linux/drivers/of/base.c, branch v3.12.14

of: fix unnecessary warning on missing /cpus node

2013-10-14T11:43:44Z

Not all DT platforms have all the cpus collected under a /cpus node. That just happens to be a details of FDT, ePAPR and PowerPC platforms. Sparc does something different, but unfortunately the current code complains with a warning if /cpus isn't there. This became a problem with commit f86e4718, "driver/core cpu: initialize of_node in cpu's device structure", which caused the function to get called for all architectures. This commit is a temporary fix to fail silently if the cpus node isn't present. A proper fix will come later to allow arch code to provide a custom mechanism for decoding the CPU hwid if the 'reg' property isn't appropriate. Signed-off-by: Grant Likely Cc: David Miller Cc: Sudeep KarkadaNagesha Cc: Rob Herring

Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux

2013-09-10T20:53:52Z

Pull device tree core updates from Grant Likely: "Generally minor changes. A bunch of bug fixes, particularly for initialization and some refactoring. Most notable change if feeding the entire flattened tree into the random pool at boot. May not be significant, but shouldn't hurt either" Tim Bird questions whether the boot time cost of the random feeding may be noticeable. And "add_device_randomness()" is definitely not some speed deamon of a function. * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux: of/platform: add error reporting to of_amba_device_create() irq/of: Fix comment typo for irq_of_parse_and_map of: Feed entire flattened device tree into the random pool of/fdt: Clean up casting in unflattening path of/fdt: Remove duplicate memory clearing on FDT unflattening gpio: implement gpio-ranges binding document fix of: call __of_parse_phandle_with_args from of_parse_phandle of: introduce of_parse_phandle_with_fixed_args of: move of_parse_phandle() of: move documentation of of_parse_phandle_with_args of: Fix missing memory initialization on FDT unflattening of: consolidate definition of early_init_dt_alloc_memory_arch() of: Make of_get_phy_mode() return int i.s.o. const int include: dt-binding: input: create a DT header defining key codes. of/platform: Staticize of_platform_device_create_pdata() of: Specify initrd location using 64-bit dt: Typo fix OF: make of_property_for_each_{u32|string}() use parameters if OF is not enabled

Merge tag 'pm+acpi-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2013-09-03T22:59:39Z

Pull ACPI and power management updates from Rafael Wysocki: 1) ACPI-based PCI hotplug (ACPIPHP) subsystem rework and introduction of Intel Thunderbolt support on systems that use ACPI for signalling Thunderbolt hotplug events. This also should make ACPIPHP work in some cases in which it was known to have problems. From Rafael J Wysocki, Mika Westerberg and Kirill A Shutemov. 2) ACPI core code cleanups and dock station support cleanups from Jiang Liu and Rafael J Wysocki. 3) Fixes for locking problems related to ACPI device hotplug from Rafael J Wysocki. 4) ACPICA update to version 20130725 includig fixes, cleanups, support for more than 256 GPEs per GPE block and a change to make the ACPI PM Timer optional (we've seen systems without the PM Timer in the field already). One of the fixes, related to the DeRefOf operator, is necessary to prevent some Windows 8 oriented AML from causing problems to happen. From Bob Moore, Lv Zheng, and Jung-uk Kim. 5) Removal of the old and long deprecated /proc/acpi/event interface and related driver changes from Thomas Renninger. 6) ACPI and Xen changes to make the reduced hardware sleep work with the latter from Ben Guthro. 7) ACPI video driver cleanups and a blacklist of systems that should not tell the BIOS that they are compatible with Windows 8 (or ACPI backlight and possibly other things will not work on them). From Felipe Contreras. 8) Assorted ACPI fixes and cleanups from Aaron Lu, Hanjun Guo, Kuppuswamy Sathyanarayanan, Lan Tianyu, Sachin Kamat, Tang Chen, Toshi Kani, and Wei Yongjun. 9) cpufreq ondemand governor target frequency selection change to reduce oscillations between min and max frequencies (essentially, it causes the governor to choose target frequencies proportional to load) from Stratos Karafotis. 10) cpufreq fixes allowing sysfs attributes file permissions to be preserved over suspend/resume cycles Srivatsa S Bhat. 11) Removal of Device Tree parsing for CPU device nodes from multiple cpufreq drivers that required some changes related to of_get_cpu_node() to be made in a few architectures and in the driver core. From Sudeep KarkadaNagesha. 12) cpufreq core fixes and cleanups related to mutual exclusion and driver module references from Viresh Kumar, Lukasz Majewski and Rafael J Wysocki. 13) Assorted cpufreq fixes and cleanups from Amit Daniel Kachhap, Bartlomiej Zolnierkiewicz, Hanjun Guo, Jingoo Han, Joseph Lo, Julia Lawall, Li Zhong, Mark Brown, Sascha Hauer, Stephen Boyd, Stratos Karafotis, and Viresh Kumar. 14) Fixes to prevent race conditions in coupled cpuidle from happening from Colin Cross. 15) cpuidle core fixes and cleanups from Daniel Lezcano and Tuukka Tikkanen. 16) Assorted cpuidle fixes and cleanups from Daniel Lezcano, Geert Uytterhoeven, Jingoo Han, Julia Lawall, Linus Walleij, and Sahara. 17) System sleep tracing changes from Todd E Brandt and Shuah Khan. 18) PNP subsystem conversion to using struct dev_pm_ops for power management from Shuah Khan. * tag 'pm+acpi-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (217 commits) cpufreq: Don't use smp_processor_id() in preemptible context cpuidle: coupled: fix race condition between pokes and safe state cpuidle: coupled: abort idle if pokes are pending cpuidle: coupled: disable interrupts after entering safe state ACPI / hotplug: Remove containers synchronously driver core / ACPI: Avoid device hot remove locking issues cpufreq: governor: Fix typos in comments cpufreq: governors: Remove duplicate check of target freq in supported range cpufreq: Fix timer/workqueue corruption due to double queueing ACPI / EC: Add ASUSTEK L4R to quirk list in order to validate ECDT ACPI / thermal: Add check of "_TZD" availability and evaluating result cpufreq: imx6q: Fix clock enable balance ACPI: blacklist win8 OSI for buggy laptops cpufreq: tegra: fix the wrong clock name cpuidle: Change struct menu_device field types cpuidle: Add a comment warning about possible overflow cpuidle: Fix variable domains in get_typical_interval() cpuidle: Fix menu_device->intervals type cpuidle: CodingStyle: Break up multiple assignments on single line cpuidle: Check called function parameter in get_typical_interval() ...

