[1/2] ACPICA: Introduce acpi_any_gpe_status_set()

Index: linux-pm/drivers/acpi/acpica/hwgpe.c
===================================================================
--- linux-pm.orig/drivers/acpi/acpica/hwgpe.c
+++ linux-pm/drivers/acpi/acpica/hwgpe.c
@@ -446,6 +446,53 @@  acpi_hw_enable_wakeup_gpe_block(struct a
 
 /******************************************************************************
  *
+ * FUNCTION:    acpi_hw_get_gpe_block_status
+ *
+ * PARAMETERS:  gpe_xrupt_info      - GPE Interrupt info
+ *              gpe_block           - Gpe Block info
+ *
+ * RETURN:      Success
+ *
+ * DESCRIPTION: Produce a combined GPE status bits mask for the given block.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_hw_get_gpe_block_status(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+			     struct acpi_gpe_block_info *gpe_block,
+			     void *ret_ptr)
+{
+	struct acpi_gpe_register_info *gpe_register_info;
+	u64 in_enable, in_status;
+	acpi_status status;
+	u8 *ret = ret_ptr;
+	u32 i;
+
+	/* Examine each GPE Register within the block */
+
+	for (i = 0; i < gpe_block->register_count; i++) {
+		gpe_register_info = &gpe_block->register_info[i];
+
+		status = acpi_hw_read(&in_enable,
+				      &gpe_register_info->enable_address);
+		if (ACPI_FAILURE(status)) {
+			continue;
+		}
+
+		status = acpi_hw_read(&in_status,
+				      &gpe_register_info->status_address);
+		if (ACPI_FAILURE(status)) {
+			continue;
+		}
+
+		*ret |= in_enable & in_status;
+	}
+
+	return (AE_OK);
+}
+
+/******************************************************************************
+ *
  * FUNCTION:    acpi_hw_disable_all_gpes
  *
  * PARAMETERS:  None
@@ -510,4 +557,28 @@  acpi_status acpi_hw_enable_all_wakeup_gp
 	return_ACPI_STATUS(status);
 }
 
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_check_all_gpes
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Combined status of all GPEs
+ *
+ * DESCRIPTION: Check all enabled GPEs in all GPE blocks and return TRUE if the
+ *              status bit is set for at least one of them of FALSE otherwise.
+ *
+ ******************************************************************************/
+
+u8 acpi_hw_check_all_gpes(void)
+{
+	u8 ret = 0;
+
+	ACPI_FUNCTION_TRACE(acpi_hw_check_all_gpes);
+
+	(void)acpi_ev_walk_gpe_list(acpi_hw_get_gpe_block_status, &ret);
+
+	return (ret != 0);
+}
+
 #endif				/* !ACPI_REDUCED_HARDWARE */
Index: linux-pm/drivers/acpi/acpica/achware.h
===================================================================
--- linux-pm.orig/drivers/acpi/acpica/achware.h
+++ linux-pm/drivers/acpi/acpica/achware.h
@@ -101,6 +101,8 @@  acpi_status acpi_hw_enable_all_runtime_g
 
 acpi_status acpi_hw_enable_all_wakeup_gpes(void);
 
+u8 acpi_hw_check_all_gpes(void);
+
 acpi_status
 acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
 				 struct acpi_gpe_block_info *gpe_block,
Index: linux-pm/drivers/acpi/acpica/evxfgpe.c
===================================================================
--- linux-pm.orig/drivers/acpi/acpica/evxfgpe.c
+++ linux-pm/drivers/acpi/acpica/evxfgpe.c
@@ -795,6 +795,38 @@  acpi_status acpi_enable_all_wakeup_gpes(
 
 ACPI_EXPORT_SYMBOL(acpi_enable_all_wakeup_gpes)
 
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_any_gpe_status_set
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Whether or not the status bit is set for any GPE
+ *
+ * DESCRIPTION: Check the status bits of all enabled GPEs and return TRUE if any
+ *              of them is set or FALSE otherwise.
+ *
+ ******************************************************************************/
+u32 acpi_any_gpe_status_set(void)
+{
+	acpi_status status;
+	u8 ret;
+
+	ACPI_FUNCTION_TRACE(acpi_any_gpe_status_set);
+
+	status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
+	if (ACPI_FAILURE(status)) {
+		return (FALSE);
+	}
+
+	ret = acpi_hw_check_all_gpes();
+	(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
+
+	return (ret);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_any_gpe_status_set)
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_install_gpe_block
Index: linux-pm/include/acpi/acpixf.h
===================================================================
--- linux-pm.orig/include/acpi/acpixf.h
+++ linux-pm/include/acpi/acpixf.h
@@ -752,6 +752,7 @@  ACPI_HW_DEPENDENT_RETURN_UINT32(u32 acpi
 ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable_all_gpes(void))
 ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_runtime_gpes(void))
 ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_wakeup_gpes(void))
+ACPI_HW_DEPENDENT_RETURN_UINT32(u32 acpi_any_gpe_status_set(void))
 
 ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
 				acpi_get_gpe_device(u32 gpe_index,