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* ACPICA: exmutex: General cleanup, restructured some codeBob Moore2016-01-011-21/+59
| | | | | | | | | | | ACPICA commit c2a7d000b6be34313b1c50c8a718df16113f0f32 Should be no functional change. Link: https://github.com/acpica/acpica/commit/c2a7d000 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>
* ACPICA: Add "const" to some functions that return fixed stringsLABBE Corentin2016-01-014-25/+22Star
| | | | | | | | | | | | | | | ACPICA commit 28645f8a113f346c8db103a4f7565fcba88c746f Most of the "get_name" - style functions can return "const char *" with no ill side-effects. Original linux patch from LABBE Corentin <clabbe.montjoie@gmail.com> and backported to ACPICA. Link: https://github.com/acpica/acpica/commit/28645f8a Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com> 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>
* ACPICA: Fix SyncLevel support interaction with method auto-serializationDavid E. Box2016-01-011-2/+13
| | | | | | | | | | | | | | | ACPICA commit 253e3c03efc1a495d2aa61eee09ab1d0842a3dce The control method auto-serialization can interfere with existing ASL code that makes use of Mutex/Method SyncLevel support. This change makes the auto-serialization transparent to the SyncLevel support and management. David Box. Link: https://github.com/acpica/acpica/commit/253e3c03 Signed-off-by: David E. Box <david.e.box@linux.intel.com> 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>
* ACPICA: Debugger: reduce old external path formatLv Zheng2016-01-019-10/+12
| | | | | | | | | | | | | | | | | ACPICA commit 75c0da9e796bdf9bdd46d75f028a3e1779903214 In the error logs and debugger outputs, use new external path format that does not contain a trailing underscore. This patch takes care of acpi_ns_get_external_pathname() invocations, chaning them into acpi_ns_get_normalized_pathname(TRUE) where possible. Along with some error log fixes, the following debugger commands are fixed: resources, handlers, paths. Lv Zheng. Link: https://github.com/acpica/acpica/commit/75c0da9e 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>
* ACPICA: Namespace: Fix wrong error logLv Zheng2016-01-011-1/+1
| | | | | | | | | | | | | ACPICA commit 20228e39e125d92f9d80c6e07d3767b225d0536e The Info->Node in acpi_ns_init_one_device() may not be initialized. Even it is initialized, the redundant "._INI" can be seen for this log entry. This patch fixes this issue by using device_node instead. Lv Zheng. Link: https://github.com/acpica/acpica/commit/20228e39 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>
* ACPICA: acpi_get_sleep_type_data: Reduce warningsPrarit Bhargava2016-01-011-7/+17
| | | | | | | | | | | | | | | | | ACPICA commit 7bb77313091e52a846df4c9c2bea90be31bfb9d8 Eliminate warnings for "not found" _Sx errors, since these are optional. Original NOT_FOUND status is still returned. Original changes by Prarit Bhargava. ACPICA BZ 1208. Link: https://github.com/acpica/acpica/commit/7bb77313 Link: https://bugs.acpica.org/show_bug.cgi?id=1208 Signed-off-by: Prarit Bhargava <prarit@redhat.com> 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>
* ACPICA: Linuxize: reduce divergences for 20151218 releaseLv Zheng2016-01-0112-324/+324
| | | | | | | | | | | | | The patch reduces source code differences between the Linux kernel and the ACPICA upstream so that the linuxized ACPICA 20151218 release can be applied with reduced human intervention. The pscode.c has already been out of sync for months, and it becomes more and more difficult to merge pscode.c changes, so instead of update the affected lines of pscode.c, this patch synchronizes entire pscode.c file. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Merge branch 'acpi-debug' into acpicaRafael J. Wysocki2016-01-0115-202/+1187
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| * ACPI / debugger: Fix a redundant mutex unlock issue in acpi_aml_open()Lv Zheng2015-12-281-1/+2
| | | | | | | | | | | | | | | | | | Fix a double mutex_unlock() issue where acpi_initialize_debugger() is called with the mutex already unlocked. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: copy_to_user doesn't return errorsDan Carpenter2015-12-281-4/+6
| | | | | | | | | | | | | | | | | | | | The copy_to/from_user() functions don't return error codes, they return the number of bytes remaining. We had intended to return -EFUALT here. We actually have already checked access_ok() in an earlier function so I don't think these functions will fail but let's fix it anyway. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: remove some unneeded conditionsDan Carpenter2015-12-281-4/+0Star
| | | | | | | | | | | | | | | | | | | | "count" is unsigned so checking for less than zero here causes a static checker warning. And really it's better to let the access_ok() check fail if the user passes in a NULL "buf" pointer because -EFAULT is the correct error code. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: Fix an issue a flag is modified without lockingLv Zheng2015-12-281-1/+1
| | | | | | | | | | | | | | | | There is one line of code, executed out of locking due to rebase mistakes. This patch fixes this issue. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: Add module support for ACPI debuggerLv Zheng2015-12-155-39/+269
