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authorLin Ming <ming.m.lin@intel.com>2012-04-23 09:03:49 +0800
committerLen Brown <len.brown@intel.com>2012-05-05 01:19:52 -0400
commit1cc0c998fdf2cb665d625fb565a0d6db5c81c639 (patch)
tree2768315b4d2217ea16082947bf995edfc40d5faf /include
parentec612fcf43e09f5e05d37baf4d3f138b3fcc2f3d (diff)
downloadlinaro-lsk-1cc0c998fdf2cb665d625fb565a0d6db5c81c639.tar.gz
ACPI: Fix D3hot v D3cold confusion
Before this patch, ACPI_STATE_D3 incorrectly referenced D3hot in some places, but D3cold in other places. After this patch, ACPI_STATE_D3 always means ACPI_STATE_D3_COLD; and all references to D3hot use ACPI_STATE_D3_HOT. ACPI's _PR3 method is used to enter both D3hot and D3cold states. What distinguishes D3hot from D3cold is the presence _PR3 (Power Resources for D3hot) If these resources are all ON, then the state is D3hot. If _PR3 is not present, or all _PR0 resources for the devices are OFF, then the state is D3cold. This patch applies after Linux-3.4-rc1. A future syntax cleanup may remove ACPI_STATE_D3 to emphasize that it always means ACPI_STATE_D3_COLD. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Reviewed-by: Aaron Lu <aaron.lu@amd.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include')
-rw-r--r--include/acpi/actypes.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index eba66043cf1..e8bcc4742e0 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -499,9 +499,10 @@ typedef u64 acpi_integer;
#define ACPI_STATE_D0 (u8) 0
#define ACPI_STATE_D1 (u8) 1
#define ACPI_STATE_D2 (u8) 2
-#define ACPI_STATE_D3 (u8) 3
-#define ACPI_STATE_D3_COLD (u8) 4
-#define ACPI_D_STATES_MAX ACPI_STATE_D3_COLD
+#define ACPI_STATE_D3_HOT (u8) 3
+#define ACPI_STATE_D3 (u8) 4
+#define ACPI_STATE_D3_COLD ACPI_STATE_D3
+#define ACPI_D_STATES_MAX ACPI_STATE_D3
#define ACPI_D_STATE_COUNT 5
#define ACPI_STATE_C0 (u8) 0