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2016-05-28remove lots of IS_ERR_VALUE abusesArnd Bergmann1-11/+11
Most users of IS_ERR_VALUE() in the kernel are wrong, as they pass an 'int' into a function that takes an 'unsigned long' argument. This happens to work because the type is sign-extended on 64-bit architectures before it gets converted into an unsigned type. However, anything that passes an 'unsigned short' or 'unsigned int' argument into IS_ERR_VALUE() is guaranteed to be broken, as are 8-bit integers and types that are wider than 'unsigned long'. Andrzej Hajda has already fixed a lot of the worst abusers that were causing actual bugs, but it would be nice to prevent any users that are not passing 'unsigned long' arguments. This patch changes all users of IS_ERR_VALUE() that I could find on 32-bit ARM randconfig builds and x86 allmodconfig. For the moment, this doesn't change the definition of IS_ERR_VALUE() because there are probably still architecture specific users elsewhere. Almost all the warnings I got are for files that are better off using 'if (err)' or 'if (err < 0)'. The only legitimate user I could find that we get a warning for is the (32-bit only) freescale fman driver, so I did not remove the IS_ERR_VALUE() there but changed the type to 'unsigned long'. For 9pfs, I just worked around one user whose calling conventions are so obscure that I did not dare change the behavior. I was using this definition for testing: #define IS_ERR_VALUE(x) ((unsigned long*)NULL == (typeof (x)*)NULL && \ unlikely((unsigned long long)(x) >= (unsigned long long)(typeof(x))-MAX_ERRNO)) which ends up making all 16-bit or wider types work correctly with the most plausible interpretation of what IS_ERR_VALUE() was supposed to return according to its users, but also causes a compile-time warning for any users that do not pass an 'unsigned long' argument. I suggested this approach earlier this year, but back then we ended up deciding to just fix the users that are obviously broken. After the initial warning that caused me to get involved in the discussion (fs/gfs2/dir.c) showed up again in the mainline kernel, Linus asked me to send the whole thing again. [ Updated the 9p parts as per Al Viro - Linus ] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lkml.org/lkml/2016/1/7/363 Link: https://lkml.org/lkml/2016/5/27/486 Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> # For nvmem part Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26Merge tag 'mmc-v4.7-rc1' of git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds1-0/+1
Pull MMC fixes from Ulf Hansson: "Here are some mmc fixes intended for v4.7 rc1. They are based on a commit earlier in the merge window and have been tested in linux-next for a while. MMC core: - Prevent re-tuning while serving requests for RPMB partitions - Extend timeout for long read time quirk to support more eMMCs MMC host: - sdhci-acpi: Ensure connected devices are powered when probing - sdhci-pci|acpi: Remove unreliable MMC_CAP_BUS_WIDTH_TEST for Intel HWs - dw_mmc: Correct the assigning of max_blk_size - dw_mmc-rockchip: Allow RPMB partitions to be created - dw_mmc-rockchip: Set the drive phase properly" * tag 'mmc-v4.7-rc1' of git://git.linaro.org/people/ulf.hansson/mmc: mmc: sdhci-acpi: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers mmc: sdhci-pci: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers mmc: longer timeout for long read time quirk mmc: dw_mmc: rockchip: Set the drive phase properly mmc: dw_mmc: fix the wrong max_blk_size mmc: dw_mmc-rockchip: add MMC_CAP_CMD23 capabilities mmc: sdhci-acpi: Ensure connected devices are powered when probing ACPI / PM: Export acpi_device_fix_up_power() mmc: block: Pause re-tuning while switched to the RPMB partition mmc: block: Always switch back to main area after RPMB access mmc: core: Add a facility to "pause" re-tuning
