Merge tag 'acpi-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These fix the ACPI EC and AC drivers, the ACPI APEI error injection
  driver and build issues related to the dev_is_pnp() macro referring to
  pnp_bus_type that is not exported to modules.

  Specifics:

   - Fix error handling during EC operation region accesses in the ACPI
     EC driver (Armin Wolf)

   - Fix a memory leak in the APEI error injection driver introduced
     during its converion to a platform driver (Dan Williams)

   - Fix build failures related to the dev_is_pnp() macro by redefining
     it as a proper function and exporting it to modules as appropriate
     and unexport pnp_bus_type which need not be exported any more (Andy
     Shevchenko)

   - Update the ACPI AC driver to use power_supply_changed() to let the
     power supply core handle configuration changes properly (Thomas
     Weißschuh)"

* tag 'acpi-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: AC: Properly notify powermanagement core about changes
  PNP: Hide pnp_bus_type from the non-PNP code
  PNP: Make dev_is_pnp() to be a function and export it for modules
  ACPI: EC: Avoid returning AE_OK on errors in address space handler
  ACPI: EC: Abort address space access upon error
  ACPI: APEI: EINJ: Fix einj_dev release leak

Author: torvalds

drivers/acpi/ac.c

@@ -145,7 +145,7 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
 						  dev_name(&adev->dev), event,
 						  (u32) ac->state);
 		acpi_notifier_call_chain(adev, event, (u32) ac->state);
-		kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);
+		power_supply_changed(ac->charger);
 	}
 }
 
@@ -268,7 +268,7 @@ static int acpi_ac_resume(struct device *dev)
 	if (acpi_ac_get_state(ac))
 		return 0;
 	if (old_state != ac->state)
-		kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);
+		power_supply_changed(ac->charger);
 
 	return 0;
 }

drivers/acpi/apei/einj-core.c

@@ -909,7 +909,7 @@ static void __exit einj_exit(void)
 	if (einj_initialized)
 		platform_driver_unregister(&einj_driver);
 
-	platform_device_del(einj_dev);
+	platform_device_unregister(einj_dev);
 }
 
 module_init(einj_init);

drivers/acpi/ec.c

@@ -1333,10 +1333,13 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 	if (ec->busy_polling || bits > 8)
 		acpi_ec_burst_enable(ec);
 
-	for (i = 0; i < bytes; ++i, ++address, ++value)
+	for (i = 0; i < bytes; ++i, ++address, ++value) {
 		result = (function == ACPI_READ) ?
 			acpi_ec_read(ec, address, value) :
 			acpi_ec_write(ec, address, *value);
+		if (result < 0)
+			break;
+	}
 
 	if (ec->busy_polling || bits > 8)
 		acpi_ec_burst_disable(ec);
@@ -1348,8 +1351,10 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 		return AE_NOT_FOUND;
 	case -ETIME:
 		return AE_TIME;
-	default:
+	case 0:
 		return AE_OK;
+	default:
+		return AE_ERROR;
 	}
 }
 

drivers/acpi/sbs.c

@@ -610,7 +610,7 @@ static void acpi_sbs_callback(void *context)
 	if (sbs->charger_exists) {
 		acpi_ac_get_present(sbs);
 		if (sbs->charger_present != saved_charger_state)
-			kobject_uevent(&sbs->charger->dev.kobj, KOBJ_CHANGE);
+			power_supply_changed(sbs->charger);
 	}
 
 	if (sbs->manager_present) {
@@ -622,7 +622,7 @@ static void acpi_sbs_callback(void *context)
 			acpi_battery_read(bat);
 			if (saved_battery_state == bat->present)
 				continue;
-			kobject_uevent(&bat->bat->dev.kobj, KOBJ_CHANGE);
+			power_supply_changed(bat->bat);
 		}
 	}
 }

drivers/pnp/base.h

@@ -6,6 +6,7 @@
 
 extern struct mutex pnp_lock;
 extern const struct attribute_group *pnp_dev_groups[];
+extern const struct bus_type pnp_bus_type;
 
 int pnp_register_protocol(struct pnp_protocol *protocol);
 void pnp_unregister_protocol(struct pnp_protocol *protocol);

drivers/pnp/driver.c

@@ -266,6 +266,12 @@ const struct bus_type pnp_bus_type = {
 	.dev_groups = pnp_dev_groups,
 };
 
+bool dev_is_pnp(const struct device *dev)
+{
+	return dev->bus == &pnp_bus_type;
+}
+EXPORT_SYMBOL_GPL(dev_is_pnp);
+
 int pnp_register_driver(struct pnp_driver *drv)
 {
 	drv->driver.name = drv->name;

include/linux/pnp.h

@@ -435,8 +435,6 @@ struct pnp_protocol {
 #define protocol_for_each_dev(protocol, dev)	\
 	list_for_each_entry(dev, &(protocol)->devices, protocol_list)
 
-extern const struct bus_type pnp_bus_type;
-
 #if defined(CONFIG_PNP)
 
 /* device management */
@@ -469,7 +467,7 @@ int compare_pnp_id(struct pnp_id *pos, const char *id);
 int pnp_register_driver(struct pnp_driver *drv);
 void pnp_unregister_driver(struct pnp_driver *drv);
 
-#define dev_is_pnp(d) ((d)->bus == &pnp_bus_type)
+bool dev_is_pnp(const struct device *dev);
 
 #else
 
@@ -502,7 +500,7 @@ static inline int compare_pnp_id(struct pnp_id *pos, const char *id) { return -E
 static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
 static inline void pnp_unregister_driver(struct pnp_driver *drv) { }
 
-#define dev_is_pnp(d) false
+static inline bool dev_is_pnp(const struct device *dev) { return false; }
 
 #endif /* CONFIG_PNP */