diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c
index ae597c0ab53f..f67562ea0010 100644
--- a/drivers/acpi/acpica/hwxface.c
+++ b/drivers/acpi/acpica/hwxface.c
@@ -107,19 +107,18 @@ acpi_status acpi_read(u32 *value, struct acpi_generic_address *reg)
 	ACPI_FUNCTION_NAME(acpi_read);
 
 	/*
-	 * Must have a valid pointer to a GAS structure, and
-	 * a non-zero address within. However, don't return an error
-	 * because the PM1A/B code must not fail if B isn't present.
+	 * Must have a valid pointer to a GAS structure, and a non-zero address
+	 * within.
 	 */
 	if (!reg) {
-		return (AE_OK);
+		return (AE_BAD_PARAMETER);
 	}
 
 	/* Get a local copy of the address. Handles possible alignment issues */
 
 	ACPI_MOVE_64_TO_64(&address, &reg->address);
 	if (!address) {
-		return (AE_OK);
+		return (AE_BAD_ADDRESS);
 	}
 
 	/* Supported widths are 8/16/32 */
@@ -187,19 +186,18 @@ acpi_status acpi_write(u32 value, struct acpi_generic_address *reg)
 	ACPI_FUNCTION_NAME(acpi_write);
 
 	/*
-	 * Must have a valid pointer to a GAS structure, and
-	 * a non-zero address within. However, don't return an error
-	 * because the PM1A/B code must not fail if B isn't present.
+	 * Must have a valid pointer to a GAS structure, and a non-zero address
+	 * within.
 	 */
 	if (!reg) {
-		return (AE_OK);
+		return (AE_BAD_PARAMETER);
 	}
 
 	/* Get a local copy of the address. Handles possible alignment issues */
 
 	ACPI_MOVE_64_TO_64(&address, &reg->address);
 	if (!address) {
-		return (AE_OK);
+		return (AE_BAD_ADDRESS);
 	}
 
 	/* Supported widths are 8/16/32 */
diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h
index eda04546cdf6..473d584b1d31 100644
--- a/include/acpi/acexcep.h
+++ b/include/acpi/acexcep.h
@@ -103,8 +103,9 @@
 #define AE_BAD_OCTAL_CONSTANT           (acpi_status) (0x0006 | AE_CODE_PROGRAMMER)
 #define AE_BAD_DECIMAL_CONSTANT         (acpi_status) (0x0007 | AE_CODE_PROGRAMMER)
 #define AE_MISSING_ARGUMENTS            (acpi_status) (0x0008 | AE_CODE_PROGRAMMER)
+#define AE_BAD_ADDRESS                  (acpi_status) (0x0009 | AE_CODE_PROGRAMMER)
 
-#define AE_CODE_PGM_MAX                 0x0008
+#define AE_CODE_PGM_MAX                 0x0009
 
 /*
  * Acpi table exceptions
@@ -224,7 +225,8 @@ char const *acpi_gbl_exception_names_pgm[] = {
 	"AE_BAD_HEX_CONSTANT",
 	"AE_BAD_OCTAL_CONSTANT",
 	"AE_BAD_DECIMAL_CONSTANT",
-	"AE_MISSING_ARGUMENTS"
+	"AE_MISSING_ARGUMENTS",
+	"AE_BAD_ADDRESS"
 };
 
 char const *acpi_gbl_exception_names_tbl[] = {