2016-05-26Merge tag 'acpi-4.7-rc1-more' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI fix from Rafael Wysocki: "Additional ACPI update for v4.7-rc1 Just one fix for incorrect async_synchronize_cookie() usage in the ACPI battery driver (Chris Wilson)" * tag 'acpi-4.7-rc1-more' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / battery: Correctly serialise with the pending async probe
2016-05-25Merge branch 'acpi-battery'Rafael J. Wysocki1-1/+1
* acpi-battery: ACPI / battery: Correctly serialise with the pending async probe
2016-05-23Merge tag 'libnvdimm-for-4.7' of ↵Linus Torvalds3-38/+279
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "The bulk of this update was stabilized before the merge window and appeared in -next. The "device dax" implementation was revised this week in response to review feedback, and to address failures detected by the recently expanded ndctl unit test suite. Not included in this pull request are two dax topic branches (dax error handling, and dax radix-tree locking). These topics were deferred to get a few more days of -next integration testing, and to coordinate a branch baseline with Ted and the ext4 tree. Vishal and Ross will send the error handling and locking topics respectively in the next few days. This branch has received a positive build result from the kbuild robot across 226 configs. Summary: - Device DAX for persistent memory: Device DAX is the device-centric analogue of Filesystem DAX (CONFIG_FS_DAX). It allows memory ranges to be allocated and mapped without need of an intervening file system. Device DAX is strict, precise and predictable. Specifically this interface: a) Guarantees fault granularity with respect to a given page size (pte, pmd, or pud) set at configuration time. b) Enforces deterministic behavior by being strict about what fault scenarios are supported. Persistent memory is the first target, but the mechanism is also targeted for exclusive allocations of performance/feature differentiated memory ranges. - Support for the HPE DSM (device specific method) command formats. This enables management of these first generation devices until a unified DSM specification materializes. - Further ACPI 6.1 compliance with support for the common dimm identifier format. - Various fixes and cleanups across the subsystem" * tag 'libnvdimm-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (40 commits) libnvdimm, dax: fix deletion libnvdimm, dax: fix alignment validation libnvdimm, dax: autodetect support libnvdimm: release ida resources Revert "block: enable dax for raw block devices" /dev/dax, core: file operations and dax-mmap /dev/dax, pmem: direct access to persistent memory libnvdimm: stop requiring a driver ->remove() method libnvdimm, dax: record the specified alignment of a dax-device instance libnvdimm, dax: reserve space to store labels for device-dax libnvdimm, dax: introduce device-dax infrastructure nfit: add sysfs dimm 'family' and 'dsm_mask' attributes tools/testing/nvdimm: ND_CMD_CALL support nfit: disable vendor specific commands nfit: export subsystem ids as attributes nfit: fix format interface code byte order per ACPI6.1 nfit, libnvdimm: limited/whitelisted dimm command marshaling mechanism nfit, libnvdimm: clarify "commands" vs "_DSMs" libnvdimm: increase max envelope size for ioctl acpi/nfit: Add sysfs "id" for NVDIMM ID ...
