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path: root/drivers/acpi
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2013-01-25ACPICA: Update predefined info tableLv Zheng1-5/+6
The predefined info table defines return types for specific control methods. This patch updates predefined table as such enhancement has already been done in ACPICA. This patch can also reduce source code differences between Linux and ACPICA. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-11ACPICA: Cleanup table handler naming conflicts.Lv Zheng4-7/+7
This is a cosmetic patch only. Comparison of the resulting binary showed only line number differences. This patch does not affect the generation of the Linux binary. This patch decreases 44 lines of 20121114 divergence.diff. There are naming conflicts between Linux and ACPICA on table handlers. This patch cleans up this conflicts to reduce the source code diff between Linux and ACPICA. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-11ACPICA: Source restructuring: split large files into 8 new files.Bob Moore20-3103/+3494
Created logical splits for eight new files. Improves modularity and configurability. 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>
2013-01-10ACPICA: Cleanup PM_TIMER_FREQUENCY definition.Lv Zheng1-2/+3
This is a cosmetic patch only. Comparison of the resulting binary showed only line number differences. This patch does not affect the generation of the Linux binary. This patch decreases 13 lines of 20121114 divergence.diff. There is updates in ACPICA for PM_TIMER_FREQUENCY macro, this patch cleans up the usage of this macro in Linux. This patch can also reduce the source code diff between Linux and ACPICA. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Interpreter: Fix Store() when implicit conversion is not possible.Bob Moore1-5/+24
For the cases such as a store of a string to an existing package object, implement the store as a CopyObject(). This is a small departure from the ACPI specification which states that the control method should be aborted in this case. However, ASLTS suite depends on this behavior. 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>
2013-01-10ACPICA: Resources: Split interrupt share/wake bits into two fields.Bob Moore2-12/+28
These two bits are merged at the external interface level for the IRQ, Interrupt, and GpioInt resource descriptors. However, these bits are logically independent and there is no need to keep them merged internally. Therefore, this change splits the bits into "sharable" and "wake capable" fields within the resource manager. This simplifies drive code that needs to examine these bits. Aaron Lu, Bob Moore. 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>
2013-01-10ACPICA: Resources: Support for ACPI 5 wake bit in ExtendedInterrupt descriptor.Aaron Lu1-5/+5
Add support to both get and set the extended share flags for the Interrupt() resource descriptor. Reported by Aaron Lu. Signed-off-by: Aaron Lu <aaron.lu@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>
2013-01-10ACPICA: Interpreter: Add warning if 64-bit constant appears in 32-bit table.Bob Moore6-14/+28
Some ASL compilers allow 64-bit constants within a 32-bit table (DSDT version == 1). When encountered, emit a warning that the constant will be truncated to 32 bits. This is potentially a serious problem in the ACPI table(s). 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>
2013-01-10ACPICA: Update ACPICA initialization messages.Bob Moore4-14/+19
Clarify messages, indent if appropriate. Change a couple appropriate messages to ACPI_INFO so they will appear even if debug output is disabled. 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>
2013-01-10ACPICA: Namespace: Eliminate dot...dot output during initialization.Bob Moore1-17/+4
This feature no longer serves any good purpose and also confuses any error messages during ACPICA initialization. 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>
2013-01-10ACPICA: Resource manager: Add support for ACPI 5 wake bit in IRQ descriptor.Aaron Lu1-4/+4
Add support to both get and set the extended share flags for the IRQ() resource descriptor. Reported by Aaron Lu. Signed-off-by: Aaron Lu <aaron.lu@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>
2013-01-10ACPICA: Fix possible memory leak in dispatcher error path.Tim Gardner1-0/+1
On error, delete mutex object created during method mutex creation. Reported by tim.gardner@canonical.com. Signed-off-by: Tim Gardner <tim.gardner@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>
2013-01-10ACPICA: Update for non-configured ACPI_IS_DEBUG_ENABLED macro.Bob Moore1-0/+1
Also add acoutput.h to the nsdump.c file. 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>
2013-01-10ACPICA: Merge all debug output macros into a single file, acoutput.Bob Moore1-126/+0
Moved the debug trace macros from acmacros.h into acoutput.h where they belong. 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>