| | | | | | | | | | | | | | | | | | | | | | This patch converts AML debugger into a loadable module. Note that, it implements driver unloading at the level dependent on the module reference count. Which means if ACPI debugger is being used by a userspace program, "rmmod acpi_dbg" should result in failure. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: Add IO interface to access debugger functionalitiesLv Zheng2015-12-155-5/+835
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds /sys/kernel/debug/acpi/acpidbg, which can be used by userspace programs to access ACPICA debugger functionalities. Known issue: 1. IO flush support acpi_os_notify_command_complete() and acpi_os_wait_command_ready() can be used by acpi_dbg module to implement .flush() filesystem operation. While this patch doesn't go that far. It then becomes userspace tool's duty now to flush old commands before executing new batch mode commands. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Debugger: Fix runtime stub issues of ACPI_DEBUGGER_EXEC using ↵Lv Zheng2015-12-157-46/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | different stub mechanism ACPICA commit 11522d6b894054fc4d62dd4f9863ec151296b386 The ACPI_DEBUGGER_EXEC is a problem now when the debugger code is compiled but runtime disabled. They actually will get executed in this situation. Although such executions are harmless if we can correctly make acpi_db_single_step() a runtime stub, users may still do not want to see the debugger print messages logged into OSPMs' kernel logs when a debugger driver is not loaded to enable the debugger during runtime. This patch fixes this issue by introducing new stub mechanism instead of ACPI_DEBUGGER_EXEC. Lv Zheng. Link: https://github.com/acpica/acpica/commit/11522d6b Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Debugger: Convert some mechanisms to OSPM specificLv Zheng2015-12-155-146/+38Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following mechanisms are OSPM specific: 1. Redirect output destination to console: no file redirection will be needed by an in-kernel debugger, there is even no file can be accessed when the debugger is running in the kernel mode. 2. Output command prompts: programs other than acpiexec can have different prompt characters and the prompt characters may be implemented as a special character sequence to form a char device IO protocol. 3. Command ready/complete handshake: OSPM debugger may wait more conditions to implement OSPM specific semantics (for example, FIFO full/empty conditions for O_NONBLOCK or IO open/close conditions). Leaving such OSPM specific stuffs in the ACPICA debugger core blocks Linux debugger IO driver implementation. Several new OSL APIs are provided by this patch: 1. acpi_os_initialize_command_signals: initialize command handshake mechanism or any other OSPM specific stuffs. 2. acpi_os_terminate_command_signals: reversal of acpi_os_initialize_command_signals. 3. acpi_os_wait_command_ready: putting debugger task into wait state when a command is not ready. OSPMs can terminate command loop by returning AE_CTRL_TERMINATE from this API. Normally, wait_event() or wait_for_multiple_object() may be used to implement this API. 4. acpi_os_notify_command_complete: putting user task into running state when a command has been completed. OSPMs can terminate command loop by returning AE_CTRL_TERMINATE from this API. Normally, wake_up() or set_event() may be used to implement this API. This patch also converts current command signaling implementation into a generic debugger layer (osgendbg.c) to be used by the existing OSPMs or acpiexec, in return, Linux can have chance to implement its own command handshake mechanism. This patch also implements acpiexec batch mode in a multi-threading mode comaptible style as a demo (this can be confirmed by configuring acpiexec into DEBUGGER_MULTI_THREADED mode where the batch mode is still working). Lv Zheng. Note that the OSPM specific command handshake mechanism is required by Linux kernel because: 1. Linux kernel trends to use wait queue to synchronize two threads, using mutexes to achieve that will cause false "dead lock" warnings. 2. The command handshake mechanism implemented by ACPICA is implemented in this way because of a design issue in debugger IO streaming. Debugger IO outputs are simply cached using a giant buffer, this should be tuned by Linux in the future. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Debugger: Remove unnecessary status checkColin Ian King2015-12-151-3/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | ACPICA commit f9d5c6c9a25e9f5ac05458bfcd8b381e21bb2ba5 ACPICA BZ 1205. Colin Ian King. Link: https://bugs.acpica.org/show_bug.cgi?id=1205 Link: https://github.com/acpica/acpica/commit/f9d5c6c9 Signed-off-by: Colin Ian King <colin.king@canonical.com> 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>
* | ACPI / processor: Fix thermal cooling device regressionSrinivas Pandruvada2015-12-211-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The processor cooling device is no longer present for passive thermal control. Commit 239708a3af44 ("ACPI: Split out ACPI PSS from ACPI Processor driver") moved the processing to a new function acpi_pss_perf_init(), but missed "return 0" after successful creation. This causes the error handling functions to be called, which will delete the previously created processor cooling device. Fixes: 239708a3af44 (ACPI: Split out ACPI PSS from ACPI Processor driver) Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: 4.3+ <stable@vger.kernel.org> # 4.3+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | nfit: acpi_nfit_notify(): Do not leave device lockedAlexey Khoroshilov2015-12-111-1/+1
