbols required for loadable host driver modules
* pci/host-keystone:
PCI: keystone: Don't dereference possible NULL pointer
* pci/host-layerscape:
PCI: layerscape: Simplify platform_get_resource_byname() failure checking
* pci/host-mvebu:
PCI: mvebu: Add suspend/resume support
* pci/host-rcar:
PCI: rcar: Verify that mem_res is 64K-aligned
PCI: rcar: Change PCIEPARL and PCIEPARH to PCIEPALR and PCIEPAUR
PCI: rcar: Write zeroes to reserved PCIEPARL bits
PCI: rcar: Fix position of MSI enable bit
* pci/host-versatile:
PCI: versatile: Check for devm_ioremap_resource() failures
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Check for failure of devm_ioremap_resource().
devm_ioremap_resource() validates the resource it receives, so if we check
for devm_ioremap_resource() failure, we need not check for failure of the
preceding platform_get_resource().
[bhelgaas: changelog]
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The lower 16 bits of the address, which is managed by mem_res, need to be
zero. Check the address to verify this.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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PCIEPARL and PCIEPARH are macros that calculate register addresses.
However, the register names are incorrect. Change them to PCIEPALR and
PCIEPAUR.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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The lower 7 bits of PCIEPARL are reserved. When we write to this register,
these bits must be 0.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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The MSI enable is bit 31, not bit 28. Set the correct bit to initialize
MSI.
Per Phil, "this is odd as MSI works before and after your patch. Since bit
31 just represents the value of MSICAP0[16].MSIE, I think this may just be
used for endpoints. However, you are correct that the bit used was wrong."
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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Add suspend/resume support for the mvebu PCIe host driver. Without this
commit, the system will panic at resume time when PCIe devices are
connected.
Note that we have to use the ->suspend_noirq() and ->resume_noirq() hooks,
because at resume time, the PCI fixups are done at ->resume_noirq() time,
so the PCIe controller has to be ready at this point.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
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devm_ioremap_resource() validates the resource it receives, so if we check
for devm_ioremap_resource() failure, we need not check for failure of the
preceding platform_get_resource().
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Check for failure from platform_get_resource() (this check actually happens
inside devm_ioremap_resource()) before dereferencing the pointer returned
from platform_get_resource().
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Add support for the Broadcom iProc PCIe controller.
pcie-iproc.c is the common core driver, and a front-end bus interface needs
to be added to support different bus interfaces.
pcie-iproc-platform.c contains the support for the platform bus interface.
Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
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Use a semicolon, not a comma, to terminate a statement.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/enumeration:
PCI: Cleanup control flow
sparc/PCI: Claim bus resources before pci_bus_add_devices()
PCI: Assign resources before drivers claim devices (pci_scan_root_bus())
PCI: Assign resources before drivers claim devices (pci_scan_bus())
* pci/virtualization:
PCI: Add ACS quirks for Intel 1G NICs
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Previously, pci_scan_root_bus() created a root PCI bus, enumerated the
devices on it, and called pci_bus_add_devices(), which made the devices
available for drivers to claim them.
Most callers assigned resources to devices after pci_scan_root_bus()
returns, which may be after drivers have claimed the devices. This is
incorrect; the PCI core should not change device resources while a driver
is managing the device.
Remove pci_bus_add_devices() from pci_scan_root_bus() and do it after any
resource assignment in the callers.