2013-01-10ACPICA: Deploy new ACPI_IS_DEBUG_ENABLED macro in debug output code.Bob Moore3-16/+20
Simplifies check for debug output enables. 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>
2013-01-10ACPICA: Eliminate superfluous return_UINT8 and return_UINT32 macros.Bob Moore10-32/+25
These macros were implemented the same as return_VALUE and thus they were not needed. 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>
2013-01-10ACPICA: FUNCTION_TRACE macros: Check if debug is enabled up-front.Bob Moore1-40/+78
In the functions that implement the macros, check if debug is enabled up-front before the call to the lower debug print function. This provides a small performance improvement. 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>
2013-01-10ACPICA: DEBUG_PRINT macros: Update to improve performance.Bob Moore1-65/+67
Move check for "debug enable" to before the actual call to the debug print routine. Improves time of ASLTS by about 15%. Also, remove "safe" exit macros since no complex expressions are ever used in the return statements. 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>
2013-01-10ACPICA: Resource Manager: Add a pointer cast for a namespace node.Rafael J. Wysocki1-1/+3
Add a missing cast for a namespace node pointer passed in from an external interface. Reported Rafael Wysocki. 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>
2013-01-10ACPICA: Add time macros for various timer/time manipulation.Bob Moore3-5/+6
Constants for time manipulation, including constants for the 100 nanosecond timers. Chao Guan, Bob Moore, Lv Zheng. 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>
2013-01-10ACPICA: Lint changes, no functional change.Bob Moore2-5/+6
Some changes from lint. 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>
2013-01-10ACPICA: Add root node optimization to internal get namespace node function.Bob Moore1-0/+9
Detect a request for the root node (a lone backslash) up front before invoking a full namespace lookup. 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>
2013-01-10ACPICA: Eliminate some small unnecessary pathname functions.Bob Moore8-65/+22
Removed several small pathname functions to increase efficiency. Essentially, they replace a function call with a single compare. 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>
2013-01-10ACPICA: Change exception code for LoadTable operator.Bob Moore1-3/+4
For the case where one of the input strings is too long, change the returned exception code from AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 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>
2013-01-10ACPICA: Resources: New interface, AcpiWalkResourceBuffer.Bob Moore1-31/+70
Implements a new interface for walking resource lists that it at a lower level than the existing AcpiWalkResources. (Method is not executed.) 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>
2013-01-10ACPICA: AcpiGetObjectInfo: optimize exit for mutex failure.Bob Moore1-1/+1
No need for a goto to the bottom of the function, simply return the status code immediately. 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>
2013-01-10ACPICA: Resource Manager: update template walking with ACPI_NEXT_RESOURCE.Lv Zheng1-3/+1
Cleanup the ACPI_NEXT_RESOURCE macro. Update AcpiWalkResources to use ACPI_NEXT_RESOURCE. Lv Zheng. 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>
2013-01-10ACPICA: Enhance the ACPI_GETx and ACPI_SETx macros.Lv Zheng3-45/+54
Improve the implementation of the macros. Change the SETx macros to the style of (destination, source). Also add ACPI_CASTx companion macros. Lv Zheng. 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>
2013-01-10ACPICA: Add macros to extract flag bits from resource descriptors.Bob Moore1-0/+14
Improves readability and maintainability of the code. Fixes a problem with the UART serial bus descriptor for the number of data bits flags (was incorrectly 2 bits, should be 3). 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>
2013-01-10ACPICA: Disassembler: Add new ACPI 5 interrupt sharing flags.Bob Moore2-4/+6
This changes adds the ShareAndWake and ExclusiveAndWake flags which were added to the Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. 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>
2013-01-10ACPICA: Debugger: Major update for the Disassemble<method> command.Bob Moore5-44/+52
This command was downreved and did not properly disassemble control methods with any reasonable complexity. This fix brings the command up to the same level as the rest of the disassembler. Adds one new file, dmdeferred.c, which is existing code that is now common with the main disassembler and the debugger disassembl command. 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>
2013-01-10ACPICA: Performance: Remove function tracing from critical allocation functions.Bob Moore4-47/+43
Tracing is no longer needed for many of the low-level function. Removing the trace mechanism from these functions improves performance a small amount, also simplifies the debug trace output. 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>