2016-05-21ACPI / battery: Correctly serialise with the pending async probeChris Wilson1-1/+1
async_synchronize_cookie() only serialises all tasks up to the specified cookie, and importantly does not wait for the task corresponding with the cookie. [This is so that it can be trivially used from inside the async_func_t in order to serialise with all preceding tasks.] In order to serialise with acpi_battery_init_async() we need to compensate and pass in the next cookie instead. The impact today is zero since performing an async_schedule() from inside a module init function will trigger an async_synchronize_full() prior to the module loader's completion. However, if the probe was moved to its own unregistered async_domain, then the async_synchronize_cookie would be replaced with an async_synchronize_full_domain. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-20ACPI / PM: Export acpi_device_fix_up_power()Ulf Hansson1-0/+1
Drivers that needs acpi_device_fix_up_power(), allow them to be built as modules by exporting this function. Cc: <stable@vger.kernel.org> # 4.5+ Tested-by: Laszlo Fiat <laszlo.fiat@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-18Merge branch 'for-4.7/acpi6.1' into libnvdimm-for-nextDan Williams48-561/+876
2016-05-18Merge branch 'for-4.7/dsm' into libnvdimm-for-nextDan Williams3-23/+144
2016-05-18Merge branch 'for-4.7/libnvdimm' into libnvdimm-for-nextDan Williams2-4/+71
2016-05-16Merge branches 'acpi-pci', 'acpi-misc' and 'acpi-tools'Rafael J. Wysocki5-84/+108
* acpi-pci: ACPI,PCI,IRQ: remove SCI penalize function ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init() ACPI,PCI,IRQ: reduce static IRQ array size to 16 ACPI,PCI,IRQ: reduce resource requirements * acpi-misc: ACPI / sysfs: fix error code in get_status() ACPI / device_sysfs: Clean up checkpatch errors ACPI / device_sysfs: Change _SUN and _STA show functions error return to EIO ACPI / device_sysfs: Add sysfs support for _HRV hardware revision arm64: defconfig: Enable ACPI ACPI / ARM64: Remove EXPERT dependency for ACPI on ARM64 ACPI / ARM64: Don't enable ACPI by default on ARM64 acer-wmi: Use acpi_dev_found() eeepc-wmi: Use acpi_dev_found() ACPI / utils: Rename acpi_dev_present() * acpi-tools: tools/power/acpi: close file only if it is open
2016-05-16Merge branches 'acpi-numa', 'acpi-tables' and 'acpi-osi'Rafael J. Wysocki8-704/+862
* acpi-numa: ACPI / SRAT: fix SRAT parsing order with both LAPIC and X2APIC present * acpi-tables: ACPI / tables: Fix DSDT override mechanism ACPI / tables: Convert initrd table override to table upgrade mechanism ACPI / x86: Cleanup initrd related code ACPI / tables: Move table override mechanisms to tables.c * acpi-osi: ACPI / osi: Collect _OSI handling into one single file ACPI / osi: Cleanup coding style issues before creating a separate OSI source file ACPI / osi: Cleanup OSI handling code to use bool ACPI / osi: Fix default _OSI(Darwin) support ACPI / osi: Add acpi_osi=!! to allow reverting acpi_osi=! ACPI / osi: Cleanup _OSI("Linux") related code before introducing new support ACPI / osi: Fix an issue that acpi_osi=!* cannot disable ACPICA internal strings Conflicts: drivers/acpi/internal.h
2016-05-16Merge branches 'acpi-drivers', 'acpi-pm', 'acpi-ec' and 'acpi-video'Rafael J. Wysocki9-189/+344
* acpi-drivers: ACPI / GED: make evged.c explicitly non-modular ACPI / amba: Remove CLK_IS_ROOT ACPI / APD: Remove CLK_IS_ROOT ACPI: implement Generic Event Device * acpi-pm: ACPI / PM: Introduce efi poweroff for HW-full platforms without _S5 * acpi-ec: ACPI 2.0 / AML: Improve module level execution by moving the If/Else/While execution to per-table basis ACPI 2.0 / ECDT: Enable correct ECDT initialization order ACPI 2.0 / ECDT: Remove early namespace reference from EC ACPI 2.0 / ECDT: Split EC_FLAGS_HANDLERS_INSTALLED * acpi-video: ACPI / video: mark acpi_video_get_levels() inline Thermal / ACPI / video: add INT3406 thermal driver ACPI/video: export acpi_video_get_levels video / backlight: remove the backlight_device_registered API video / backlight: add two APIs for drivers to use
2016-05-16Merge branch 'acpica'Rafael J. Wysocki112-1023/+1663
* acpica: (41 commits) ACPICA: Update version to 20160422 ACPICA: Move all ASCII utilities to a common file ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for acpi_hw_write() ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support in acpi_hw_read() ACPICA: Executer: Introduce a set of macros to handle bit width mask generation ACPICA: Hardware: Add optimized access bit width support ACPICA: Utilities: Add ACPI_IS_ALIGNED() macro ACPICA: Renamed some #defined flag constants for clarity ACPICA: ACPI 6.0, tools/iasl: Add support for new resource descriptors ACPICA: ACPI 6.0: Update _BIX support for new package element ACPICA: ACPI 6.1: Support for new PCCT subtable ACPICA: Refactor evaluate_object to reduce nesting ACPICA: Divergence: remove unwanted spaces for typedef ACPICA: Update version to 20160318 ACPICA: Namespace: Reorder \_SB._INI to make sure it is evaluated before _REG evaluations ACPICA: Events: Fix an issue that _REG association can happen before namespace is initialized ACPICA: Tables: Fix wrong MLC condition for dynamic table loading ACPICA: Interpreter: Fix wrong conditions for acpi_ev_install_region_handlers() invocation ACPICA: Hardware: Enhance acpi_hw_validate_register() with access_width/bit_offset awareness Utilities: Fix missing parentheses in ACPI_GET_BITS()/ACPI_SET_BITS() ...
