ACPICA: Remove wakeup GPE reference counting which is not used

After the previous patch that introduced acpi_gpe_wakeup() and
modified the ACPI suspend and wakeup code to use it, the third
argument of acpi_{enable|disable}_gpe() and the GPE wakeup
reference counter are not necessary any more.  Remove them and
modify all of the users of acpi_{enable|disable}_gpe()
accordingly.  Also drop GPE type constants that aren't used
any more.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
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>

9 files changed, 46 insertions, 121 deletions

diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index c3f43da..a561944 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -78,7 +78,7 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node *node,
 u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list);
 
 acpi_status
-acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info);
+acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info);
 
 struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
 						       u32 gpe_number);
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index eb2d420..1ee0bcf 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -429,7 +429,6 @@ struct acpi_gpe_event_info {
 	u8 flags;		/* Misc info about this GPE */
 	u8 gpe_number;		/* This GPE */
 	u8 runtime_count;	/* References to a run GPE */
-	u8 wakeup_count;	/* References to a wake GPE */
 };
 
 /* Information about a GPE register pair, one per each status/enable pair in an array */
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index d24d7d3..9413ac6 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -54,24 +54,24 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context);
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ev_update_gpe_enable_masks
+ * FUNCTION:    acpi_ev_update_gpe_enable_mask
  *
  * PARAMETERS:  gpe_event_info          - GPE to update
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Updates GPE register enable masks based upon whether there are
- *              references (either wake or run) to this GPE
+ * DESCRIPTION: Updates GPE register enable mask based upon whether there are
+ *              runtime references to this GPE
  *
  ******************************************************************************/
 
 acpi_status
-acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info)
+acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info)
 {
 	struct acpi_gpe_register_info *gpe_register_info;
 	u32 register_bit;
 
-	ACPI_FUNCTION_TRACE(ev_update_gpe_enable_masks);
+	ACPI_FUNCTION_TRACE(ev_update_gpe_enable_mask);
 
 	gpe_register_info = gpe_event_info->register_info;
 	if (!gpe_register_info) {
@@ -81,19 +81,14 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info)
 	register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info,
 						gpe_register_info);
 
-	/* Clear the wake/run bits up front */
+	/* Clear the run bit up front */
 
-	ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake, register_bit);
 	ACPI_CLEAR_BIT(gpe_register_info->enable_for_run, register_bit);
 
-	/* Set the mask bits only if there are references to this GPE */
+	/* Set the mask bit only if there are references to this GPE */
 
 	if (gpe_event_info->runtime_count) {
-		ACPI_SET_BIT(gpe_register_info->enable_for_run, register_bit);
-	}
-
-	if (gpe_event_info->wakeup_count) {
-		ACPI_SET_BIT(gpe_register_info->enable_for_wake, register_bit);
+		ACPI_SET_BIT(gpe_register_info->enable_for_run, (u8)register_bit);
 	}
 
 	return_ACPI_STATUS(AE_OK);
diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c
index 341a38c..77e8630 100644
--- a/drivers/acpi/acpica/evgpeblk.c
+++ b/drivers/acpi/acpica/evgpeblk.c
@@ -529,8 +529,7 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
 
 			/* Enable this GPE */
 
-			status = acpi_enable_gpe(gpe_device, gpe_number,
-						 ACPI_GPE_TYPE_RUNTIME);
+			status = acpi_enable_gpe(gpe_device, gpe_number);
 			if (ACPI_FAILURE(status)) {
 				ACPI_EXCEPTION((AE_INFO, status,
 						"Could not enable GPE 0x%02X",
diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c
index 3f6c2d2..8db9e07 100644
--- a/drivers/acpi/acpica/evgpeinit.c
+++ b/drivers/acpi/acpica/evgpeinit.c
@@ -482,8 +482,7 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
 				gpe_device = NULL;
 			}
 