|/ | | | | | | | | | | | Even if dev->driver is null because we are being removed, it is safer to not leave device locked. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* Merge branch 'libnvdimm-fixes' of ↵Linus Torvalds2015-12-042-19/+49
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm fixes from Dan Williams: - NFIT parsing regression fixes from Linda. The nvdimm hot-add implementation merged in 4.4-rc1 interpreted the specification in a way that breaks actual HPE platforms. We are also closing the loop with the ACPI Working Group to get this clarification added to the spec. - Andy pointed out that his laptop without nvdimm resources is loading the e820-nvdimm module by default, fix that up to only load the module when an e820-type-12 range is present. * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: nfit: Adjust for different _FIT and NFIT headers nfit: Fix the check for a successful NFIT merge nfit: Account for table size length variation libnvdimm, e820: skip module loading when no type-12
| * nfit: Adjust for different _FIT and NFIT headersLinda Knippers2015-11-302-13/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When support for _FIT was added, the code presumed that the data returned by the _FIT method is identical to the NFIT table, which starts with an acpi_table_header. However, the _FIT is defined to return a data in the format of a series of NFIT type structure entries and as a method, has an acpi_object header rather tahn an acpi_table_header. To address the differences, explicitly save the acpi_table_header from the NFIT, since it is accessible through /sys, and change the nfit pointer in the acpi_desc structure to point to the table entries rather than the headers. Reported-by: Jeff Moyer (jmoyer@redhat.com> Signed-off-by: Linda Knippers <linda.knippers@hpe.com> Acked-by: Vishal Verma <vishal.l.verma@intel.com> [vishal: fix up unit test for new header assumptions] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| * nfit: Fix the check for a successful NFIT mergeLinda Knippers2015-11-301-1/+1
| | | | | | | | | | | | | | | | | | Missed previously due to a lack of test coverage on a platform that provided an valid response to _FIT. Signed-off-by: Linda Knippers <linda.knippers@hpe.com> Acked-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| * nfit: Account for table size length variationLinda Knippers2015-11-301-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The size of NFIT tables don't necessarily match the size of the data structures that we use for them. For example, the NVDIMM Control Region Structure table is shorter for a device with no block control windows than for a device with block control windows. Other tables, such as Flush Hint Address Structure and the Interleave Structure are variable length by definition. Account for the size difference when comparing table entries by using the actual table size from the table header if it's less than the structure size. Signed-off-by: Linda Knippers <linda.knippers@hpe.com> Acked-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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*---. \ Merge branches 'acpica', 'acpi-video' and 'device-properties'Rafael J. Wysocki2015-12-041-2/+2
|\ \ \ \ | | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpica: ACPI: Better describe ACPI_DEBUGGER * acpi-video: MAINTAINERS: ACPI / video: update a file name in drivers/acpi/ * device-properties: ACPI / property: fix compile error for acpi_node_get_property_reference() when CONFIG_ACPI=n
| * | | ACPI: Better describe ACPI_DEBUGGERPeter Zijlstra2015-11-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hi, For a brief moment I was tricked into thinking that: In-kernel debugger (EXPERIMENTAL) (ACPI_DEBUGGER) [N/y/?] (NEW) might be something useful. Better describe the feature to reduce such confusion. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | | Merge branches 'acpi-pci' and 'pm-pci'Rafael J. Wysocki2015-12-0474-397/+11348
|\ \ \ \ | | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | * acpi-pci: x86/PCI/ACPI: Fix regression caused by commit 4d6b4e69a245 * pm-pci: PCI / PM: Tune down retryable runtime suspend error messages
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| *---. \ \ Merge branches 'acpi-smbus', 'acpi-ec' and 'acpi-pci'Rafael J. Wysocki2015-11-202-42/+8Star
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpi-smbus: Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook" ACPI / SMBus: Fix boot stalls / high CPU caused by reentrant code * acpi-ec: ACPI-EC: Drop unnecessary check made before calling acpi_ec_delete_query() * acpi-pci: PCI: Fix OF logic in pci_dma_configure()