2016-05-09ACPI / GED: make evged.c explicitly non-modularPaul Gortmaker1-3/+1
The Makefile/Kconfig currently controlling compilation of this code is: Makefile:acpi-$(CONFIG_ACPI_REDUCED_HARDWARE_ONLY) += evged.o drivers/acpi/Kconfig:config ACPI_REDUCED_HARDWARE_ONLY drivers/acpi/Kconfig: bool "Hardware-reduced ACPI support only" if EXPERT ...meaning that it currently is not being built as a module by anyone. Lets remove the couple traces of modularity so that when reading the code there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. The file wasn't explicitly including the module.h file but it did already have init.h so, unlike similar changes, this one has no header changes at all. We also delete the MODULE_LICENSE tag since all that information is already contained at the top of the file in the comments. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-06Merge tag 'pm+acpi-4.6-rc7' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management and ACPI fixes from Rafael Wysocki: "Fixes for problems introduced or discovered recently (intel_pstate, sti-cpufreq, ARM64 cpuidle, Operating Performance Points framework, generic device properties framework) and one fix for a hotplug-related deadlock in ACPICA that's been there forever, but is nasty enough. Specifics: - Fix for a recent regression in the intel_pstate driver causing it to fail to restore the HWP (HW-managed P-states) configuration of the boot CPU after suspend-to-RAM (Rafael Wysocki). - Fix for two recent regressions in the intel_pstate driver, one that can trigger a divide by zero if the driver is accessed via sysfs before it manages to take the first sample and one causing it to fail to update a structure field used in a trace point, so the information coming from it is less useful (Rafael Wysocki). - Fix for a problem in the sti-cpufreq driver introduced during the 4.5 cycle that causes it to break CPU PM in multi-platform kernels by registering cpufreq-dt (which subsequently doesn't work) unconditionally and preventing the driver that would actually work from registering (Sudeep Holla). - Stable-candidate fix for an ARM64 cpuidle issue causing idle state usage counters to be incorrectly updated for idle states that were not entered due to errors (James Morse). - Fix for a recently introduced issue in the OPP (Operating Performance Points) framework causing it to print bogus error messages for missing optional regulators (Viresh Kumar). - Fix for a recently introduced issue in the generic device properties framework that may cause it to attempt to dereferece and invalid pointer in some cases (Heikki Krogerus). - Fix for a deadlock in the ACPICA core that may be triggered by device (eg Thunderbolt) hotplug (Prarit Bhargava)" * tag 'pm+acpi-4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / OPP: Remove useless check ACPICA: Dispatcher: Update thread ID for recursive method calls intel_pstate: Fix intel_pstate_get() cpufreq: intel_pstate: Fix HWP on boot CPU after system resume cpufreq: st: enable selective initialization based on the platform ARM: cpuidle: Pass on arm_cpuidle_suspend()'s return value device property: Avoid potential dereferences of invalid pointers
2016-05-06ACPI / tables: Fix DSDT override mechanismRafael J. Wysocki2-4/+4
Commit 5ae74f2cc2f1 (ACPI / tables: Move table override mechanisms to tables.c) forgot to move the CONFIG_ACPI_CUSTOM_DSDT_FILE inclusion directive from osl.c to tables.c. Fix that. Fixes: 5ae74f2cc2f1 (ACPI / tables: Move table override mechanisms to tables.c) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Lv Zheng <lv.zheng@intel.com>
2016-05-06nfit: add sysfs dimm 'family' and 'dsm_mask' attributesDan Williams1-0/+26
Communicate the command format and supported functions to userspace tooling. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2016-05-06nfit: disable vendor specific commandsDan Williams1-4/+13
