linux-toradex.git/drivers/acpi/acpica, branch v4.4.90

ACPICA: acpi_get_sleep_type_data: Reduce warnings

2016-10-07T13:23:48+00:00

commit a59b679ab85635737947310323f2f2bcfa0664a7 upstream.

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 
Signed-off-by: Bob Moore 
Signed-off-by: Lv Zheng 
Signed-off-by: Rafael J. Wysocki 
Cc: "Charles (Chas) Williams" 
Signed-off-by: Greg Kroah-Hartman

ACPICA: Dispatcher: Update thread ID for recursive method calls

2016-05-11T09:21:20+00:00

commit 93d68841a23a5779cef6fb9aa0ef32e7c5bd00da upstream.

ACPICA commit 7a3bd2d962f221809f25ddb826c9e551b916eb25

Set the mutex owner thread ID.
Original patch from: Prarit Bhargava 

Link: https://bugzilla.kernel.org/show_bug.cgi?id=115121
Link: https://github.com/acpica/acpica/commit/7a3bd2d9
Signed-off-by: Prarit Bhargava 
Tested-by: Andy Lutomirski  # On a Dell XPS 13 9350
Signed-off-by: Bob Moore 
Signed-off-by: Lv Zheng 
Signed-off-by: Rafael J. Wysocki 
Signed-off-by: Greg Kroah-Hartman

ACPICA: Debugger: Fix dead lock issue ocurred in single stepping mode

2015-10-22T00:05:06+00:00

ACPICA commit 35273add90da19cd8790fdb5735f52e3c9861684

When single step execution is not ended, executing another control methods
leads to dead locks around interpreter lock/namespace lock/method
serialization lock. So we should only allow one execution from the debugger
at same time. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/35273add
Signed-off-by: Lv Zheng 
Signed-off-by: Bob Moore 
Signed-off-by: Rafael J. Wysocki

ACPI: Enable build of AML interpreter debugger

2015-10-22T00:05:05+00:00

This patch enables ACPICA debugger files using a configurable
CONFIG_ACPI_DEBUGGER configuration item. Those debugger related code that
was originally masked as ACPI_FUTURE_USAGE now gets unmasked.

Necessary OSL stubs are also added in this patch:
1. acpi_os_readable(): This should be arch specific in Linux, while this
    patch doesn't introduce real implementation and a complex mechanism to
    allow architecture specific acpi_os_readable() to be implemented to
    validate the address. It may be done by future commits.
2. acpi_os_get_line(): This is used to obtain debugger command input. This
    patch only introduces a simple KDB concept example in it and the
    example should be co-working with the code implemented in
    acpi_os_printf(). Since this KDB example won't be compiled unless
    ENABLE_DEBUGGER is defined and it seems Linux has already stopped to
    use ENABLE_DEBUGGER, thus do not expect it can work properly.

This patch also cleans up all other ACPI_FUTURE_USAGE surroundings
accordingly.
1. Since linkage error can be automatically detected, declaration in the
   headers needn't be surrounded by ACPI_FUTURE_USAGE.
   So only the following separate exported fuction bodies are masked by
   this macro (other exported fucntions may have already been masked at
   entire module level via drivers/acpi/acpica/Makefile):
     acpi_install_exception_handler()
     acpi_subsystem_status()
     acpi_get_system_info()
     acpi_get_statistics()
     acpi_install_initialization_handler()
2. Since strip can automatically zap the no-user functions, functions that
   are not marked with ACPI_EXPORT_SYMBOL() needn't get surrounded by
   ACPI_FUTURE_USAGE.
   So the following function which is not used by Linux kernel now won't
   get surrounded by this macro:
     acpi_ps_get_name()

Signed-off-by: Lv Zheng 
Signed-off-by: Rafael J. Wysocki

ACPICA: Debugger: Add thread ID support so that single step mode can only apply to the debugger thread

2015-10-22T00:05:05+00:00

When the debugger is running in the kernel mode, acpi_db_single_step() may
also be invoked by the kernel runtime code path but the single stepping
command prompt may be erronously logged as the kernel logs and runtime code
path cannot proceed.