| | | * | | | ACPI-EC: Drop unnecessary check made before calling acpi_ec_delete_query()Markus Elfring2015-11-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The acpi_ec_delete_query() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> [ rjw: Subject ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * | | | | Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook"Chris Bainbridge2015-11-161-22/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revert commit 3349fb64b292 (ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook), since the delay introduced by it is not necessary any more after commit add68d6aa9e2 (ACPI / SMBus: Fix boot stalls / high CPU caused by reentrant code). Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com> [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * | | | | ACPI / SMBus: Fix boot stalls / high CPU caused by reentrant codeChris Bainbridge2015-11-161-19/+7Star
| | |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the SBS initialisation, a reentrant call to wait_event_timeout() causes an intermittent boot stall of several minutes usually following the "Switching to clocksource tsc" message. Another symptom of this bug is high CPU usage from programs (Firefox, upowerd) querying the battery state. This is caused by: 1. drivers/acpi/sbshc.c wait_transaction_complete() calls wait_event_timeout(): if (wait_event_timeout(hc->wait, smb_check_done(hc), msecs_to_jiffies(timeout))) 2. ___wait_event sets task state to uninterruptible 3. ___wait_event calls the "condition" smb_check_done() 4. smb_check_done (sbshc.c) calls through to ec_read() in drivers/acpi/ec.c 5. ec_guard() is reached which calls wait_event_timeout() if (wait_event_timeout(ec->wait, ec_transaction_completed(ec), guard)) ie. wait_event_timeout() is being called again inside evaluation of the previous wait_event_timeout() condition 5. The EC IRQ handler calls wake_up() and wakes up the sleeping task in ec_guard() 6. The task is now in state running even though the wait "condition" is still being evaluated 7. The "condition" check returns false so ___wait_event calls schedule_timeout() 8. Since the task state is running, the scheduler immediately schedules it again 9. This loop usually repeats for around 250 seconds even though the original wait_event_timeout was only 1000ms. The timeout is incorrect because each call to schedule_timeout() usually returns immediately, taking less than 1ms, so the jiffies timeout counter is not decremented. The task is now stuck in a running state, and so is highly likely to be immediately rescheduled, which takes less than a jiffy. The loop will never exit if all schedule_timeout() calls take less than a jiffy. Fix this by replacing SMBus reads in the wait_event_timeout condition with checks of a boolean value that is updated by the EC query handler. Link: https://bugzilla.kernel.org/show_bug.cgi?id=107191 Link: https://lkml.org/lkml/2015/11/6/776 Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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| *-. \ \ \ \ Merge branches 'pm-cpufreq' and 'acpi-cppc'Rafael J. Wysocki2015-11-201-1/+1
| |\ \ \ \ \ \ | | |_|/ / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pm-cpufreq: Revert "Documentation: kernel_parameters for Intel P state driver" cpufreq: mediatek: fix build error cpufreq: intel_pstate: Add separate support for Airmont cores cpufreq: intel_pstate: Replace BYT with ATOM Revert "cpufreq: intel_pstate: Use ACPI perf configuration" Revert "cpufreq: intel_pstate: Avoid calculation for max/min" * acpi-cppc: ACPI / CPPC: Use h/w reduced version of the PCCT structure
| | | * | | | ACPI / CPPC: Use h/w reduced version of the PCCT structureAshwin Chaugule2015-11-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CPPC is enabled only on platforms which support the h/w reduced ACPI specification, so use the h/w reduced version of the PCCT consistently when deferencing PCCT contents. Fixes: 337aadff8e45 (ACPI: Introduce CPU performance controls using CPPC) Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | | | | | Merge tag 'pm+acpi-4.4-rc1-2' of ↵Linus Torvalds2015-11-125-16/+128
| |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management and ACPI updates from Rafael Wysocki: "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)" * tag 'pm+acpi-4.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits) PCI: ACPI: Add support for PCI device DMA coherency PCI: OF: Move of_pci_dma_configure() to pci_dma_configure() of/pci: Fix pci_get_host_bridge_device leak device property: ACPI: Remove unused DMA APIs device property: ACPI: Make use of the new DMA Attribute APIs device property: Adding DMA Attribute APIs for Generic Devices ACPI: Adding DMA Attribute APIs for ACPI Device device property: Introducing enum dev_dma_attr ACPI: Honor ACPI _CCA attribute setting cpufreq: CPPC: Delete an unnecessary check before the function call kfree() PM / OPP: Add opp_rcu_lockdep_assert() to _find_device_opp() PM / OPP: Hold dev_opp_list_lock for writers PM / OPP: Protect updates to list_dev with mutex PM / OPP: Propagate error properly from dev_pm_opp_set_sharing_cpus() cpufreq: s5pv210-cpufreq: fix wrong do_div() usage MAINTAINERS: update for intel P-state driver Creating a common structure initialization pattern for struct option cpupower: Enable disabled Cstates if they are below max latency cpupower: Remove debug message when using cpupower idle-set -D switch cpupower: cpupower monitor reports uninitialized values for offline cpus ...