Module option to limit userspace to the publicly defined command set. For cases where private DIMM commands may be interfering with the kernel's handling of DIMM state this option can be set to block vendor specific commands. Cc: Jerry Hoemann <jerry.hoemann@hpe.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2016-05-06Merge back new ACPICA material for v4.7.Rafael J. Wysocki112-1023/+1663
2016-05-05ACPI / sysfs: fix error code in get_status()Dan Carpenter1-4/+3
The problem with ornamental, do-nothing gotos is that they lead to "forgot to set the error code" bugs. We should be returning -EINVAL here but we don't. It leads to an uninitalized variable in counter_show(): drivers/acpi/sysfs.c:603 counter_show() error: uninitialized symbol 'status'. Fixes: 1c8fce27e275 (ACPI: introduce drivers/acpi/sysfs.c) Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Move all ASCII utilities to a common fileBob Moore11-110/+160
ACPICA commit ba60e4500053010bf775d58f6f61febbdb94d817 New file is utascii.c Link: https://github.com/acpica/acpica/commit/ba60e450 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for ↵Lv Zheng1-9/+137
acpi_hw_write() ACPICA commit 48eea5e7993ccb7189bd63cd726e02adafee6057 This patch adds access_width/bit_offset support in acpi_hw_write(). Lv Zheng. Link: https://github.com/acpica/acpica/commit/48eea5e7 Link: https://bugs.acpica.org/show_bug.cgi?id=1240 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support in ↵Lv Zheng1-13/+62
acpi_hw_read() ACPICA commit 96ece052d4d073aae4f935f0ff0746646aea1174 ACPICA commit 3d8583a054e410f2ea4d73b48986facad9cfc0d4 This patch adds access_width/bit_offset support in acpi_hw_read(). This also enables GAS definition where bit_width is not a power of two. Lv Zheng. Link: https://github.com/acpica/acpica/commit/96ece052 Link: https://github.com/acpica/acpica/commit/3d8583a0 Link: https://bugs.acpica.org/show_bug.cgi?id=1240 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Executer: Introduce a set of macros to handle bit width mask generationLv Zheng2-10/+14
ACPICA commit c23034a3a09d5ed79f1827d51f43cfbccf68ab64 A regression was reported to the shift offset >= width of type. This patch fixes this issue. BZ 1270. This is a part of the fix because the order of the patches are modified for Linux upstream, containing the cleanups for the old code. Lv Zheng. Link: https://github.com/acpica/acpica/commit/c23034a3 Link: https://bugs.acpica.org/show_bug.cgi?id=1270 Reported-by: Sascha Wildner <swildner@gmail.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Hardware: Add optimized access bit width supportLv Zheng1-2/+47
ACPICA commit c49a751b4dae7baec1790748a2b4b6e8ab599f51 For Access Size = 0, it actually can use user expected access bit width. This patch implements this. Besides of the ACPICA upstream commit, this patch also includes a fix fixing the issue reported by the FreeBSD community. The old register descriptors are translated in acpi_tb_init_generic_address() with access_width being filled with 0. This breaks code in acpi_hw_get_access_bit_width() when the registers are 16-bit IO ports and their bit_width fields are filled with 16. The rapid fix is meant to make code written for acpi_hw_get_access_bit_width() regression safer before the issue is correctly fixed from acpi_tb_init_generic_address(). Reported by John Baldwin <jhb@freebsd.org>, fixed by Lv Zheng <lv.zheng@intel.com>, tested by Jung-uk Kim <jkim@freebsd.org>. Link: https://github.com/acpica/acpica/commit/c49a751b Reported-by: John Baldwin <jhb@freebsd.org> Tested-by Jung-uk Kim <jkim@freebsd.org>. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Utilities: Add ACPI_IS_ALIGNED() macroLv Zheng1-1/+2