-			status = acpi_enable_gpe(gpe_device, gpe_number,
-						 ACPI_GPE_TYPE_RUNTIME);
+			status = acpi_enable_gpe(gpe_device, gpe_number);
 			if (ACPI_FAILURE(status)) {
 				ACPI_EXCEPTION((AE_INFO, status,
 						"Could not enable GPE 0x%02X",
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index d6a6d4a..467fde9 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -352,12 +352,13 @@ acpi_status acpi_gpe_wakeup(acpi_handle gpe_device, u32 gpe_number, u8 action)
 
 	switch (action) {
 	case ACPI_GPE_ENABLE:
-		ACPI_SET_BIT(gpe_register_info->enable_for_wake, register_bit);
+		ACPI_SET_BIT(gpe_register_info->enable_for_wake,
+			     (u8)register_bit);
 		break;
 
 	case ACPI_GPE_DISABLE:
 		ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
-			       register_bit);
+			       (u8)register_bit);
 		break;
 
 	default:
@@ -379,17 +380,14 @@ ACPI_EXPORT_SYMBOL(acpi_gpe_wakeup)
  *
  * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
  *              gpe_number      - GPE level within the GPE block
- *              gpe_type        - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE
- *                                or both
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
- *              hardware-enabled (for runtime GPEs), or the GPE register mask
- *              is updated (for wake GPEs).
+ *              hardware-enabled.
  *
  ******************************************************************************/
-acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
+acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
 {
 	acpi_status status = AE_OK;
 	struct acpi_gpe_event_info *gpe_event_info;
@@ -397,12 +395,6 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
 
 	ACPI_FUNCTION_TRACE(acpi_enable_gpe);
 
-	/* Parameter validation */
-
-	if (!gpe_type || (gpe_type & ~ACPI_GPE_TYPE_WAKE_RUN)) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
 	flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
 
 	/* Ensure that we have a valid GPE number */
@@ -413,46 +405,19 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
 		goto unlock_and_exit;
 	}
 
-	if (gpe_type & ACPI_GPE_TYPE_RUNTIME) {
-		if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
-			status = AE_LIMIT;	/* Too many references */
-			goto unlock_and_exit;
-		}
-
-		gpe_event_info->runtime_count++;
-		if (gpe_event_info->runtime_count == 1) {
-			status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
-			if (ACPI_SUCCESS(status)) {
-				status = acpi_clear_and_enable_gpe(gpe_event_info);
-			}
-
-			if (ACPI_FAILURE(status)) {
-				gpe_event_info->runtime_count--;
-				goto unlock_and_exit;
-			}
-		}
+	if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
+		status = AE_LIMIT;	/* Too many references */
+		goto unlock_and_exit;
 	}
 
-	if (gpe_type & ACPI_GPE_TYPE_WAKE) {
-		/* The GPE must have the ability to wake the system */
-
-		if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) {
-			status = AE_TYPE;
-			goto unlock_and_exit;
-		}
-
-		if (gpe_event_info->wakeup_count == ACPI_UINT8_MAX) {
-			status = AE_LIMIT;	/* Too many references */
-			goto unlock_and_exit;
+	gpe_event_info->runtime_count++;
+	if (gpe_event_info->runtime_count == 1) {
+		status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
+		if (ACPI_SUCCESS(status)) {
+			status = acpi_clear_and_enable_gpe(gpe_event_info);
 		}
-
-		/*
-		 * Update the enable mask on the first wakeup reference. Wake GPEs
-		 * are only hardware-enabled just before sleeping.
-		 */
-		gpe_event_info->wakeup_count++;
-		if (gpe_event_info->wakeup_count == 1) {
-			status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
+		if (ACPI_FAILURE(status)) {
+			gpe_event_info->runtime_count--;
 		}
 	}
 
@@ -468,8 +433,6 @@ ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
  *
  * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
  *              gpe_number      - GPE level within the GPE block
- *              gpe_type        - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE
- *                                or both
  *
  * RETURN:      Status
  *
@@ -478,7 +441,7 @@ ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
  *              the GPE mask bit disabled (for wake GPEs)
  *
  ******************************************************************************/
-acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type)
+acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
 {
 	acpi_status status = AE_OK;
 	struct acpi_gpe_event_info *gpe_event_info;
@@ -486,12 +449,6 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type
 
 	ACPI_FUNCTION_TRACE(acpi_disable_gpe);
 
-	/* Parameter validation */
-
-	if (!gpe_type || (gpe_type & ~ACPI_GPE_TYPE_WAKE_RUN)) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
 	flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
 
 	/* Ensure that we have a valid GPE number */
@@ -504,41 +461,21 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number, u8 gpe_type
 