2013-01-10ACPICA: Performance enhancement for ACPI package objects.Chao Guan1-9/+33
This change greatly increases the performance of package objects within the interpreter. It changes the processing of reference counts for packages by optimizing for the most common case where the package subobjects are either integers, strings, or buffers. Increases the performance of the ASLTS test suite by 1.5X. Chao Guan. ACPICA BZ 943. https://www.acpica.org/bugzilla/show_bug.cgi?id=943 Signed-off-by: Chao Guan <chao.guan@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>
2013-01-10ACPICA: Fix possible memory leak.Jesper Juhl1-1/+2
Ensure cleanup after a memory allocation failure in dsmethod.c. Original Linux change from Jesper Juhl. Signed-off-by: Jesper Juhl <jj@chaosbits.net> 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>
2013-01-10ACPICA: Update initialization codes.Lv Zheng1-1/+2
This patch decreases 18 lines of 20121018 divergence.diff. This patch updates initialization codes as they are already been updated in ACPICA. This can also help to reduce source code differences between Linux and ACPICA. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Enhance error messages.Lv Zheng2-5/+5
This patch decreases 29 lines of 20121018 divergence.diff. This patch updates error messages that already have been enhanced in ACPICA. This patch can also help to reduce the source code differences between Linux and ACPICA. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Fix broken call depth tracing logic.Lv Zheng2-3/+2
This patch does not affect the generation of the Linux binary. This patch decreases 26 lines of 20121018 divergence.diff. The ACPICA uses a call depth tracing mechanism by wrapping the return statements with return macros and marking the entrance with ACPI_FUNCTION_TRACE_ macros. There are other ACPI_FUNCTION_ macros used to mark the functions not using this tracing mechanism. This patch fixes broken call depth tracing logic. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Cleanup coding style to reduce differences between Linux and ACPICA.Lv Zheng11-35/+37
This is a cosmetic patch only. Comparison of the resulting binary showed only line number differences. This patch does not affect the generation of the Linux binary. This patch decreases 314 lines of 20121018 divergence.diff. ACPICA core uses ()'s on return statements. This is a known and committed differences from Linux standard coding style. This patch cleans up the Linux side ACPICA code to use this codying style in order to reduce the source code differences between Linux and ACPICA. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Cleanup indentation to reduce differences between Linux and ACPICA.Lv Zheng23-52/+47
This is a cosmetic patch only. Comparison of the resulting binary showed only line number differences. This patch does not affect the generation of the Linux binary. This patch decreases 210 lines of 20121018 divergence.diff. The ACPICA source codes uses a totally different indentation style from the Linux to be compatible with other users (operating systems or BIOS). Indentation differences are critical to the release automation. There are two causes related to the "indentation" that are affecting the release automation: 1. The ACPICA -> Linux release process is: ACPICA source -- acpisrc - hierarchy - indent -> linuxized ACPICA source -- diff -> linuxized ACPICA patch (x) -- human intervention -> linuxized ACPICA patch (o) Where 'x' means "cannot be directly applied to the Linux" 'o' means "can be directly applied to the Linux" Different "indent" version or "indent" options used in the "indent" step will lead to different divergences. The version of "indent" used for the current release process is: GNU indent 2.2.11 The options of "indent" used for the current release process is: -npro -kr -i8 -ts8 -sob -l80 -ss -ncs 2. Manual indentation prettifying work in the Linux side will also harm the automatically generated linuxized ACPICA patches, making them impossible to apply directly. This patch fixes source code differences caused by the two causes so that the "human intervention" can be reduced in the future. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Cleanup source to reduce differences between Linux and ACPICA.Lv Zheng15-38/+34
This is a cosmetic patch only. Comparison of the resulting binary showed only line number differences. This patch does not affect the generation of the Linux binary. This patch decreases 389 lines of 20121018 divergence.diff. This patch reduces source code diff caused by the simple code maintenance work: 1. Deletion of the unused include files. 2. Deletion of the deprecated codes blocks. 3. Repositioning of the code blocks. 4. Replacing the values with the well defined macros. 5. Replacing the types with the equivalent types. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Update codes under disabled build options.Lv Zheng6-3/+40
