[RFC,2/3] ACPI: Modify GPE consumers to use GPE refcounting

Commit Message

Rafael Wysocki Feb. 7, 2010, 2:23 a.m. UTC

None

Patch

Index: linux-2.6/drivers/acpi/button.c
===================================================================
--- linux-2.6.orig/drivers/acpi/button.c
+++ linux-2.6/drivers/acpi/button.c
@@ -427,6 +427,9 @@  static int acpi_button_add(struct acpi_d
 				  ACPI_GPE_TYPE_WAKE_RUN);
 		acpi_enable_gpe(device->wakeup.gpe_device,
 				device->wakeup.gpe_number);
+		acpi_get_gpe(device->wakeup.gpe_device,
+				device->wakeup.gpe_number,
+				ACPI_GPE_TYPE_WAKE_RUN);
 		device->wakeup.state.enabled = 1;
 	}
 
@@ -446,6 +449,13 @@  static int acpi_button_remove(struct acp
 {
 	struct acpi_button *button = acpi_driver_data(device);
 
+	if (device->wakeup.flags.valid) {
+		acpi_put_gpe(device->wakeup.gpe_device,
+				device->wakeup.gpe_number,
+				ACPI_GPE_TYPE_WAKE_RUN);
+		device->wakeup.state.enabled = 0;
+	}
+
 	acpi_button_remove_fs(device);
 	input_unregister_device(button->input);
 	kfree(button);
Index: linux-2.6/drivers/acpi/ec.c
===================================================================
--- linux-2.6.orig/drivers/acpi/ec.c
+++ linux-2.6/drivers/acpi/ec.c
@@ -789,7 +789,7 @@  static int ec_install_handlers(struct ac
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 	acpi_set_gpe_type(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
-	acpi_enable_gpe(NULL, ec->gpe);
+	acpi_get_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
 	status = acpi_install_address_space_handler(ec->handle,
 						    ACPI_ADR_SPACE_EC,
 						    &acpi_ec_space_handler,
@@ -806,6 +806,7 @@  static int ec_install_handlers(struct ac
 		} else {
 			acpi_remove_gpe_handler(NULL, ec->gpe,
 				&acpi_ec_gpe_handler);
+			acpi_put_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
 			return -ENODEV;
 		}
 	}
@@ -816,6 +817,7 @@  static int ec_install_handlers(struct ac
 
 static void ec_remove_handlers(struct acpi_ec *ec)
 {
+	acpi_put_gpe(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
 	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");
Index: linux-2.6/drivers/acpi/wakeup.c
===================================================================
--- linux-2.6.orig/drivers/acpi/wakeup.c
+++ linux-2.6/drivers/acpi/wakeup.c
@@ -78,9 +78,15 @@  void acpi_enable_wakeup_device(u8 sleep_
 			}
 			continue;
 		}
+		/*
+		 * If the device is run_wake, the GPE is supposed to be enabled,
+		 * so we don't need to enable it once again.
+		 */
 		if (!dev->wakeup.flags.run_wake)
 			acpi_enable_gpe(dev->wakeup.gpe_device,
 					dev->wakeup.gpe_number);
+		acpi_get_gpe(dev->wakeup.gpe_device,
+				dev->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE);
 	}
 }
 
@@ -121,6 +127,8 @@  void acpi_disable_wakeup_device(u8 sleep
 			acpi_clear_gpe(dev->wakeup.gpe_device,
 				       dev->wakeup.gpe_number, ACPI_NOT_ISR);
 		}
+		acpi_put_gpe(dev->wakeup.gpe_device,
+				dev->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE);
 	}
 }
 
@@ -141,6 +149,8 @@  int __init acpi_wakeup_device_init(void)
 				  ACPI_GPE_TYPE_WAKE_RUN);
 		acpi_enable_gpe(dev->wakeup.gpe_device,
 				dev->wakeup.gpe_number);
+		acpi_get_gpe(dev->wakeup.gpe_device,
+				dev->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE);
 		dev->wakeup.state.enabled = 1;
 	}
 	mutex_unlock(&acpi_device_lock);