This patch introduces ACPI_IS_ALIGNED() macro. Lv Zheng. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Renamed some #defined flag constants for clarityBob Moore2-16/+16
ACPICA commit 438905b205e64e742f9670a0970419c426264831 Expanded a couple of cryptic names. Link: https://github.com/acpica/acpica/commit/438905b2 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: ACPI 6.0, tools/iasl: Add support for new resource descriptorsBob Moore2-7/+23
ACPICA commit 5a0555ece4ba9917e5842b21d88469ae06b4e815 Adds full support for: i2c_serial_bus_v2 spi_serial_bus_v2 uart_serial_bus_v2 Compiler, Disassembler, Resource Manager, acpi_help. Link: https://github.com/acpica/acpica/commit/5a0555ec Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: ACPI 6.0: Update _BIX support for new package elementBob Moore2-2/+89
ACPICA commit 3451e6d49d37919c13ec2c0019a31534b0dfc0c0 One integer was added at the end of the _BIX method, and the version number was incremented. Link: https://github.com/acpica/acpica/commit/3451e6d4 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Refactor evaluate_object to reduce nestingBob Moore1-56/+55
ACPICA commit 599e9159f53565e4a3f3e67f6a03f81fcb10a4cf Original patch from hanjun.guo@linaro.org ACPICA BZ 1072. Link: https://github.com/acpica/acpica/commit/599e9159 Link: https://bugs.acpica.org/show_bug.cgi?id=1072 Original-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPICA: Divergence: remove unwanted spaces for typedefLv Zheng74-253/+252
ACPICA commit b2294cae776f5a66a7697414b21949d307e6856f This patch removes unwanted spaces for typedef. This solution doesn't cover function types. Note that the linuxize result of this commit is very giant and should have many conflicts against the current Linux upstream. Thus it is required to modify the linuxize result of this commit and the commits around it manually in order to have them merged to the Linux upstream. Since this is very costy, we should do this only once, and if we can't ensure to do this only once, we need to revert the Linux code to the wrong indentation result before merging the linuxize result of this commit. Lv Zheng. Link: https://github.com/acpica/acpica/commit/b2294cae Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI,PCI,IRQ: remove SCI penalize functionSinan Kaya1-4/+0
Removing the SCI penalize function as the penalty is now calculated on the fly. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init()Sinan Kaya1-36/+0
acpi_irq_get_penalty is now calculating the penalty on the fly now. No need to maintain global list of penalties or calculate them at the init time. Removing duplicate code in acpi_irq_penalty_init. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI,PCI,IRQ: reduce static IRQ array size to 16Sinan Kaya1-20/+20
Now that the supported number of PCI IRQs are no longer capped with 256, renaming the static array to support ISA IRQs only and removing the MAX_IRQS constant. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI,PCI,IRQ: reduce resource requirementsSinan Kaya1-29/+68
Code has been redesigned to calculate penalty requirements on the fly. This significantly simplifies the implementation and removes some of the init calls from x86 architecture. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / osi: Collect _OSI handling into one single fileLv Zheng5-470/+531
_OSI handling code grows giant and it's time to move them into one file. This patch collects all _OSI handling code into one single file. So that we only have the following functions to be used externally: early_acpi_osi_init(): Used by DMI detections; acpi_osi_init(): Used to initialize OSI command line settings and install Linux specific _OSI handler; acpi_osi_setup(): The API that should be used by the external quirks. acpi_osi_is_win8(): The API is used by the external drivers to determine if BIOS supports Win8. CONFIG_DMI is not useful as stub dmi_check_system() can make everything stub because of strip. No functional changes. Tested-by: Lukas Wunner <lukas@wunner.de> Tested-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / osi: Cleanup coding style issues before creating a separate OSI ↵Lv Zheng2-50/+36