Note that ARM's pci_common_init_dev() already called pci_bus_add_devices()
after pci_scan_root_bus(), so we only need to remove the first call:
pci_common_init_dev
pcibios_init_hw
pci_scan_root_bus
pci_bus_add_devices # first call
pci_bus_assign_resources
pci_bus_add_devices # second call
[bhelgaas: changelog, drop "root_bus" var in alpha common_init_pci(),
return failure earlier in mn10300, add "return" in x86 pcibios_scan_root(),
return early if xtensa platform_pcibios_fixup() fails]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
CC: Matt Turner <mattst88@gmail.com>
CC: David Howells <dhowells@redhat.com>
CC: Tony Luck <tony.luck@intel.com>
CC: Michal Simek <monstr@monstr.eu>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
CC: Sebastian Ott <sebott@linux.vnet.ibm.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Chris Metcalf <cmetcalf@ezchip.com>
CC: Chris Zankel <chris@zankel.net>
CC: Max Filippov <jcmvbkbc@gmail.com>
CC: Thomas Gleixner <tglx@linutronix.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Here are some fixes for v4.0. I apologize for how late they are. We
were hoping for some better fixes, but couldn't get them polished in
time. These fix:
- a Xen domU oops with PCI passthrough devices
- a sparc T5 boot failure
- a STM SPEAr13xx crash (use after initdata freed)
- a cpcihp hotplug driver thinko
- an AER thinko that printed stack junk
Details:
Enumeration
- Don't look for ACPI hotplug parameters if ACPI is disabled (Bjorn Helgaas)
Resource management
- Revert "sparc/PCI: Clip bridge windows to fit in upstream windows" (Bjorn Helgaas)
AER
- Avoid info leak in __print_tlp_header() (Rasmus Villemoes)
PCI device hotplug
- Add missing curly braces in cpci_configure_slot() (Dan Carpenter)
ST Microelectronics SPEAr13xx host bridge driver
- Drop __initdata from spear13xx_pcie_driver (Matwey V. Kornilov)
* tag 'pci-v4.0-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
Revert "sparc/PCI: Clip bridge windows to fit in upstream windows"
PCI: Don't look for ACPI hotplug parameters if ACPI is disabled
PCI: cpcihp: Add missing curly braces in cpci_configure_slot()
PCI/AER: Avoid info leak in __print_tlp_header()
PCI: spear: Drop __initdata from spear13xx_pcie_driver
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Struct spear13xx_pcie_driver was in initdata, but we passed a pointer to it
to platform_driver_register(), which can use the pointer at arbitrary times
in the future, even after the initdata is freed. That leads to crashes.
Move spear13xx_pcie_driver and things referenced by it
(spear13xx_pcie_probe() and dw_pcie_host_init()) out of initdata.
[bhelgaas: changelog]
Fixes: 6675ef212dac ("PCI: spear: Fix Section mismatch compilation warning for probe()")
Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
CC: stable@vger.kernel.org # v3.17+
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Here are a couple updates for v4.0.
One fixes a config accessor problem on APM X-Gene that we introduced
when switching to generic config accessors, and the other fixes an
older read-past-end-of-buffer problem in sysfs.
APM X-Gene host bridge driver
- Add register offset to config space base address (Feng Kan)
Miscellaneous
- Don't read past the end of sysfs "driver_override" buffer (Sasha Levin)"
* tag 'pci-v4.0-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: xgene: Add register offset to config space base address
PCI: Don't read past the end of sysfs "driver_override" buffer
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In xgene_pcie_map_bus(), we neglected to add in the register offset when
calculating the config space address. This means all config accesses
operated on the first four bytes of config space.
Add the register offset to the config space base address.
Also correct the xgene_pcie_map_bus() prototype to fix a compiler warning.
[bhelgaas: changelog]
Fixes: 350f8be5bb40 ("PCI: xgene: Convert to use generic config accessors")
Posting: http://lkml.kernel.org/r/1424214840-26498-1-git-send-email-fkan@apm.com
Signed-off-by: Feng Kan <fkan@apm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Tanmay Inamdar <tinamdar@apm.com>
Acked-by: Rob Herring <robh@kernel.org>
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In Linux 4.0-rc1 ARM Versatile PCI build fails to build due to what
appears to be an API update. This patch is a very simple correction,
merely posted as a heads-up to the maintainers. Hopefully a better
fix can be forwarded to Linus.
[ arnd: the patch actually looks correct, so let's take this version ]
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
"We have a few new features this time, including a new SFI-based
cpufreq driver, a new devfreq driver for Tegra Activity Monitor, a new
devfreq class for providing its governors with raw utilization data
and a new ACPI driver for AMD SoCs.