 	/* Hardware-disable a runtime GPE on removal of the last reference */
 
-	if (gpe_type & ACPI_GPE_TYPE_RUNTIME) {
-		if (!gpe_event_info->runtime_count) {
-			status = AE_LIMIT;	/* There are no references to remove */
-			goto unlock_and_exit;
-		}
-
-		gpe_event_info->runtime_count--;
-		if (!gpe_event_info->runtime_count) {
-			status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
-			if (ACPI_SUCCESS(status)) {
-				status = acpi_hw_low_set_gpe(gpe_event_info,
-							     ACPI_GPE_DISABLE);
-			}
-
-			if (ACPI_FAILURE(status)) {
-				gpe_event_info->runtime_count++;
-				goto unlock_and_exit;
-			}
-		}
+	if (!gpe_event_info->runtime_count) {
+		status = AE_LIMIT;	/* There are no references to remove */
+		goto unlock_and_exit;
 	}
 
-	/*
-	 * Update masks for wake GPE on removal of the last reference.
-	 * No need to hardware-disable wake GPEs here, they are not currently
-	 * enabled.
-	 */
-	if (gpe_type & ACPI_GPE_TYPE_WAKE) {
-		if (!gpe_event_info->wakeup_count) {
-			status = AE_LIMIT;	/* There are no references to remove */
-			goto unlock_and_exit;
+	gpe_event_info->runtime_count--;
+	if (!gpe_event_info->runtime_count) {
+		status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
+		if (ACPI_SUCCESS(status)) {
+			status =
+			    acpi_hw_low_set_gpe(gpe_event_info,
+						ACPI_GPE_DISABLE);
 		}
-
-		gpe_event_info->wakeup_count--;
-		if (!gpe_event_info->wakeup_count) {
-			status = acpi_ev_update_gpe_enable_masks(gpe_event_info);
+		if (ACPI_FAILURE(status)) {
+			gpe_event_info->runtime_count++;
 		}
 	}
 
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 7d857da..1575a9b 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -424,8 +424,7 @@ static int acpi_button_add(struct acpi_device *device)
 	if (device->wakeup.flags.valid) {
 		/* Button's GPE is run-wake GPE */
 		acpi_enable_gpe(device->wakeup.gpe_device,
-				device->wakeup.gpe_number,
-				ACPI_GPE_TYPE_RUNTIME);
+				device->wakeup.gpe_number);
 		device->wakeup.run_wake_count++;
 		device->wakeup.state.enabled = 1;
 	}
@@ -448,8 +447,7 @@ static int acpi_button_remove(struct acpi_device *device, int type)
 
 	if (device->wakeup.flags.valid) {
 		acpi_disable_gpe(device->wakeup.gpe_device,
-				device->wakeup.gpe_number,
-				ACPI_GPE_TYPE_RUNTIME);
+				device->wakeup.gpe_number);
 		device->wakeup.run_wake_count--;
 		device->wakeup.state.enabled = 0;
 	}
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 5f2027d..bf50454 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -822,7 +822,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 
-	acpi_enable_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
+	acpi_enable_gpe(NULL, ec->gpe);
 	status = acpi_install_address_space_handler(ec->handle,
 						    ACPI_ADR_SPACE_EC,
 						    &acpi_ec_space_handler,
@@ -839,7 +839,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
 		} else {
 			acpi_remove_gpe_handler(NULL, ec->gpe,
 				&acpi_ec_gpe_handler);
-			acpi_disable_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
+			acpi_disable_gpe(NULL, ec->gpe);
 			return -ENODEV;
 		}
 	}
@@ -850,7 +850,7 @@ static int ec_install_handlers(struct acpi_ec *ec)
 
 static void ec_remove_handlers(struct acpi_ec *ec)
 {
-	acpi_disable_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
+	acpi_disable_gpe(NULL, ec->gpe);
 	if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle,
 				ACPI_ADR_SPACE_EC, &acpi_ec_space_handler)))
 		pr_err(PREFIX "failed to remove space handler\n");
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index f8db50a..5981bd0 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -388,12 +388,10 @@ static ssize_t counter_set(struct kobject *kobj,
 	if (index < num_gpes) {
 		if (!strcmp(buf, "disable\n") &&
 				(status & ACPI_EVENT_FLAG_ENABLED))
-			result = acpi_disable_gpe(handle, index,
-						ACPI_GPE_TYPE_RUNTIME);
+			result = acpi_disable_gpe(handle, index);
 		else if (!strcmp(buf, "enable\n") &&
 				!(status & ACPI_EVENT_FLAG_ENABLED))
-			result = acpi_enable_gpe(handle, index,
-						ACPI_GPE_TYPE_RUNTIME);
+			result = acpi_enable_gpe(handle, index);
 		else if (!strcmp(buf, "clear\n") &&
 				(status & ACPI_EVENT_FLAG_SET))
 			result = acpi_clear_gpe(handle, index);