source file This patch performs necessary cleanups before moving OSI support to another file. 1. Change printk into pr_xxx 2. Do not initialize values to 0 3. Do not append additional "return" at the end of the function 4. Remove useless comments which may easily break line breaking rule After fixing the coding style issues, rename functions to make them looking like acpi_osi_xxx. No functional changes. Tested-by: Lukas Wunner <lukas@wunner.de> Tested-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / osi: Cleanup OSI handling code to use boolLv Zheng2-25/+15
This patch changes "int/unsigned int" to "bool" to simplify the code. Tested-by: Lukas Wunner <lukas@wunner.de> Tested-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / osi: Fix default _OSI(Darwin) supportChen Yu2-7/+74
The following commit always reports positive value when Apple hardware queries _OSI("Darwin"): Commit: 7bc5a2bad0b8d9d1ac9f7b8b33150e4ddf197334 Subject: ACPI: Support _OSI("Darwin") correctly However since this implementation places the judgement in runtime, it breaks acpi_osi=!Darwin and cannot return unsupported for _OSI("WinXXX") invoked before invoking _OSI("Darwin"). This patch fixes the issues by reverting the wrong support and implementing the default behavior of _OSI("Darwin")/_OSI("WinXXX") on Apple hardware via DMI matching. Fixes: 7bc5a2bad0b8 (ACPI: Support _OSI("Darwin") correctly) Link: https://bugzilla.kernel.org/show_bug.cgi?id=92111 Reported-and-tested-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / osi: Add acpi_osi=!! to allow reverting acpi_osi=!Lv Zheng1-0/+3
This patch introduces acpi_osi=!! so that quirks may use it to revert acpi_osi=!. Tested-by: Lukas Wunner <lukas@wunner.de> Tested-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / osi: Cleanup _OSI("Linux") related code before introducing new supportLv Zheng1-20/+22
This patch cleans up OSI code in osl.c to make osi_linux work for OSI strings other than "Linux", so it can be re-used for other purposes. Tested-by: Lukas Wunner <lukas@wunner.de> Tested-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / osi: Fix an issue that acpi_osi=!* cannot disable ACPICA internal stringsLv Zheng1-5/+11
The order of the _OSI related functionalities is as follows: acpi_blacklisted() acpi_dmi_osi_linux() acpi_osi_setup() acpi_osi_setup() acpi_update_interfaces() if "!*" <<<<<<<<<<<<<<<<<<<<<<<< parse_args() __setup("acpi_osi=") acpi_osi_setup_linux() acpi_update_interfaces() if "!*" <<<<<<<<<<<<<<<<<<<<<<<< acpi_early_init() acpi_initialize_subsystem() acpi_ut_initialize_interfaces() ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ acpi_bus_init() acpi_os_initialize1() acpi_install_interface_handler(acpi_osi_handler) acpi_osi_setup_late() acpi_update_interfaces() for "!" >>>>>>>>>>>>>>>>>>>>>>>> acpi_osi_handler() Since acpi_osi_setup_linux() can override acpi_dmi_osi_linux(), the command line setting can override the DMI detection. That's why acpi_blacklisted() is put before __setup("acpi_osi="). Then we can notice the following wrong invocation order. There are acpi_update_interfaces() (marked by <<<<) calls invoked before acpi_ut_initialize_interfaces() (marked by ^^^^). This makes it impossible to use acpi_osi=!* correctly from OSI DMI table or from the command line. The use of acpi_osi=!