Merge tag 'acpi-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These update ACPICA to upstream revision 20170831, fix APEI to use the
  fixmap instead of ioremap_page_range(), add an operation region driver
  for TI PMIC TPS68470, add support for PCC subspace IDs to the ACPI
  CPPC driver, fix a few assorted issues and clean up some code.

  Specifics:

   - Update the ACPICA code to upstream revision 20170831 including
      * PDTT table header support (Bob Moore).
      * Cleanup and extension of internal string-to-integer conversion
        functions (Bob Moore).
      * Support for 64-bit hardware accesses (Lv Zheng).
      * ACPI PM Timer code adjustment to deal with 64-bit return values
        of acpi_hw_read() (Bob Moore).
      * Support for deferred table verification in acpiexec (Lv Zheng).

   - Fix APEI to use the fixmap instead of ioremap_page_range() which
     cannot work correctly the way the code in there attempted to use it
     and drop some code that's not necessary any more after that change
     (James Morse).

   - Clean up the APEI support code and make it use 64-bit timestamps
     (Arnd Bergmann, Dongjiu Geng, Jan Beulich).

   - Add operation region driver for TI PMIC TPS68470 (Rajmohan Mani).

   - Add support for PCC subspace IDs to the ACPI CPPC driver (George
     Cherian).

   - Fix an ACPI EC driver regression related to the handling of EC
     events during the "noirq" phases of system suspend/resume (Lv
     Zheng).

   - Delay the initialization of the lid state in the ACPI button driver
     to fix issues appearing on some systems (Hans de Goede).

   - Extend the KIOX000A "device always present" quirk to cover all
     affected BIOS versions (Hans de Goede).

   - Clean up some code in the ACPI core and drivers (Colin Ian King,
     Gustavo Silva)"

* tag 'acpi-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (24 commits)
  ACPI: Mark expected switch fall-throughs
  ACPI / LPSS: Remove redundant initialization of clk
  ACPI / CPPC: Make CPPC ACPI driver aware of PCC subspace IDs
  mailbox: PCC: Move the MAX_PCC_SUBSPACES definition to header file
  ACPI / sysfs: Make function param_set_trace_method_name() static
  ACPI / button: Delay acpi_lid_initialize_state() until first user space open
  ACPI / EC: Fix regression related to triggering source of EC event handling
  APEI / ERST: use 64-bit timestamps
  ACPI / APEI: Remove arch_apei_flush_tlb_one()
  arm64: mm: Remove arch_apei_flush_tlb_one()
  ACPI / APEI: Remove ghes_ioremap_area
  ACPI / APEI: Replace ioremap_page_range() with fixmap
  ACPI / APEI: remove the unused dead-code for SEA/NMI notification type
  ACPI / x86: Extend KIOX000A quirk to cover all affected BIOS versions
  ACPI / APEI: adjust a local variable type in ghes_ioremap_pfn_irq()
  ACPICA: Update version to 20170831
  ACPICA: Update acpi_get_timer for 64-bit interface to acpi_hw_read
  ACPICA: String conversions: Update to add new behaviors
  ACPICA: String conversions: Cleanup/format comments. No functional changes
  ACPICA: Restructure/cleanup all string-to-integer conversion functions
  ...

1 files changed, 18 insertions, 12 deletions

diff --git a/drivers/acpi/acpica/exconvrt.c b/drivers/acpi/acpica/exconvrt.c
index f71028e334ee..23ebadb06a95 100644
--- a/drivers/acpi/acpica/exconvrt.c
+++ b/drivers/acpi/acpica/exconvrt.c
@@ -57,10 +57,10 @@ acpi_ex_convert_to_ascii(u64 integer, u16 base, u8 *string, u8 max_length);
  *
  * FUNCTION:    acpi_ex_convert_to_integer
  *
- * PARAMETERS:  obj_desc        - Object to be converted. Must be an
- *                                Integer, Buffer, or String
- *              result_desc     - Where the new Integer object is returned
- *              flags           - Used for string conversion
+ * PARAMETERS:  obj_desc            - Object to be converted. Must be an
+ *                                    Integer, Buffer, or String
+ *              result_desc         - Where the new Integer object is returned
+ *              implicit_conversion - Used for string conversion
  *
  * RETURN:      Status
  *
@@ -70,14 +70,14 @@ acpi_ex_convert_to_ascii(u64 integer, u16 base, u8 *string, u8 max_length);
 
 acpi_status
 acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
-			   union acpi_operand_object **result_desc, u32 flags)
+			   union acpi_operand_object **result_desc,
+			   u32 implicit_conversion)
 {
 	union acpi_operand_object *return_desc;
 	u8 *pointer;
 	u64 result;
 	u32 i;
 	u32 count;
-	acpi_status status;
 
 	ACPI_FUNCTION_TRACE_PTR(ex_convert_to_integer, obj_desc);
 
@@ -123,12 +123,18 @@ acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
 		 * hexadecimal as per the ACPI specification. The only exception (as
 		 * of ACPI 3.0) is that the to_integer() operator allows both decimal
 		 * and hexadecimal strings (hex prefixed with "0x").
+		 *
+		 * Explicit conversion is used only by to_integer.
+		 * All other string-to-integer conversions are implicit conversions.
 		 */
-		status = acpi_ut_strtoul64(ACPI_CAST_PTR(char, pointer),
-					   (acpi_gbl_integer_byte_width |
-					    flags), &result);
-		if (ACPI_FAILURE(status)) {
-			return_ACPI_STATUS(status);
+		if (implicit_conversion) {
+			result =
+			    acpi_ut_implicit_strtoul64(ACPI_CAST_PTR
+						       (char, pointer));
+		} else {
+			result =
+			    acpi_ut_explicit_strtoul64(ACPI_CAST_PTR
+						       (char, pointer));
 		}
 		break;
 
@@ -631,7 +637,7 @@ acpi_ex_convert_to_target_type(acpi_object_type destination_type,
 			 */
 			status =
 			    acpi_ex_convert_to_integer(source_desc, result_desc,
-						       ACPI_STRTOUL_BASE16);
+						       ACPI_IMPLICIT_CONVERSION);
 			break;
 
 		case ACPI_TYPE_STRING: