[GIT PULL] Power management and ACPI updates for v4.4-rc1, part 2

From: Rafael J. Wysocki
Date: Wed Nov 11 2015 - 19:28:42 EST

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Hi Linus,

Please pull from

git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \
pm+acpi-4.4-rc1-2

to receive the second batch of power management and ACPI updates for
v4.4-rc1 with top-most commit f57ab32a843690fe7431ebb3a2f461e689a2e3c7

Merge branch 'pm-tools'

on top of commit 0d51ce9ca1116e8f4dc87cb51db8dd250327e9bb

Merge tag 'pm+acpi-4.4-rc1-1' of
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

The only new feature in this batch is support for the ACPI _CCA
device configuration object, which it a pre-requisite for future
ACPI PCI support on ARM64, but should not affect the other
architectures.

The rest is fixes and cleanups, mostly in cpufreq (including
intel_pstate), the Operating Performace Points (OPP) framework
and tools (cpupower and turbostat).

Specifics:

- Support for the ACPI _CCA configuration object intended to tell
the OS whether or not a bus master device supports hardware
managed cache coherency and a new set of functions to allow
drivers to check the cache coherency support for devices in a
platform firmware interface agnostic way (Suravee Suthikulpanit,
Jeremy Linton).

- ACPI backlight quirks for ESPRIMO Mobile M9410 and Dell XPS L421X
(Aaron Lu, Hans de Goede).

- Fixes for the arm_big_little and s5pv210-cpufreq cpufreq drivers
(Jon Medhurst, Nicolas Pitre).

- kfree()-related fixup for the recently introduced CPPC cpufreq
frontend (Markus Elfring).

- intel_pstate fix reducing kernel log noise on systems where
P-states are managed by hardware (Prarit Bhargava).

- intel_pstate maintainers information update (Srinivas Pandruvada).

- cpufreq core optimization related to the handling of delayed work
items used by governors (Viresh Kumar).

- Locking fixes and cleanups of the Operating Performance Points
(OPP) framework (Viresh Kumar).

- Generic power domains framework cleanups (Lina Iyer).

- cpupower tool updates (Jacob Tanenbaum, Sriram Raghunathan,
Thomas Renninger).

- turbostat tool updates (Len Brown).

Thanks!

PS
Please note that commit

50230713b639 'PCI: OF: Move of_pci_dma_configure() to pci_dma_configure()'

included here will conflict with commit

f81c11af617c 'of/pci: Add of_pci_check_probe_only to parse
"linux,pci-probe-only"'

in your tree and appended is a patch used by Stephen to resolve that conflict.

---------------

Aaron Lu (1):
ACPI / video: only register backlight for LCD device

Hans de Goede (1):
ACPI / video: Add a quirk to force acpi-video backlight on Dell XPS L421X

Jacob Tanenbaum (1):
cpupower: cpupower monitor reports uninitialized values for offline cpus

Jeremy Linton (1):
ACPI: Honor ACPI _CCA attribute setting

Jon Medhurst (1):
cpufreq: arm_big_little: fix frequency check when bL switcher is active

Len Brown (2):
tools/power turbostat: simplify Bzy_MHz calculation
tools/power turbostat: bugfix: print MAX_NON_TURBO_RATIO

Lina Iyer (2):
PM / Domains: Remove dev->driver check for runtime PM
PM / Domains: Allocate memory outside domain locks

Markus Elfring (1):
cpufreq: CPPC: Delete an unnecessary check before the function
call kfree()

Nicolas Pitre (1):
cpufreq: s5pv210-cpufreq: fix wrong do_div() usage

Prarit Bhargava (1):
intel_pstate: decrease number of "HWP enabled" messages

Srinivas Pandruvada (1):
MAINTAINERS: update for intel P-state driver

Sriram Raghunathan (1):
Creating a common structure initialization pattern for struct option

Suravee Suthikulpanit (8):
device property: Introducing enum dev_dma_attr
ACPI: Adding DMA Attribute APIs for ACPI Device
device property: Adding DMA Attribute APIs for Generic Devices
device property: ACPI: Make use of the new DMA Attribute APIs
device property: ACPI: Remove unused DMA APIs
of/pci: Fix pci_get_host_bridge_device leak
PCI: OF: Move of_pci_dma_configure() to pci_dma_configure()
PCI: ACPI: Add support for PCI device DMA coherency

Thomas Renninger (2):
cpupower: Remove debug message when using cpupower idle-set -D switch
cpupower: Enable disabled Cstates if they are below max latency

Viresh Kumar (8):
PM / OPP: Improve print messages with pr_fmt
PM / OPP: Rename routines specific to old bindings with _v1
PM / OPP: Parse all power-supply related bindings together
cpufreq: governor: Quit work-handlers early if governor is stopped
PM / OPP: Propagate error properly from dev_pm_opp_set_sharing_cpus()
PM / OPP: Protect updates to list_dev with mutex
PM / OPP: Hold dev_opp_list_lock for writers
PM / OPP: Add opp_rcu_lockdep_assert() to _find_device_opp()