This patch fixes this issue by adding acpi_gbl_db_thread_id for the debugger
thread and preventing acpi_db_single_step() to be invoked from other threads.

It is not suitable to add acpi_thread_id parameter for acpi_os_execute() as
the function may be implemented as work queue on some hosts. So it is
better to let the hosts invoke acpi_set_debugger_thread_id(). Currently
acpiexec is not configured as DEBUGGER_MULTI_THREADED, but we can do this.
When we do this, it is better to invoke acpi_set_debugger_thread_id() in
acpi_os_execute() when the execution type is OSL_DEBUGGER_MAIN_THREAD. The
support should look like:
  create_thread(&tid);
  if (type == OSL_DEBUGGER_MAIN_THREAD)
      acpi_set_debugger_thread_id(tid);
  resume_thread(tid);
Similarly, semop() may be used for pthread implementation. But this patch
simply skips debugger thread ID check for application instead of
introducing such complications as there is no need to skip
acpi_db_single_step() for an application debugger - acpiexec.

Note that the debugger thread ID can also be used by acpi_os_printf() to
filter out debugger output. Lv Zheng.

Signed-off-by: Lv Zheng 
Signed-off-by: Rafael J. Wysocki

ACPICA: Debugger: Fix "terminate" command by cleaning up subsystem shutdown logic

2015-10-22T00:05:05+00:00

ACPICA commit 7e823714911480be47e310fb1b3590d289b9fd99

Segmentation fault can be seen for executing the "terminate" command. This
is because acpi_ut_subsystem_shutdown() is errnously called multiple times.

This patch cleans up acpi_ut_subsystem_shutdown() logics to fix this
issue. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/7e823714
Signed-off-by: Lv Zheng 
Signed-off-by: Bob Moore 
Signed-off-by: Rafael J. Wysocki

ACPICA: Debugger: Fix "quit/exit" command by cleaning up user commands termination logic

2015-10-22T00:05:05+00:00

ACPICA commit 0dd68e16274cd38224aa4781eddc57dc2cbaa108

The quit/exit commands shouldn't invoke acpi_terminate_debugger() and
acpi_terminate() right in the user command loop, because when the debugger
exits, the kernel ACPI subsystem shouldn't be terminated (acpi_terminate())
and the debugger should only be terminated by its users
(acpi_terminate_debugger()) rather than being terminated itself. Leaving such
invocations causes kernel panic when the debugger is shipped in the Linux
kernel.

This patch fixes this issue. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/0dd68e16
Signed-off-by: Lv Zheng 
Signed-off-by: Bob Moore 
Signed-off-by: Rafael J. Wysocki

ACPICA: Linuxize: Export debugger files to Linux

2015-10-22T00:04:28+00:00

ACPICA commit bc2d3daa4bd429611451f28800def9fea55e63de

This patch exports debugger files to Linux.

Link: https://github.com/acpica/acpica/commit/bc2d3daa
Signed-off-by: Lv Zheng 
Signed-off-by: Bob Moore 
Signed-off-by: Rafael J. Wysocki

ACPICA: iASL: General cleanup of the file suffix #defines

2015-10-22T00:01:12+00:00

ACPICA commit bed456ed2976bdaafdef406b982fdf6c539befc0

Removed some extraneous defines, reordered others.

Link: https://github.com/acpica/acpica/commit/bed456ed
Signed-off-by: Bob Moore 
Signed-off-by: Lv Zheng 
Signed-off-by: Rafael J. Wysocki

ACPICA: Improve typechecking, both compile-time and runtime

2015-10-22T00:01:12+00:00

ACPICA commit 8d0f96e2a11a4ceabb2cae4b41e0ce1f4d3786b9

Adds much stricter typechecking in the iASL compiler, and
also adds some additional checking in the interpreter.

Link: https://github.com/acpica/acpica/commit/8d0f96e2
Signed-off-by: Bob Moore 
Signed-off-by: Lv Zheng 
Signed-off-by: Rafael J. Wysocki