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| | *-. \ \ \ \ \ Merge branches 'acpi-video' and 'acpi-cppc'Rafael J. Wysocki2015-11-072-12/+75
| | |\ \ \ \ \ \ \ | | | | | |/ / / / | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpi-video: ACPI / video: only register backlight for LCD device ACPI / video: Add a quirk to force acpi-video backlight on Dell XPS L421X * acpi-cppc: cpufreq: CPPC: Delete an unnecessary check before the function call kfree()
| | | * | | | | | ACPI / video: only register backlight for LCD deviceAaron Lu2015-11-021-12/+66
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The firmware of ESPRIMO Mobile M9410 has two video output devices that have _BCM control method, one is the type of "External Digital Monitor" while the other is the type of "Internal/Integrated Digital Flat Panel". Only the 2nd video output device's _BCM control method works, but since we have created two and the 1st one got picked up by user space, the backlight functionality is broken. To solve this problem, only register backlight interface for "Internal/Integrated Digital Flat Panel" type video output device on this laptop. Another problem of this laptop is that the IDs listed by the _DOD method doesn't have bit 31 set, which means it doesn't follow the format specified by ACPI spec. But the value indicates that it actually follows that format so I've added a DMI quirk and a module level parameter to force use the device_id_scheme so that we can get the video output device's type to do the decision if we should register backlight interface. Link: https://bugzilla.kernel.org/show_bug.cgi?id=104121 Suggested-by: Hans de Goede <hdegoede@redhat.com> Reported-and-tested-by: Christian Scharl <zahlsum-kernelbugs@yahoo.de> Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | | * | | | | | ACPI / video: Add a quirk to force acpi-video backlight on Dell XPS L421XHans de Goede2015-11-021-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Just like the Dell XPS 15 (L521X) the Dell XPS 14 (L421X) needs to use the acpi-video backlight interface rather then the native one for backlight control to work, add a quirk for this. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1272633 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * | | | | | | Merge branch 'acpi-pci'Rafael J. Wysocki2015-11-073-4/+53
| | |\ \ \ \ \ \ \ | | | | |_|_|/ / / | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpi-pci: PCI: ACPI: Add support for PCI device DMA coherency PCI: OF: Move of_pci_dma_configure() to pci_dma_configure() of/pci: Fix pci_get_host_bridge_device leak device property: ACPI: Remove unused DMA APIs device property: ACPI: Make use of the new DMA Attribute APIs device property: Adding DMA Attribute APIs for Generic Devices ACPI: Adding DMA Attribute APIs for ACPI Device device property: Introducing enum dev_dma_attr ACPI: Honor ACPI _CCA attribute setting Conflicts: drivers/crypto/ccp/ccp-platform.c
| * | | | | | | | Merge branch 'next' of ↵Linus Torvalds2015-11-111-6/+6
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal updates from Zhang Rui: - Implement generic devfreq cooling mechanism through frequency reduction for devices using devfreq. From Ørjan Eide and Javi Merino. - Introduce OMAP3 support on TI SoC thermal driver. From Pavel Mack and Eduardo Valentin. - A bounch of small fixes on devfreq_cooling, Exynos, IMX, Armada, and Rockchip thermal drivers. * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (24 commits) thermal: exynos: Directly return 0 instead of using local ret variable thermal: exynos: Remove unneeded semicolon thermal: exynos: Use IS_ERR() because regulator cannot be NULL thermal: exynos: Fix first temperature read after registering sensor thermal: exynos: Fix unbalanced regulator disable on probe failure devfreq_cooling: return on allocation failure thermal: rockchip: support the sleep pinctrl state to avoid glitches in s2r dt-bindings: rockchip-thermal: Add the pinctrl states in this document thermal: devfreq_cooling: Make power a u64 thermal: devfreq_cooling: use a thermal_cooling_device for register and unregister thermal: underflow bug in imx_set_trip_temp() thermal: armada: Fix possible overflow in the Armada 380 thermal sensor formula thermal: imx: register irq handler later in probe thermal: rockhip: fix setting thermal shutdown polarity thermal: rockchip: fix handling of invalid readings devfreq_cooling: add trace information thermal: Add devfreq cooling PM / OPP: get the voltage for all OPPs tools/thermal: tmon: use pkg-config also for CFLAGS linux/thermal.h: rename KELVIN_TO_CELSIUS to DECI_KELVIN_TO_CELSIUS ...
| | * | | | | | | | linux/thermal.h: rename KELVIN_TO_CELSIUS to DECI_KELVIN_TO_CELSIUSRasmus Villemoes2015-10-101-6/+6
| | | |_|_|_|/ / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The macros KELVIN_TO_CELSIUS and CELSIUS_TO_KELVIN actually convert between deciKelvins and Celsius, so rename them to reflect that. While at it, use a statement expression in DECI_KELVIN_TO_CELSIUS to prevent expanding the argument multiple times and get rid of a few casts. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
| * | | | | | | | Merge tag 'libnvdimm-for-4.4' of ↵Linus Torvalds2015-11-102-56/+244
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "Outside of the new ACPI-NFIT hot-add support this pull request is more notable for what it does not contain, than what it does. There were a handful of development topics this cycle, dax get_user_pages, dax fsync, and raw block dax, that need more more iteration and will wait for 4.5. The patches to make devm and the pmem driver NUMA aware have been in -next for several weeks. The hot-add support has not, but is contained to the NFIT driver and is passing unit tests. The coredump support is straightforward and was looked over by Jeff. All of it has received a 0day build success notification across 107 configs. Summary: - Add support for the ACPI 6.0 NFIT hot add mechanism to process updates of the NFIT at runtime. - Teach the coredump implementation how to filter out DAX mappings. - Introduce NUMA hints for allocations made by the pmem driver, and as a side effect all devm allocations now hint their NUMA node by default" * tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: coredump: add DAX filtering for FDPIC ELF coredumps coredump: add DAX filtering for ELF coredumps acpi: nfit: Add support for hot-add nfit: in acpi_nfit_init, break on a 0-length table pmem, memremap: convert to numa aware allocations devm_memremap_pages: use numa_mem_id devm: make allocations numa aware by default devm_memremap: convert to return ERR_PTR devm_memunmap: use devres_release() pmem: kill memremap_pmem() x86, mm: quiet arch_add_memory()
| | * | | | | | | | acpi: nfit: Add support for hot-addVishal Verma2015-11-022-56/+238
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a .notify callback to the acpi_nfit_driver that gets called on a hotplug event. From this, evaluate the _FIT ACPI method which returns the updated NFIT with handles for the hot-plugged NVDIMM. Iterate over the new NFIT, and add any new tables found, and register/enable the corresponding regions. In the nfit test framework, after normal initialization, update the NFIT with a new hot-plugged NVDIMM, and directly call into the driver to update its view of the available regions. Cc: Dan Williams <dan.j.williams@intel.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Toshi Kani <toshi.kani@hpe.com> Cc: Elliott, Robert <elliott@hpe.com> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: <linux-acpi@vger.kernel.org> Cc: <linux-nvdimm@lists.01.org> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| | * | | | | | | | nfit: in acpi_nfit_init, break on a 0-length tableVishal Verma2015-11-021-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If acpi_nfit_init is called (such as from nfit_test), with an nfit table that has more memory allocated than it needs (and a similarly large 'size' field, add_tables would happily keep adding null SPA Range tables filling up all available memory. Make it friendlier by breaking out if a 0-length header is found in any of the tables. Cc: Dan Williams <dan.j.williams@intel.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: <linux-acpi@vger.kernel.org> Cc: <linux-nvdimm@lists.01.org> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| * | | | | | | | | Merge tag 'asm-generic-for-linus' of ↵Linus Torvalds2015-11-062-2/+2
| |\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic cleanups from Arnd Bergmann: "The asm-generic changes for 4.4 are mostly a series from Christoph Hellwig to clean up various abuses of headers in there. The patch to rename the io-64-nonatomic-*.h headers caused some conflicts with new users, so I added a workaround that we can remove in the next merge window. The only other patch is a warning fix from Marek Vasut" * tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: asm-generic: temporarily add back asm-generic/io-64-nonatomic*.h asm-generic: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations gpio-mxc: stop including <asm-generic/bug> n_tracesink: stop including <asm-generic/bug> n_tracerouter: stop including <asm-generic/bug> mlx5: stop including <asm-generic/kmap_types.h> hifn_795x: stop including <asm-generic/kmap_types.h> drbd: stop including <asm-generic/kmap_types.h> move count_zeroes.h out of asm-generic move io-64-nonatomic*.h out of asm-generic
| | * | | | | | | | | move io-64-nonatomic*.h out of asm-genericChristoph Hellwig2015-10-152-2/+2
| | | |/ / / / / / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These are not implementations of default architecture code but helpers for drivers. Move them to the place they belong to. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Darren Hart <dvhart@linux.intel.com> Acked-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | | | | | | | | Merge tag 'driver-core-4.4-rc1' of ↵Linus Torvalds2015-11-052-2/+2
| |\ \ \ \ \ \ \ \ \ | | |_|_|/ / / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here's the "big" driver core updates for 4.4-rc1. Primarily a bunch of debugfs updates, with a smattering of minor driver core fixes and updates as well. All have been in linux-next for a long time" * tag 'driver-core-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: debugfs: Add debugfs_create_ulong() of: to support binding numa node to specified device in devicetree debugfs: Add read-only/write-only bool file ops debugfs: Add read-only/write-only size_t file ops debugfs: Add read-only/write-only x64 file ops debugfs: Consolidate file mode checks in debugfs_create_*() Revert "mm: Check if section present during memory block (un)registering" driver-core: platform: Provide helpers for multi-driver modules mm: Check if section present during memory block (un)registering devres: fix a for loop bounds check CMA: fix CONFIG_CMA_SIZE_MBYTES overflow in 64bit base/platform: assert that dev_pm_domain callbacks are called unconditionally sysfs: correctly handle short reads on PREALLOC attrs. base: soc: siplify ida usage kobject: move EXPORT_SYMBOL() macros next to corresponding definitions kobject: explain what kobject's sd field is debugfs: document that debugfs_remove*() accepts NULL and error values debugfs: Pass bool pointer to debugfs_create_bool() ACPI / EC: Fix broken 64bit big-endian users of 'global_lock'
| | * | | | | | | | debugfs: Pass bool pointer to debugfs_create_bool()Viresh Kumar2015-10-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Its a bit odd that debugfs_create_bool() takes 'u32 *' as an argument, when all it needs is a boolean pointer. It would be better to update this API to make it accept 'bool *' instead, as that will make it more consistent and often more convenient. Over that bool takes just a byte. That required updates to all user sites as well, in the same commit updating the API. regmap core was also using debugfs_{read|write}_file_bool(), directly and variable types were updated for that to be bool as well. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| | * | | | | | | | ACPI / EC: Fix broken 64bit big-endian users of 'global_lock'Viresh Kumar2015-10-042-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | global_lock is defined as an unsigned long and accessing only its lower 32 bits from sysfs is incorrect, as we need to consider other 32 bits for big endian 64-bit systems. There are no such platforms yet, but the code needs to be robust for such a case. Fix that by changing type of 'global_lock' to u32. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | | | | | | | Merge tag 'pm+acpi-4.4-rc1-1' of ↵Linus Torvalds2015-11-0568-324/+11637
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First off, the Collaborative Processor Performance Control interface (version 2) defined by ACPI will now be supported on ARM64 along with a cpufreq frontend for CPU performance scaling. Second, ACPI gets a new infrastructure for the early probing of IRQ chips and clock sources (along the lines of the existing similar mechanism for DT). Next, the ACPI core and the generic device properties API will now support a recently introduced hierarchical properties extension of the _DSD (Device Specific Data) ACPI device configuration object. If the ACPI platform firmware uses that extension to organize device properties in a hierarchical way, the kernel will automatically handle it and make those properties available to device drivers via the generic device properties API. It also will be possible to build the ACPICA's AML interpreter debugger into the kernel now and use that to diagnose AML-related problems more efficiently. In the future, this should make it possible to single-step AML execution and do similar things. Interesting stuff, although somewhat experimental at this point. Finally, the PM core gets a new mechanism that can be used by device drivers to distinguish between suspend-to-RAM (based on platform firmware support) and suspend-to-idle (or other variants of system suspend the platform firmware is not involved in) and possibly optimize their device suspend/resume handling accordingly. In addition to that, some existing features are re-organized quite substantially. First, the ACPI-based handling of PCI host bridges on x86 and ia64 is unified and the common code goes into the ACPI core (so as to reduce code duplication and eliminate non-essential differences between the two architectures in that area). Second, the Operating Performance Points (OPP) framework is reorganized to make the code easier to find and follow. Next, the cpufreq core's sysfs interface is reorganized to get rid of the "primary CPU" concept for configurations in which the same performance scaling settings are shared between multiple CPUs. Finally, some interfaces that aren't necessary any more are dropped from the generic power domains framework. On top of the above we have some minor extensions, cleanups and bug fixes in multiple places, as usual. Specifics: - ACPICA update to upstream revision 20150930 (Bob Moore, Lv Zheng). The most significant change is to allow the AML debugger to be built into the kernel. On top of that there is an update related to the NFIT table (the ACPI persistent memory interface) and a few fixes and cleanups. - ACPI CPPC2 (Collaborative Processor Performance Control v2) support along with a cpufreq frontend (Ashwin Chaugule). This can only be enabled on ARM64 at this point. - New ACPI infrastructure for the early probing of IRQ chips and clock sources (Marc Zyngier). - Support for a new hierarchical properties extension of the ACPI _DSD (Device Specific Data) device configuration object allowing the kernel to handle hierarchical properties (provided by the platform firmware this way) automatically and make them available to device drivers via the generic device properties interface (Rafael Wysocki). - Generic device properties API extension to obtain an index of certain string value in an array of strings, along the lines of of_property_match_string(), but working for all of the supported firmware node types, and support for the "dma-names" device property based on it (Mika Westerberg). - ACPI core fix to parse the MADT (Multiple APIC Description Table) entries in the order expected by platform firmware (and mandated by the specification) to avoid confusion on systems with more than 255 logical CPUs (Lukasz Anaczkowski). - Consolidation of the ACPI-based handling of PCI host bridges on x86 and ia64 (Jiang Liu). - ACPI core fixes to ensure that the correct IRQ number is used to represent the SCI (System Control Interrupt) in the cases when it has been re-mapped (Chen Yu). - New ACPI backlight quirk for Lenovo IdeaPad S405 (Hans de Goede). - ACPI EC driver fixes (Lv Zheng). - Assorted ACPI fixes and cleanups (Dan Carpenter, Insu Yun, Jiri Kosina, Rami Rosen, Rasmus Villemoes). - New mechanism in the PM core allowing drivers to check if the platform firmware is going to be involved in the upcoming system suspend or if it has been involved in the suspend the system is resuming from at the moment (Rafael Wysocki). This should allow drivers to optimize their suspend/resume handling in some cases and the changes include a couple of users of it (the i8042 input driver, PCI PM). - PCI PM fix to prevent runtime-suspended devices with PME enabled from being resumed during system suspend even if they aren't configured to wake up the system from sleep (Rafael Wysocki). - New mechanism to report the number of a wakeup IRQ that woke up the system from sleep last time (Alexandra Yates). - Removal of unused interfaces from the generic power domains framework and fixes related to latency measurements in that code (Ulf Hansson, Daniel Lezcano). - cpufreq core sysfs interface rework to make it handle CPUs that share performance scaling settings (represented by a common cpufreq policy object) more symmetrically (Viresh Kumar). This should help to simplify the CPU offline/online handling among other things. - cpufreq core fixes and cleanups (Viresh Kumar). - intel_pstate fixes related to the Turbo Activation Ratio (TAR) mechanism on client platforms which causes the turbo P-states range to vary depending on platform firmware settings (Srinivas Pandruvada). - intel_pstate sysfs interface fix (Prarit Bhargava). - Assorted cpufreq driver (imx, tegra20, powernv, integrator) fixes and cleanups (Bai Ping, Bartlomiej Zolnierkiewicz, Shilpasri G Bhat, Luis de Bethencourt). - cpuidle mvebu driver cleanups (Russell King). - OPP (Operating Performance Points) framework code reorganization to make it more maintainable (Viresh Kumar). - Intel Broxton support for the RAPL (Running Average Power Limits) power capping driver (Amy Wiles). - Assorted power management code fixes and cleanups (Dan Carpenter, Geert Uytterhoeven, Geliang Tang, Luis de Bethencourt, Rasmus Villemoes)" * tag 'pm+acpi-4.4-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (108 commits) cpufreq: postfix policy directory with the first CPU in related_cpus cpufreq: create cpu/cpufreq/policyX directories cpufreq: remove cpufreq_sysfs_{create|remove}_file() cpufreq: create cpu/cpufreq at boot time cpufreq: Use cpumask_copy instead of cpumask_or to copy a mask cpufreq: ondemand: Drop unnecessary locks from update_sampling_rate() PM / Domains: Merge measurements for PM QoS device latencies PM / Domains: Don't measure ->start|stop() latency in system PM callbacks PM / clk: Fix broken build due to non-matching code and header #ifdefs ACPI / Documentation: add copy_dsdt to ACPI format options ACPI / sysfs: correctly check failing memory allocation ACPI / video: Add a quirk to force native backlight on Lenovo IdeaPad S405 ACPI / CPPC: Fix potential memory leak ACPI / CPPC: signedness bug in register_pcc_channel() ACPI / PAD: power_saving_thread() is not freezable ACPI / PM: Fix incorrect wakeup IRQ setting during suspend-to-idle ACPI: Using correct irq when waiting for events ACPI: Use correct IRQ when uninstalling ACPI interrupt handler cpuidle: mvebu: disable the bind/unbind attributes and use builtin_platform_driver cpuidle: mvebu: clean up multiple platform drivers ...
| | * \ \ \ \ \ \ \ \ Merge branch 'pm-sleep'Rafael J. Wysocki2015-11-023-19/+5Star
| | |\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pm-sleep: PM / hibernate: fix a comment typo input: i8042: Avoid resetting controller on system suspend/resume PM / PCI / ACPI: Kick devices that might have been reset by firmware PM / sleep: Add flags to indicate platform firmware involvement PM / sleep: Drop pm_request_idle() from pm_generic_complete() PCI / PM: Avoid resuming more devices during system suspend PM / wakeup: wakeup_source_create: use kstrdup_const PM / sleep: Report interrupt that caused system wakeup
| | | * | | | | | | | | PM / PCI / ACPI: Kick devices that might have been reset by firmwareRafael J. Wysocki2015-10-142-19/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a concern that if the platform firmware was involved in the system resume that's being completed, some devices might have been reset by it and if those devices had the power.direct_complete flag set during the preceding suspend transition, they may stay in a reset-power-on state indefinitely (until they are runtime-resumed and then suspended again). That may not be a big deal from the individual device's perspective, but if the system is an SoC, it may be prevented from entering deep SoC-wide low-power states on idle because of that. The devices that are most likely to be affected by this issue are PCI devices and ACPI-enumerated devices using the general ACPI PM domain, so to prevent it from happening for those devices, force a runtime resume for them if they have their power.direct_complete flags set and the platform firmware was involved in the resume transition currently in progress. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-16 15:29:19 +0200