---------------

MAINTAINERS | 3 +-
drivers/acpi/acpi_platform.c | 7 +-
drivers/acpi/acpi_video.c | 78 ++++++++++++++++++----
drivers/acpi/glue.c | 8 ++-
drivers/acpi/scan.c | 42 ++++++++++++
drivers/acpi/video_detect.c | 9 +++
drivers/base/power/domain.c | 21 +++---
drivers/base/power/opp/core.c | 44 ++++++++----
drivers/base/power/opp/cpu.c | 13 ++--
drivers/base/power/opp/opp.h | 3 +
drivers/base/property.c | 32 ++++++---
drivers/cpufreq/arm_big_little.c | 22 +++---
drivers/cpufreq/cppc_cpufreq.c | 3 +-
drivers/cpufreq/cpufreq_governor.c | 33 ++++++---
drivers/cpufreq/intel_pstate.c | 10 +--
drivers/cpufreq/s5pv210-cpufreq.c | 4 +-
drivers/crypto/ccp/ccp-platform.c | 15 +++--
drivers/net/ethernet/amd/xgbe/xgbe-main.c | 8 ++-
drivers/of/of_pci.c | 20 ------
drivers/pci/probe.c | 32 ++++++++-
include/acpi/acpi_bus.h | 36 +---------
include/linux/acpi.h | 7 +-
include/linux/of_pci.h | 3 -
include/linux/property.h | 10 ++-
tools/power/cpupower/debug/i386/dump_psb.c | 2 +-
tools/power/cpupower/man/cpupower-idle-set.1 | 4 +-
tools/power/cpupower/utils/cpufreq-info.c | 30 ++++-----
tools/power/cpupower/utils/cpufreq-set.c | 10 +--
tools/power/cpupower/utils/cpuidle-info.c | 4 +-
tools/power/cpupower/utils/cpuidle-set.c | 33 ++++-----
tools/power/cpupower/utils/cpupower-info.c | 4 +-
tools/power/cpupower/utils/cpupower-set.c | 2 +-
tools/power/cpupower/utils/helpers/topology.c | 23 ++++---
.../cpupower/utils/idle_monitor/cpupower-monitor.c | 9 ++-
tools/power/x86/turbostat/turbostat.c | 30 +++++----
35 files changed, 405 insertions(+), 209 deletions(-)

---------------

diff --cc drivers/of/of_pci.c
index ff27177f49ed,b66ee4ebf650..000000000000
--- a/drivers/of/of_pci.c
+++ b/drivers/of/of_pci.c
@@@ -118,51 -117,6 +118,31 @@@ int of_get_pci_domain_nr(struct device_
}
EXPORT_SYMBOL_GPL(of_get_pci_domain_nr);

+/**
+ * of_pci_check_probe_only - Setup probe only mode if linux,pci-probe-only
+ * is present and valid
+ */
+void of_pci_check_probe_only(void)
+{
+ u32 val;
+ int ret;
+
+ ret = of_property_read_u32(of_chosen, "linux,pci-probe-only", &val);
+ if (ret) {
+ if (ret == -ENODATA || ret == -EOVERFLOW)
+ pr_warn("linux,pci-probe-only without valid value, ignoring\n");
+ return;
+ }
+
+ if (val)
+ pci_add_flags(PCI_PROBE_ONLY);
+ else
+ pci_clear_flags(PCI_PROBE_ONLY);
+
+ pr_info("PCI: PROBE_ONLY %sabled\n", val ? "en" : "dis");
+}
+EXPORT_SYMBOL_GPL(of_pci_check_probe_only);
+
- /**
- * of_pci_dma_configure - Setup DMA configuration
- * @dev: ptr to pci_dev struct of the PCI device
- *
- * Function to update PCI devices's DMA configuration using the same
- * info from the OF node of host bridge's parent (if any).
- */
- void of_pci_dma_configure(struct pci_dev *pci_dev)
- {
- struct device *dev = &pci_dev->dev;
- struct device *bridge = pci_get_host_bridge_device(pci_dev);
-
- if (!bridge->parent)
- return;
-
- of_dma_configure(dev, bridge->parent->of_node);
- pci_put_host_bridge_device(bridge);
- }
- EXPORT_SYMBOL_GPL(of_pci_dma_configure);
-
#if defined(CONFIG_OF_ADDRESS)
/**
* of_pci_get_host_bridge_resources - Parse PCI host bridge resources from DT
diff --cc include/linux/of_pci.h
index 38c0533a3359,ce0e5abeb454..000000000000
--- a/include/linux/of_pci.h
+++ b/include/linux/of_pci.h
@@@ -16,8 -16,6 +16,7 @@@ int of_pci_get_devfn(struct device_nod
int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
int of_get_pci_domain_nr(struct device_node *node);
- void of_pci_dma_configure(struct pci_dev *pci_dev);
+void of_pci_check_probe_only(void);
#else
static inline int of_irq_parse_pci(const struct pci_dev *pdev,
struct of_phandle_args *out_irq)
{
@@@ -52,10 -50,6 +51,8 @@@ of_get_pci_domain_nr(struct device_nod
{
return -1;
}
+
- static inline void of_pci_dma_configure(struct pci_dev *pci_dev) { }
-
+static inline void of_pci_check_probe_only(void) { }
#endif

#if defined(CONFIG_OF_ADDRESS)
--
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Next message: Krzysztof Kozlowski: "Re: [PATCH v7 1/4] Documentation: dt-bindings: Describe SROMc configuration"
Previous message: Doug Anderson: "Re: [RFC] usb: dwc2: hcd: fix split schedule issue"
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