of: call __of_parse_phandle_with_args from of_parse_phandle

2013-08-29T20:40:23Z

The simplest case of __of_parse_phandle_with_args() now implements the semantics of of_parse_phandle(). Rewrite of_parse_phandle() to call __of_parse_phandle_with_args() rather than open-coding the simple case. Optimize __of_parse_phandle_with_args() so that it doesn't call of_find_node_by_phandle() except when it's strictly needed. This avoids introducing too much overhead when replacing of_parse_phandle(). Signed-off-by: Stephen Warren Acked-by: Mark Rutland Signed-off-by: Grant Likely

of: introduce of_parse_phandle_with_fixed_args

2013-08-29T20:40:22Z

This is identical to of_parse_phandle_with_args(), except that the number of argument cells is fixed, rather than being parsed out of the node referenced by each phandle. Signed-off-by: Stephen Warren Acked-by: Mark Rutland Signed-off-by: Grant Likely

of: move of_parse_phandle()

2013-08-29T20:40:22Z

Move of_parse_phandle() after __of_parse_phandle_with_args(), since a future patch will call __of_parse_phandle_with_args() from of_parse_phandle(). Moving the function avoids adding a prototype. Doing the move separately highlights the code changes separately. Signed-off-by: Stephen Warren Acked-by: Mark Rutland Signed-off-by: Grant Likely

of: move documentation of of_parse_phandle_with_args

2013-08-29T20:40:21Z

Commit bd69f73 "of: Create function for counting number of phandles in a property" renamed of_parse_phandle_with_args(), and created a wrapper function that implemented the original name. However, the documentation of the original function was not moved, leaving it apparently documenting the newly renamed function. Move the documentation so that it is adjacent to the function it documents. Signed-off-by: Stephen Warren Acked-by: Mark Rutland Signed-off-by: Grant Likely

of: Fix missing memory initialization on FDT unflattening

2013-08-29T20:40:10Z

Any calls to dt_alloc() need to be zeroed. This is a temporary fix, but the allocation function itself needs to zero memory before returning it. This is a follow up to patch 9e4012752, "of: fdt: fix memory initialization for expanded DT" which fixed one call site but missed another. Signed-off-by: Grant Likely Acked-by: Wladislav Wiebe Cc: stable@vger.kernel.org

of: move of_get_cpu_node implementation to DT core library

2013-08-21T09:24:44Z

This patch moves the generalized implementation of of_get_cpu_node from PowerPC to DT core library, thereby adding support for retrieving cpu node for a given logical cpu index on any architecture. The CPU subsystem can now use this function to assign of_node in the cpu device while registering CPUs. It is recommended to use these helper function only in pre-SMP/early initialisation stages to retrieve CPU device node pointers in logical ordering. Once the cpu devices are registered, it can be retrieved easily from cpu device of_node which avoids unnecessary parsing and matching. Cc: Benjamin Herrenschmidt Cc: Grant Likely Acked-by: Rob Herring Signed-off-by: Sudeep KarkadaNagesha

OF: Add helper for matching against linux,stdout-path

2013-08-12T18:23:53Z

devicetrees may have a linux,stdout-path property in the chosen node describing the console device. This adds a helper function to match a device against this property so a driver can call add_preferred_console for a matching device. Signed-off-by: Sascha Hauer Acked-by: Rob Herring Signed-off-by: Greg Kroah-Hartman