linux/drivers/base, branch v3.19

Merge branches 'pm-domains', 'powercap' and 'pm-tools'

2014-12-29T20:24:00Z

* pm-domains: PM / Domains: Export of_genpd_get_from_provider function * powercap: powercap / RAPL: add IDs for future Xeon CPUs * pm-tools: tools / cpupower: Fix no idle state information return value tools / cpupower: Correctly detect if running as root

Merge branch 'pm-opp'

2014-12-29T20:23:13Z

* pm-opp: PM / OPP: take RCU lock in dev_pm_opp_get_opp_count PM / OPP: fix warning in of_free_opp_table() PM / OPP: add some lockdep annotations

Merge tag 'pm+acpi-3.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2014-12-19T04:28:33Z

Pull more ACPI and power management updates from Rafael Wysocki: "These are regression fixes (leds-gpio, ACPI backlight driver, operating performance points library, ACPI device enumeration messages, cpupower tool), other bug fixes (ACPI EC driver, ACPI device PM), some cleanups in the operating performance points (OPP) framework, continuation of CONFIG_PM_RUNTIME elimination, a couple of minor intel_pstate driver changes, a new MAINTAINERS entry for it and an ACPI fan driver change needed for better support of thermal management in user space. Specifics: - Fix a regression in leds-gpio introduced by a recent commit that inadvertently changed the name of one of the properties used by the driver (Fabio Estevam). - Fix a regression in the ACPI backlight driver introduced by a recent fix that missed one special case that had to be taken into account (Aaron Lu). - Drop the level of some new kernel messages from the ACPI core introduced by a recent commit to KERN_DEBUG which they should have used from the start and drop some other unuseful KERN_ERR messages printed by ACPI (Rafael J Wysocki). - Revert an incorrect commit modifying the cpupower tool (Prarit Bhargava). - Fix two regressions introduced by recent commits in the OPP library and clean up some existing minor issues in that code (Viresh Kumar). - Continue to replace CONFIG_PM_RUNTIME with CONFIG_PM throughout the tree (or drop it where that can be done) in order to make it possible to eliminate CONFIG_PM_RUNTIME (Rafael J Wysocki, Ulf Hansson, Ludovic Desroches). There will be one more "CONFIG_PM_RUNTIME removal" batch after this one, because some new uses of it have been introduced during the current merge window, but that should be sufficient to finally get rid of it. - Make the ACPI EC driver more robust against race conditions related to GPE handler installation failures (Lv Zheng). - Prevent the ACPI device PM core code from attempting to disable GPEs that it has not enabled which confuses ACPICA and makes it report errors unnecessarily (Rafael J Wysocki). - Add a "force" command line switch to the intel_pstate driver to make it possible to override the blacklisting of some systems in that driver if needed (Ethan Zhao). - Improve intel_pstate code documentation and add a MAINTAINERS entry for it (Kristen Carlson Accardi). - Make the ACPI fan driver create cooling device interfaces witn names that reflect the IDs of the ACPI device objects they are associated with, except for "generic" ACPI fans (PNP ID "PNP0C0B"). That's necessary for user space thermal management tools to be able to connect the fans with the parts of the system they are supposed to be cooling properly. From Srinivas Pandruvada" * tag 'pm+acpi-3.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits) MAINTAINERS: add entry for intel_pstate ACPI / video: update the skip case for acpi_video_device_in_dod() power / PM: Eliminate CONFIG_PM_RUNTIME NFC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM SCSI / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM ACPI / EC: Fix unexpected ec_remove_handlers() invocations Revert "tools: cpupower: fix return checks for sysfs_get_idlestate_count()" tracing / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM x86 / PM: Replace CONFIG_PM_RUNTIME in io_apic.c PM: Remove the SET_PM_RUNTIME_PM_OPS() macro mmc: atmel-mci: use SET_RUNTIME_PM_OPS() macro PM / Kconfig: Replace PM_RUNTIME with PM in dependencies ARM / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM sound / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM phy / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM video / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM tty / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM spi: Replace CONFIG_PM_RUNTIME with CONFIG_PM ACPI / PM: Do not disable wakeup GPEs that have not been enabled ACPI / utils: Drop error messages from acpi_evaluate_reference() ...

Merge branches 'pm-opp', 'pm-cpufreq' and 'pm-tools'

2014-12-18T17:44:53Z

* pm-opp: PM / OPP: do error handling at the bottom of dev_pm_opp_add_dynamic() PM / OPP: handle allocation of device_opp in a separate routine PM / OPP: reuse find_device_opp() instead of duplicating code PM / OPP: Staticize __dev_pm_opp_remove() PM / OPP: replace kfree with kfree_rcu while freeing 'struct device_opp' * pm-cpufreq: MAINTAINERS: add entry for intel_pstate intel_pstate: Add a few comments intel_pstate: add kernel parameter to force loading * pm-tools: Revert "tools: cpupower: fix return checks for sysfs_get_idlestate_count()"

PM / OPP: take RCU lock in dev_pm_opp_get_opp_count

2014-12-18T00:42:49Z

A lot of callers are missing the fact that dev_pm_opp_get_opp_count needs to be called under RCU lock. Given that RCU locks can safely be nested, instead of providing *_locked() API, let's take RCU lock inside dev_pm_opp_get_opp_count() and leave callers as is. Signed-off-by: Dmitry Torokhov Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki

PM / OPP: fix warning in of_free_opp_table()

2014-12-18T00:42:49Z

Not having OPP defined for a device is not a crime, we should not splat warning in this case. Also, it seems that we are ready to accept invalid dev (find_device_opp will return ERR_PTR(-EINVAL) then) so let's not crash in dev_name() in such case. Signed-off-by: Dmitry Torokhov Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki

PM / OPP: add some lockdep annotations

2014-12-18T00:42:49Z

Certain OPP APIs need to be called under RCU lock; let's add a few rcu_lockdep_assert() calls to warn about potential misuse. Signed-off-by: Dmitry Torokhov Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki

PM / Domains: Export of_genpd_get_from_provider function

2014-12-17T01:33:34Z

This function looks up a PM domain form the provider. This will be useful to add parent/child domain relationship from the SoC specific code. The caller of the function must make sure that PM domain provider is already registered. Reviewed-by: Ulf Hansson Signed-off-by: Amit Daniel Kachhap Signed-off-by: Rafael J. Wysocki

Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2014-12-15T00:10:09Z

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__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 ...

memory-hotplug: remove redundant call of page_to_pfn

2014-12-13T20:42:47Z

This is just a small optimization. The start_pfn can be obtained directly by phys_index << PFN_SECTION_SHIFT. So the call of page_to_pfn() is redundant and remove it. Signed-off-by: Zhang Zhen Acked-by: Yasuaki Ishimatsu Acked-by: David Rientjes Cc: Dave Hansen Cc: Wang Nan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds