[ACPI] include CONFIG_ACPI_RELAXED_AML code always

  add acpi=strict option to disable platform workarounds

Documentation/kernel-parameters.txt

@@ -86,10 +86,13 @@ running once the system is up.
 			See also Documentation/scsi/ncr53c7xx.txt.
 
 	acpi=		[HW,ACPI] Advanced Configuration and Power Interface 
-			Format: { force | off | ht }
+			Format: { force | off | ht | strict }
 			force -- enables ACPI for systems with default off
 			off -- disabled ACPI for systems with default on
 			ht -- run only enough ACPI to enable Hyper Threading
+			strict --  Be less tolerant of platforms that are not
+				strictly ACPI specification compliant.
+
 			See also Documentation/pm.txt.
  
 	acpi_pic_sci=	[HW,ACPI] ACPI System Control Interrupt trigger mode

arch/i386/kernel/acpi/boot.c

@@ -42,11 +42,12 @@
 
 #define PREFIX			"ACPI: "
 
-int acpi_noirq __initdata = 0;	/* skip ACPI IRQ initialization */
+int acpi_noirq __initdata;	/* skip ACPI IRQ initialization */
 int acpi_ht __initdata = 1;	/* enable HT */
 
 int acpi_lapic;
 int acpi_ioapic;
+int acpi_strict;
 
 /* --------------------------------------------------------------------------
                               Boot-time Configuration

arch/i386/kernel/setup.c

@@ -562,6 +562,11 @@ static void __init parse_cmdline_early (char ** cmdline_p)
 			acpi_disabled = 0;
 		}
 
+		/* acpi=strict disables out-of-spec workarounds */
+		else if (!memcmp(from, "acpi=strict", 11)) {
+			acpi_strict = 1;
+		}
+
 		/* Limit ACPI just to boot-time to enable HT */
 		else if (!memcmp(from, "acpi=ht", 7)) {
 			acpi_ht = 1;

arch/x86_64/kernel/acpi/boot.c

@@ -48,11 +48,12 @@
 
 #define PREFIX			"ACPI: "
 
-int acpi_noirq __initdata = 0;	/* skip ACPI IRQ initialization */
+int acpi_noirq __initdata;	/* skip ACPI IRQ initialization */
 int acpi_ht __initdata = 1;	/* enable HT */
 
 int acpi_lapic;
 int acpi_ioapic;
+int acpi_strict;
 
 /* --------------------------------------------------------------------------
                               Boot-time Configuration

drivers/acpi/Kconfig

@@ -251,17 +251,5 @@ config ACPI_SYSTEM
 	  This driver will enable your system to shut down using ACPI, and
 	  dump your ACPI DSDT table using /proc/acpi/dsdt.
 
-config ACPI_RELAXED_AML
-	bool "Relaxed AML"
-	depends on ACPI_INTERPRETER
-	depends on !IA64_SGI_SN
-	default n
-	help
-	  If you say `Y' here, the ACPI interpreter will relax its checking
-	  for valid AML and will ignore some AML mistakes, such as off-by-one
-	  errors in region sizes.  Some laptops may require this option.  In
-	  particular, many Toshiba laptops require this for correct operation
-	  of the AC module.
-
 endmenu
 

drivers/acpi/executer/exfldio.c

@@ -154,8 +154,7 @@ acpi_ex_setup_region (
 			field_datum_byte_offset, obj_desc->common_field.access_byte_width,
 			acpi_ut_get_node_name (rgn_desc->region.node), rgn_desc->region.length));
 
-		#ifdef CONFIG_ACPI_RELAXED_AML
-		{
+		if (!acpi_strict) {
 			/*
 			 * Allow access to the field if it is within the region size
 			 * rounded up to a multiple of the access byte width.  This
@@ -186,9 +185,9 @@ acpi_ex_setup_region (
 				return_ACPI_STATUS (AE_OK);
 			}
 		}
-		#else
+		else {
 			return_ACPI_STATUS (AE_AML_REGION_LIMIT);
-		#endif
+		}
 	}
 
 	return_ACPI_STATUS (AE_OK);

include/asm-i386/acpi.h

@@ -110,6 +110,7 @@
 extern int acpi_lapic;
 extern int acpi_ioapic;
 extern int acpi_noirq;
+extern int acpi_strict;
 
 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
 #define FIX_ACPI_PAGES 4

include/asm-ia64/acpi.h

@@ -86,6 +86,8 @@ ia64_acpi_release_global_lock (unsigned int *lock)
 #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq)				\
 	((Acq) = ia64_acpi_release_global_lock((unsigned int *) GLptr))
 
+#define acpi_strict 1	/* no ACPI spec workarounds on IA64 */
+
 const char *acpi_get_sysname (void);
 int acpi_request_vector (u32 int_type);
 int acpi_register_irq (u32 gsi, u32 polarity, u32 trigger);

include/asm-x86_64/acpi.h

@@ -104,6 +104,7 @@ __acpi_release_global_lock (unsigned int *lock)
 extern int acpi_lapic;
 extern int acpi_ioapic;
 extern int acpi_noirq;
+extern int acpi_strict;
 
 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
 #define FIX_ACPI_PAGES 4