Still, the majority of changes here are reworks of existing code to
make it more straightforward or to prepare it for implementing new
features on top of it. The primary example is the rework of ACPI
resources handling from Jiang Liu, Thomas Gleixner and Lv Zheng with
support for IOAPIC hotplug implemented on top of it, but there is
quite a number of changes of this kind in the cpufreq core, ACPICA,
ACPI EC driver, ACPI processor driver and the generic power domains
core code too.
The most active developer is Viresh Kumar with his cpufreq changes.
Specifics:
- Rework of the core ACPI resources parsing code to fix issues in it
and make using resource offsets more convenient and consolidation
of some resource-handing code in a couple of places that have grown
analagous data structures and code to cover the the same gap in the
core (Jiang Liu, Thomas Gleixner, Lv Zheng).
- ACPI-based IOAPIC hotplug support on top of the resources handling
rework (Jiang Liu, Yinghai Lu).
- ACPICA update to upstream release 20150204 including an interrupt
handling rework that allows drivers to install raw handlers for
ACPI GPEs which then become entirely responsible for the given GPE
and the ACPICA core code won't touch it (Lv Zheng, David E Box,
Octavian Purdila).
- ACPI EC driver rework to fix several concurrency issues and other
problems related to events handling on top of the ACPICA's new
support for raw GPE handlers (Lv Zheng).
- New ACPI driver for AMD SoCs analogous to the LPSS (Low-Power
Subsystem) driver for Intel chips (Ken Xue).
- Two minor fixes of the ACPI LPSS driver (Heikki Krogerus, Jarkko
Nikula).
- Two new blacklist entries for machines (Samsung 730U3E/740U3E and
510R) where the native backlight interface doesn't work correctly
while the ACPI one does (Hans de Goede).
- Rework of the ACPI processor driver's handling of idle states to
make the code more straightforward and less bloated overall (Rafael
J Wysocki).
- Assorted minor fixes related to ACPI and SFI (Andreas Ruprecht,
Andy Shevchenko, Hanjun Guo, Jan Beulich, Rafael J Wysocki, Yaowei
Bai).
- PCI core power management modification to avoid resuming (some)
runtime-suspended devices during system suspend if they are in the
right states already (Rafael J Wysocki).
- New SFI-based cpufreq driver for Intel platforms using SFI
(Srinidhi Kasagar).
- cpufreq core fixes, cleanups and simplifications (Viresh Kumar,
Doug Anderson, Wolfram Sang).
- SkyLake CPU support and other updates for the intel_pstate driver
(Kristen Carlson Accardi, Srinivas Pandruvada).
- cpufreq-dt driver cleanup (Markus Elfring).
- Init fix for the ARM big.LITTLE cpuidle driver (Sudeep Holla).
- Generic power domains core code fixes and cleanups (Ulf Hansson).
- Operating Performance Points (OPP) core code cleanups and kernel
documentation update (Nishanth Menon).
- New dabugfs interface to make the list of PM QoS constraints
available to user space (Nishanth Menon).
- New devfreq driver for Tegra Activity Monitor (Tomeu Vizoso).
- New devfreq class (devfreq_event) to provide raw utilization data
to devfreq governors (Chanwoo Choi).
- Assorted minor fixes and cleanups related to power management
(Andreas Ruprecht, Krzysztof Kozlowski, Rickard Strandqvist, Pavel
Machek, Todd E Brandt, Wonhong Kwon).
- turbostat updates (Len Brown) and cpupower Makefile improvement
(Sriram Raghunathan)"
* tag 'pm+acpi-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (151 commits)
tools/power turbostat: relax dependency on APERF_MSR
tools/power turbostat: relax dependency on invariant TSC
Merge branch 'pci/host-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci into acpi-resources
tools/power turbostat: decode MSR_*_PERF_LIMIT_REASONS
tools/power turbostat: relax dependency on root permission
ACPI / video: Add disable_native_backlight quirk for Samsung 510R
ACPI / PM: Remove unneeded nested #ifdef
USB / PM: Remove unneeded #ifdef and associated dead code
intel_pstate: provide option to only use intel_pstate with HWP
ACPI / EC: Add GPE reference counting debugging messages
ACPI / EC: Add query flushing support
ACPI / EC: Refine command storm prevention support
ACPI / EC: Add command flushing support.
