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authorBob Moore <robert.moore@intel.com>2009-04-22 12:41:27 +0800
committerLen Brown <len.brown@intel.com>2009-05-27 00:30:49 -0400
commit35d7c1cfe5262480d3d8e6ccd7e4caf3a9c8ab39 (patch)
tree6657fe283ca7a2cccdc38e490fca802fba8d39a8 /include/acpi
parent10b6575b5d84d21e2eab01df2284288e5fdf7887 (diff)
downloadop-kernel-dev-35d7c1cfe5262480d3d8e6ccd7e4caf3a9c8ab39.zip
op-kernel-dev-35d7c1cfe5262480d3d8e6ccd7e4caf3a9c8ab39.tar.gz
ACPICA: Cleanup byte/word/dword extraction macros, fix possible warnings
Removed unnecessary masking. For the 64-bit macros, removed the structure overlay. Fixes aliasing warnings seen with gcc 4+ compilers. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/actypes.h20
1 files changed, 6 insertions, 14 deletions
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index f555d927..37ba576 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -429,20 +429,12 @@ typedef unsigned long long acpi_integer;
/* Data manipulation */
-#define ACPI_LOWORD(l) ((u16)(u32)(l))
-#define ACPI_HIWORD(l) ((u16)((((u32)(l)) >> 16) & 0xFFFF))
-#define ACPI_LOBYTE(l) ((u8)(u16)(l))
-#define ACPI_HIBYTE(l) ((u8)((((u16)(l)) >> 8) & 0xFF))
-
-/* Full 64-bit integer must be available on both 32-bit and 64-bit platforms */
-
-struct acpi_integer_overlay {
- u32 lo_dword;
- u32 hi_dword;
-};
-
-#define ACPI_LODWORD(integer) (ACPI_CAST_PTR (struct acpi_integer_overlay, &integer)->lo_dword)
-#define ACPI_HIDWORD(integer) (ACPI_CAST_PTR (struct acpi_integer_overlay, &integer)->hi_dword)
+#define ACPI_LOBYTE(integer) ((u8) (u16)(integer))
+#define ACPI_HIBYTE(integer) ((u8) (((u16)(integer)) >> 8))
+#define ACPI_LOWORD(integer) ((u16) (u32)(integer))
+#define ACPI_HIWORD(integer) ((u16)(((u32)(integer)) >> 16))
+#define ACPI_LODWORD(integer64) ((u32) (u64)(integer64))
+#define ACPI_HIDWORD(integer64) ((u32)(((u64)(integer64)) >> 32))
#define ACPI_SET_BIT(target,bit) ((target) |= (bit))
#define ACPI_CLEAR_BIT(target,bit) ((target) &= ~(bit))
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