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author | Lv Zheng <lv.zheng@intel.com> | 2014-03-24 07:48:45 +0100 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-03-26 16:25:59 +0100 |
commit | e2b8ddcc6b3fbb860e15c5d52455735e128326aa (patch) | |
tree | bf13dd14aeb07496271de07f7392b470fd6a12be /drivers/firewire | |
parent | ACPICA: Revert "Headers: Deploy #pragma pack (push) and (pop)." (diff) | |
download | linux-e2b8ddcc6b3fbb860e15c5d52455735e128326aa.tar.xz linux-e2b8ddcc6b3fbb860e15c5d52455735e128326aa.zip |
ACPICA: Remove global option to serialize all control methods.
According to the reports, the "acpi_serialize" mechanism is broken as:
A. The parallel method calls can still happen when the interpreter lock is
released under the following conditions:
1. External callbacks are invoked, for example, by the region handlers,
the exception handlers, etc.;
2. Module level execution is performed when Load/LoadTable opcodes are
executed, and
3. The _REG control methods are invoked to complete the region
registrations.
B. For the following situations, the interpreter lock need to be released
even for a serialized method while currently, the lock-releasing
operation is marked as a no-op by
acpi_ex_relinquish/reacquire_interpreter() when this mechanism is
enabled:
1. Wait opcode is executed,
2. Acquire opcode is executed, and
3. Sleep opcode is executed.
This patch removes this mechanism and the internal
acpi_ex_relinquish/reacquire_interpreter() APIs. Lv Zheng.
References: https://bugzilla.kernel.org/show_bug.cgi?id=52191
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>
Diffstat (limited to 'drivers/firewire')
0 files changed, 0 insertions, 0 deletions