ACPI / EC: Introduce STARTED/STOPPED flags to replace BLOCKED flag
ACPI: add AMD ACPI2Platform device support for x86 system
ACPI / table: remove duplicate NULL check for the handler of acpi_table_parse()
ACPI / EC: Update revision due to raw handler mode.
ACPI / EC: Reduce ec_poll() by referencing the last register access timestamp.
ACPI / EC: Fix several GPE handling issues by deploying ACPI_GPE_DISPATCH_RAW_HANDLER mode.
ACPICA: Events: Enable APIs to allow interrupt/polling adaptive request based GPE handling model
...
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* acpi-resources: (23 commits)
Merge branch 'pci/host-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci into acpi-resources
x86/irq, ACPI: Implement ACPI driver to support IOAPIC hotplug
ACPI: Add interfaces to parse IOAPIC ID for IOAPIC hotplug
x86/PCI: Refine the way to release PCI IRQ resources
x86/PCI/ACPI: Use common ACPI resource interfaces to simplify implementation
x86/PCI: Fix the range check for IO resources
PCI: Use common resource list management code instead of private implementation
resources: Move struct resource_list_entry from ACPI into resource core
ACPI: Introduce helper function acpi_dev_filter_resource_type()
ACPI: Add field offset to struct resource_list_entry
ACPI: Translate resource into master side address for bridge window resources
ACPI: Return translation offset when parsing ACPI address space resources
ACPI: Enforce stricter checks for address space descriptors
ACPI: Set flag IORESOURCE_UNSET for unassigned resources
ACPI: Normalize return value of resource parser functions
ACPI: Fix a bug in parsing ACPI Memory24 resource
ACPI: Add prefetch decoding to the address space parser
ACPI: Move the window flag logic to the combined parser
ACPI: Unify the parsing of address_space and ext_address_space
ACPI: Let the parser return false for disabled resources
...
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Use common resource list management data structure and interfaces
instead of private implementation.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas:
"Enumeration
- Move domain assignment from arm64 to generic code (Lorenzo Pieralisi)
- ARM: Remove artificial dependency on pci_sys_data domain (Lorenzo Pieralisi)
- ARM: Move to generic PCI domains (Lorenzo Pieralisi)
- Generate uppercase hex for modalias var in uevent (Ricardo Ribalda Delgado)
- Add and use generic config accessors on ARM, PowerPC (Rob Herring)
Resource management
- Free resources on failure in of_pci_get_host_bridge_resources() (Lorenzo Pieralisi)
- Fix infinite loop with ROM image of size 0 (Michel Dänzer)
PCI device hotplug
- Handle surprise add even if surprise removal isn't supported (Bjorn Helgaas)
Virtualization
- Mark AMD/ATI VGA devices that don't reset on D3hot->D0 transition (Alex Williamson)
- Add DMA alias quirk for Adaptec 3405 (Alex Williamson)
- Add Wellsburg (X99) to Intel PCH root port ACS quirk (Alex Williamson)
- Add ACS quirk for Emulex NICs (Vasundhara Volam)
MSI
- Fail MSI-X mappings if there's no space assigned to MSI-X BAR (Yijing Wang)
Freescale Layerscape host bridge driver
- Fix platform_no_drv_owner.cocci warnings (Julia Lawall)
NVIDIA Tegra host bridge driver
- Remove unnecessary tegra_pcie_fixup_bridge() (Lucas Stach)
Renesas R-Car host bridge driver
- Fix error handling of irq_of_parse_and_map() (Dmitry Torokhov)
TI Keystone host bridge driver
- Fix error handling of irq_of_parse_and_map() (Dmitry Torokhov)
- Fix misspelling of current function in debug output (Julia Lawall)
Xilinx AXI host bridge driver
- Fix harmless format string warning (Arnd Bergmann)
Miscellaneous
- Use standard parsing functions for ASPM sysfs setters (Chris J Arges)
- Add pci_device_to_OF_node() stub for !CONFIG_OF (Kevin Hao)
- Delete unnecessary NULL pointer checks (Markus Elfring)
- Add and use defines for PCIe Max_Read_Request_Size (Rafał Miłecki)
