From 0ee0d34985ceffe4036319e1e46df8bff591b9e3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 15 Apr 2015 04:00:27 +0200 Subject: [PATCH] ACPICA: Store GPE register enable masks upfront It is reported that ACPI interrupts do not work any more on Dell Latitude D600 after commit c50f13c672df (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 Fixes: c50f13c672df (ACPICA: Save current masks of enabled GPEs after enable register writes) Cc: 3.19+ # 3.19+ Signed-off-by: Rafael J. Wysocki --- Reading git-format-patch failed