* is meant to disable both ACPICA (acpi_gbl_supported_interfaces) and Linux specific strings (osi_setup_entries) while the ACPICA part should have stopped working because of the order issue. This patch fixes this issue by moving acpi_update_interfaces() to where it is invoked for acpi_osi=! (marked by >>>>) as this is ensured to be invoked after acpi_ut_initialize_interfaces() (marked by ^^^^). Linux specific strings are still handled in the original place in order to make the following command line working: acpi_osi=!* acpi_osi="Module Device". Note that since acpi_osi=!* is meant to further disable linux specific string comparing to the acpi_osi=!, there is no such use case in our bug fixing work and hence there is no one using acpi_osi=!* either from the command line or from the DMI quirks, this issue is just a theoretical issue. Fixes: 741d81280ad2 (ACPI: Add facility to remove all _OSI strings) Cc: 3.12+ <stable@vger.kernel.org> # 3.12+ Tested-by: Lukas Wunner <lukas@wunner.de> Tested-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / device_sysfs: Clean up checkpatch errorsBetty Dall1-7/+9
Cleaning up two existing checkpatch errors (and 2 warnings) in device_sysfs.c since the file is being changed. The change in acpi_device_setup_files() is changing spaces to a tab. Signed-off-by: Betty Dall <betty.dall@hpe.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / device_sysfs: Change _SUN and _STA show functions error return to EIOBetty Dall1-2/+2
The error return from a sysfs show function is passed up through the call chain and visible as the return from the read system call. The show functions for the _STA and _SUN object currently return -ENODEV. This patch changes the return to -EIO. ENODEV makes less sense since the "device' exists or there wouldn't be a sysfs file. Signed-off-by: Betty Dall <betty.dall@hpe.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI / device_sysfs: Add sysfs support for _HRV hardware revisionBetty Dall1-0/+24
The ACPI _HRV object on the device is used to supply Linux with the device's hardware revision. This is an optional object. Add sysfs support for the _HRV object if it exists on the device. This change allows users to easily find the hardware version of non-PCI hardware by looking at the sysfs 'hrv' file. It is most useful for non-PCI devices because lspci can list the hardware version for PCI devices. Signed-off-by: Betty Dall <betty.dall@hpe.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05ACPI/video: export acpi_video_get_levelsAaron Lu1-38/+45
The acpi_video_get_levels is useful for other drivers, i.e. the to-be-added int3406 thermal driver, so export it. Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05video / backlight: remove the backlight_device_registered APIAaron Lu1-1/+1
Since we will need the backlight_device_get_by_type API, we can use it instead of the backlight_device_registered API whenever necessary so remove the backlight_device_registered API. Signed-off-by: Aaron Lu <aaron.lu@intel.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-04ACPICA: Dispatcher: Update thread ID for recursive method callsPrarit Bhargava1-0/+3
ACPICA commit 7a3bd2d962f221809f25ddb826c9e551b916eb25 Set the mutex owner thread ID. Original patch from: Prarit Bhargava <prarit@redhat.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=115121 Link: https://github.com/acpica/acpica/commit/7a3bd2d9 Signed-off-by: Prarit Bhargava <prarit@redhat.com> Tested-by: Andy Lutomirski <luto@kernel.org> # On a Dell XPS 13 9350 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-02nfit: fix translation of command status resultsDan Williams1-1/+4
When transportation of the command completes successfully, it indicates that the 'status' result is valid. Fix the missed checking and translation of the status field at the end of acpi_nfit_ctl(). Otherwise, we fail to handle reported errors and assume commands complete successfully. Reported-by: Linda Knippers <linda.knippers@hpe.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>