- Include clk.h instead of clk-private.h (Stephen Boyd)"
* tag 'pci-v3.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (48 commits)
PCI: Add pci_device_to_OF_node() stub for !CONFIG_OF
PCI: xilinx: Convert to use generic config accessors
PCI: xgene: Convert to use generic config accessors
PCI: tegra: Convert to use generic config accessors
PCI: rcar: Convert to use generic config accessors
PCI: generic: Convert to use generic config accessors
powerpc/powermac: Convert PCI to use generic config accessors
powerpc/fsl_pci: Convert PCI to use generic config accessors
ARM: ks8695: Convert PCI to use generic config accessors
ARM: sa1100: Convert PCI to use generic config accessors
ARM: integrator: Convert PCI to use generic config accessors
PCI: versatile: Add DT-based ARM Versatile PB PCIe host driver
ARM: dts: versatile: add PCI controller binding
of/pci: Free resources on failure in of_pci_get_host_bridge_resources()
PCI: versatile: Add DT docs for ARM Versatile PB PCIe driver
PCI: Fail MSI-X mappings if there's no space assigned to MSI-X BAR
r8169: use PCI define for Max_Read_Request_Size
[SCSI] esas2r: use PCI define for Max_Read_Request_Size
tile: use PCI define for Max_Read_Request_Size
rapidio/tsi721: use PCI define for Max_Read_Request_Size
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* pci/host-generic:
of/pci: Free resources on failure in of_pci_get_host_bridge_resources()
* pci/host-versatile:
PCI: versatile: Add DT-based ARM Versatile PB PCIe host driver
ARM: dts: versatile: add PCI controller binding
PCI: versatile: Add DT docs for ARM Versatile PB PCIe driver
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This converts the Versatile PCI host code to a platform driver using the
commom DT parsing and setup. The driver uses only an empty ARM
pci_sys_data struct and does not use pci_common_init_dev init function.
The old host code will be removed in a subsequent commit when Versatile is
completely converted to DT.
I've tested this on QEMU with the sym53c8xx driver in both i/o and memory
mapped modes.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
CC: Russell King <linux@arm.linux.org.uk>
CC: Peter Maydell <peter.maydell@linaro.org>
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* pci/config:
PCI: xilinx: Convert to use generic config accessors
PCI: xgene: Convert to use generic config accessors
PCI: tegra: Convert to use generic config accessors
PCI: rcar: Convert to use generic config accessors
PCI: generic: Convert to use generic config accessors
powerpc/powermac: Convert PCI to use generic config accessors
powerpc/fsl_pci: Convert PCI to use generic config accessors
ARM: ks8695: Convert PCI to use generic config accessors
ARM: sa1100: Convert PCI to use generic config accessors
ARM: integrator: Convert PCI to use generic config accessors
ARM: cns3xxx: Convert PCI to use generic config accessors
PCI: Add generic config accessors
powerpc/PCI: Add struct pci_ops member names to initialization
mn10300/PCI: Add struct pci_ops member names to initialization
MIPS: PCI: Add struct pci_ops member names to initialization
frv/PCI: Add struct pci_ops member names to initialization
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Convert the Xilinx host PCI driver to use the generic config access
functions.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Michal Simek <michal.simek@xilinx.com>
CC: "Sören Brinkmann" <soren.brinkmann@xilinx.com>
CC: linux-arm-kernel@lists.infradead.org
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Convert the xgene host PCI driver to use the generic config access
functions.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Tanmay Inamdar <tinamdar@apm.com>
CC: linux-arm-kernel@lists.infradead.org
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Convert the Tegra host PCI driver to use the generic config access
functions.