This is a cosmetic patch only. Comparison of the resulting binary showed only line number differences. This patch does not affect the generation of the Linux binary. This patch decreases 170 lines of 20121018 divergence.diff. This patch updates ACPICA codes surrounded by some disabled build options so that the source code diff between Linux and ACPICA can be reduced. Some of these build options may never be used in the kernel, so they may be deleted entirely in future patches. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-10ACPICA: Cleanup updated comments.Lv Zheng24-69/+80
This is a cosmetic patch only. Comparison of the resulting binary showed only line number differences. This patch does not affect the generation of the Linux binary. This patch decreases 558 lines of 20121018 divergence.diff. This patch reduces the source code diff between Linux and ACPICA by cleaning the comments that already have been updated in ACPICA. There is no extra indentation done in this patch. Even the empty line deletions and insertions are also splitted into another cleanup patch so that this patch can be easily reviewed, and the binary differences can be held to a lowest level. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-05Merge branch 'acpi-assorted'Rafael J. Wysocki6-33/+21
* acpi-assorted: ACPI / scan: Do not use dummy HID for system bus ACPI nodes ACPI / power: Remove useless message from device registering routine ACPI / glue: Update DBG macro to include KERN_DEBUG ACPI / PM: Do not apply ACPI_SUCCESS() to acpi_bus_get_device() result ACPI / memhotplug: remove redundant logic of acpi memory hotadd ACPI / APEI: Fix the returned value in erst_dbg_read
2013-01-05ACPI / scan: Do not use dummy HID for system bus ACPI nodesRafael J. Wysocki1-1/+1
At one point acpi_device_set_id() checks if acpi_device_hid(device) returns NULL, but that never happens, so system bus devices with an empty list of PNP IDs are given the dummy HID ("device") instead of the "system bus HID" ("LNXSYBUS"). Fix the code to use the right check. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: <stable@vger.kernel.org>
2013-01-03ACPI / power: Remove useless message from device registering routineRafael J. Wysocki1-9/+2
After commit 71fbad6 (PCI/ACPI: Notify PCI devices when their power resource is turned on) made acpi_pci_bind() call acpi_power_resource_register_device(), the debug message at the end of the latter appears in the kernel log for every PCI device that doesn't happen to have power resources assigned (which is the vast majority of them). However, this message is totally useless, because it doesn't even say which device it is about. Moreover, it is misleading, because it only means that the given device has no power resources, which isn't exceptional at all. Remove that useless message altogether and simplify acpi_power_resource_register_device() slightly. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-03ACPI / glue: Update DBG macro to include KERN_DEBUGJoe Perches1-2/+7
Currently these DBG statements are emitted at KERN_DEFAULT. Change the macro to emit at KERN_DEBUG. This can help avoid unexpected message interleaving. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-03ACPI / PM: Do not apply ACPI_SUCCESS() to acpi_bus_get_device() resultRafael J. Wysocki1-2/+1
Since the return value of acpi_bus_get_device() is not of type acpi_status, ACPI_SUCCESS() should not be used for checking its return value. Fix that. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2013-01-03ACPI / memhotplug: remove redundant logic of acpi memory hotaddLiu Jinsong1-18/+0
When memory hotadd, acpi_memory_enable_device has already been done at drv->ops.add (acpi_memory_device_add), no need to do it again at notify callback. At acpi_memory_enable_device, acpi_memory_get_device_resources is also a redundant action, since it has been done at drv->ops.add. Signed-off-by: Liu Jinsong <jinsong.liu@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-03ACPI / APEI: Fix the returned value in erst_dbg_readAdrian Huang1-1/+10
If the persistent store is empty initially, the function 'erst_dbg_read' returns a nonzero value. The better way is to return a zero indicating the read operation reaches EOF. Tested on two different servers. Signed-off-by: Adrian Huang <adrian.huang@hp.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-03ACPICA: Remove useless mini-C library.Lv Zheng2-750/+1
The mini-C library implementation is used by the embedded ACPICA users other than Linux. It was added to the kernel source to make it easier to incorporate future ACPICA changes, but as it turns our we can avoid carrying it thanks to some ACPICA release process tweaks, so remove drivers/acpi/acpica/utclib.c from the kernel source tree. [rjw: Modified the changelog slightly.] Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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