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Rafael J. Wysocki authored
It is reported that ACPI interrupts do not work any more on Dell Latitude D600 after commit c50f13c6 (ACPICA: Save current masks of enabled GPEs after enable register writes). The problem turns out to be related to the fact that the enable_mask and enable_for_run GPE bit masks are not in sync (in the absence of any system suspend/resume events) for at least one GPE register on that machine. Address this problem by writing the enable_for_run mask into enable_mask as soon as enable_for_run is updated instead of doing that only after the subsequent register write has succeeded. For consistency, update acpi_hw_gpe_enable_write() to store the bit mask to be written into the GPE register in enable_mask unconditionally before the write. Since the ACPI_GPE_SAVE_MASK flag is not necessary any more after that, drop it along with the symbols depending on it. Reported-and-tested-by:
Jim Bos <jim876@xs4all.nl> Fixes: c50f13c6 (ACPICA: Save current masks of enabled GPEs after enable register writes) Cc: 3.19+ <stable@vger.kernel.org> # 3.19+ Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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