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thierry Reding <treding@nvidia.com>
CC: Stephen Warren <swarren@wwwdotorg.org>
CC: Alexandre Courbot <gnurou@gmail.com>
CC: linux-tegra@vger.kernel.org
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Convert the rcar-gen2 host PCI driver to use the generic config access
functions.
This changes the I/O accessors from io(read|write)X to readX/writeX
variants which are equivalent on ARM.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
CC: Simon Horman <horms@verge.net.au>
CC: linux-sh@vger.kernel.org
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Convert the generic host PCI driver to use the generic config access
functions.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Will Deacon <will.deacon@arm.com>
CC: linux-arm-kernel@lists.infradead.org
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'pci/host-xilinx' into next
* pci/host-keystone:
PCI: keystone: Fix misspelling of current function in debug output
* pci/host-tegra:
PCI: tegra: Remove unnecessary tegra_pcie_fixup_bridge()
* pci/host-xgene:
PCI: xgene: Include clk.h instead of clk-private.h
* pci/host-xilinx:
PCI: xilinx: Fix harmless format string warning
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The xilinx PCIe driver prints a register value whose type is propagated to
the type returned by the GENMASK() macro. Unfortunately, that type has
recently changed as the result of a bug fix, so now we get a warning about
the type:
drivers/pci/host/pcie-xilinx.c: In function 'xilinx_pcie_clear_err_interrupts':
drivers/pci/host/pcie-xilinx.c:154:3: warning: format '%d' expects argument of type 'int', but argument 4 has type 'long unsigned int' [-Wformat=]
Change the code so we always print the number as an 'unsigned long' type to
avoid the warning. The original code was fine on 32-bit architectures but
not on 64-bit. Now it works as expected on both.
Fixes: 00b4d9a1412 ("bitops: Fix shift overflow in GENMASK macros")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
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This driver should be including clk.h as it's a clock consumer, not a clock
provider that needs to register clocks early.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Tanmay Inamdar <tinamdar@apm.com>
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The bridge setup is already done by generic code while scanning the buses.
Do not duplicate (or potentially alter) this setup as a fixup.
Tested-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
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Replace a misspelled function name by %s and then __func__.
The function name contains pcie, not pci as in the string.
This was done using Coccinelle, including the use of Levenshtein distance,
as proposed by Rasmus Villemoes.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Murali Karicheri <m-karicheri2@ti.com>
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and 'pci/host-tegra' into next
* pci/host-keystone:
PCI: keystone: Fix error handling of irq_of_parse_and_map()
* pci/host-layerscape:
PCI: layerscape: Fix platform_no_drv_owner.cocci warnings
* pci/host-rcar:
PCI: rcar: Fix error handling of irq_of_parse_and_map()
* pci/host-tegra:
PCI: tegra: Remove unnecessary tegra_pcie_fixup_bridge()
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The bridge setup is already done by generic code while scanning the buses.
Do not duplicate (or potentially alter) this setup as a fixup.
Tested-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thierry Reding <treding@nvidia.com>
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Return value of irq_of_parse_and_map() is unsigned int, with 0 indicating
failure, so testing for negative result never works.
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Phil Edworthy <phil.edworthy@renesas.com>
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No need to set .owner here. The core will do it.
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Return value of irq_of_parse_and_map() is unsigned int, with 0 indicating
failure, so testing for negative result never works.
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-By: Murali Karicheri <m-karicheri2@ti.com>
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Most if not all ARM PCI host controller device drivers either ignore the
domain field in the pci_sys_data structure or just increment it every time
a host controller is probed, using it as a domain counter.
Therefore, instead of relying on pci_sys_data to stash the domain number in
a standard location, ARM pcibios code can be moved to the newly introduced
generic PCI domains code, implemented in commits:
41e5c0f81d3e ("of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()")
670ba0c8883b ("PCI: Add generic domain handling")
ARM code is made to select PCI_DOMAINS_GENERIC by default, which builds
core PCI code that assigns the domain number through the generic function:
void pci_bus_assign_domain_nr(...)
that relies on a DT property to define the domain number or falls back to a
counter according to a predefined logic; its usage replaces the current
domain assignment code in PCI host controllers present in the kernel.
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Yijing Wang <wangyijing@huawei.com>
Reviewed-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> # mvebu
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
CC: Mohit Kumar <mohit.kumar@st.com>
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The DesignWare PCIe MSI hardware does not support MSI-X IRQs. Setting
those up failed as a side effect of a bug which was fixed by 91f8ae823f2b
("PCI: designware: Setup and clear exactly one MSI at a time").
Now that this bug is fixed, MSI-X IRQs need to be rejected explicitly;
otherwise devices trying to use them may end up with incorrectly working
interrupts.
Fixes: 91f8ae823f2b ("PCI: designware: Setup and clear exactly one MSI at a time")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
CC: stable@vger.kernel.org # v3.18+
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core update from Greg KH:
"Here's the set of driver core patches for 3.19-rc1.
They are dominated by the removal of the .owner field in platform
drivers. They touch a lot of files, but they are "simple" changes,
just removing a line in a structure.
Other than that, a few minor driver core and debugfs changes. There
are some ath9k patches coming in through this tree that have been
acked by the wireless maintainers as they relied on the debugfs
changes.
Everything has been in linux-next for a while"
* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
fs: debugfs: add forward declaration for struct device type
firmware class: Deletion of an unnecessary check before the function call "vunmap"
firmware loader: fix hung task warning dump
devcoredump: provide a one-way disable function
device: Add dev_<level>_once variants
ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
ath: use seq_file api for ath9k debugfs files
debugfs: add helper function to create device related seq_file
drivers/base: cacheinfo: remove noisy error boot message
Revert "core: platform: add warning if driver has no owner"
drivers: base: support cpu cache information interface to userspace via sysfs
drivers: base: add cpu_device_create to support per-cpu devices
topology: replace custom attribute macros with standard DEVICE_ATTR*
cpumask: factor out show_cpumap into separate helper function
driver core: Fix unbalanced device reference in drivers_probe
driver core: fix race with userland in device_add()
sysfs/kernfs: make read requests on pre-alloc files use the buffer.
sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
fs: sysfs: return EGBIG on write if offset is larger than file size
...
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next
Remove all .owner fields from platform drivers
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A platform_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas:
"Here are the PCI changes intended for v3.19. I don't think there's
anything very exciting here, but there was a lot of MSI-related stuff
coming via Thomas.
Details:
NUMA
- Allow numa_node override via sysfs (Prarit Bhargava)
Resource management
- Restore detection of read-only BARs (Myron Stowe)
- Shrink decoding-disabled window while sizing BARs (Myron Stowe)
- Add informational printk for invalid BARs (Myron Stowe)
- Remove fixed parameter in pci_iov_resource_bar() (Myron Stowe)
MSI
- Add pci_msi_ignore_mask to prevent writes to MSI/MSI-X Mask Bits (Yijing Wang)
- Revert "PCI: Add x86_msi.msi_mask_irq() and msix_mask_irq()" (Yijing Wang)
- s390/MSI: Use __msi_mask_irq() instead of default_msi_mask_irq() (Yijing Wang)
Virtualization
- xen: Process failure for pcifront_(re)scan_root() (Chen Gang)
- Make FLR and AF FLR reset warning messages different (Gavin Shan)
Generic host bridge driver
- Allocate config space windows after limiting bus number range (Lorenzo Pieralisi)
- Convert to DT resource parsing API (Lorenzo Pieralisi)
Freescale Layerscape
- Add Freescale Layerscape PCIe driver (Minghuan Lian)
NVIDIA Tegra
- Do not build on 64-bit ARM (Thierry Reding)
- Add Kconfig help text (Thierry Reding)
Renesas R-Car
- Make rcar_pci static (Jingoo Han)
Samsung Exynos
- Add exynos prefix to add_pcie_port(), pcie_init() (Jingoo Han)
ST Microelectronics SPEAr13xx
- Add spear prefix to add_pcie_port(), pcie_init() (Jingoo Han)
- Make spear13xx_add_pcie_port() __init (Jingoo Han)
- Remove unnecessary OOM message (Jingoo Han)
TI DRA7xx
- Add dra7xx prefix to add_pcie_port() (Jingoo Han)
- Make dra7xx_add_pcie_port() __init (Jingoo Han)
TI Keystone
- Make ks_dw_pcie_msi_domain_ops static (Jingoo Han)
- Remove unnecessary OOM message (Jingoo Han)
Miscellaneous
- Delete unnecessary NULL pointer checks (Markus Elfring)
- Remove unused to_hotplug_slot() (Gavin Shan)
- Whitespace cleanup (Jingoo Han)
- Simplify if-return sequences (Quentin Lambert)"
* tag 'pci-v3.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (28 commits)
PCI: Remove fixed parameter in pci_iov_resource_bar()
PCI: Add informational printk for invalid BARs
PCI: tegra: Add Kconfig help text
PCI: tegra: Do not build on 64-bit ARM
PCI: spear: Remove unnecessary OOM message
PCI: mvebu: Add a blank line after declarations
PCI: designware: Add a blank line after declarations
PCI: exynos: Remove unnecessary return statement
PCI: imx6: Use tabs for indentation
PCI: keystone: Remove unnecessary OOM message
PCI: Remove unused and broken to_hotplug_slot()
PCI: Make FLR and AF FLR reset warning messages different
PCI: dra7xx: Add __init annotation to dra7xx_add_pcie_port()
PCI: spear: Add __init annotation to spear13xx_add_pcie_port()
PCI: spear: Rename add_pcie_port(), pcie_init() to spear13xx_add_pcie_port(), etc.
PCI: dra7xx: Rename add_pcie_port() to dra7xx_add_pcie_port()
PCI: layerscape: Add Freescale Layerscape PCIe driver
PCI: Simplify if-return sequences
PCI: Delete unnecessary NULL pointer checks
PCI: Shrink decoding-disabled window while sizing BARs
...
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'pci/host-generic', 'pci/host-imx6', 'pci/host-keystone', 'pci/host-layerscape', 'pci/host-mvebu', 'pci/host-rcar', 'pci/host-spear' and 'pci/host-tegra' into next
* pci/host-designware:
PCI: designware: Add a blank line after declarations
* pci/host-dra7xx:
PCI: dra7xx: Add __init annotation to dra7xx_add_pcie_port()
PCI: dra7xx: Rename add_pcie_port() to dra7xx_add_pcie_port()
* pci/host-exynos:
PCI: exynos: Remove unnecessary return statement
PCI: exynos: Add exynos prefix to add_pcie_port()/pcie_init()
* pci/host-generic:
PCI: generic: Convert to DT resource parsing API
PCI: generic: Allocate config space windows after limiting bus number range
* pci/host-imx6:
PCI: imx6: Use tabs for indentation
* pci/host-keystone:
PCI: keystone: Remove unnecessary OOM message
PCI: keystone: Make ks_dw_pcie_msi_domain_ops static
* pci/host-layerscape:
PCI: layerscape: Add Freescale Layerscape PCIe driver
* pci/host-mvebu:
PCI: mvebu: Add a blank line after declarations
* pci/host-rcar:
PCI: rcar: Make rcar_pci static
* pci/host-spear:
PCI: spear: Remove unnecessary OOM message
PCI: spear: Add __init annotation to spear13xx_add_pcie_port()
PCI: spear: Rename add_pcie_port(), pcie_init() to spear13xx_add_pcie_port(), etc.
* pci/host-tegra:
PCI: tegra: Add Kconfig help text
PCI: tegra: Do not build on 64-bit ARM
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Add a standard help text to the Kconfig entry for the Tegra PCIe host
controller driver.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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32-bit and 64-bit ARM use very different infrastructure to register a PCI
host bridge. The Tegra PCIe host controller driver currently only supports
the 32-bit ARM infrastructure, so prevent it from being built on 64-bit ARM
where it will break.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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