Merge tag 'v5.11' into sched/core, to pick up fixes & refresh the branch

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 21 insertions, 6 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 80b668c80073..22566b4b3150 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -486,6 +486,7 @@ static void acpi_device_del(struct acpi_device *device)
 				acpi_device_bus_id->instance_no--;
 			else {
 				list_del(&acpi_device_bus_id->node);
+				kfree_const(acpi_device_bus_id->bus_id);
 				kfree(acpi_device_bus_id);
 			}
 			break;
@@ -585,6 +586,8 @@ static int acpi_get_device_data(acpi_handle handle, struct acpi_device **device,
 	if (!device)
 		return -EINVAL;
 
+	*device = NULL;
+
 	status = acpi_get_data_full(handle, acpi_scan_drop_device,
 				    (void **)device, callback);
 	if (ACPI_FAILURE(status) || !*device) {
@@ -674,7 +677,14 @@ int acpi_device_add(struct acpi_device *device,
 	}
 	if (!found) {
 		acpi_device_bus_id = new_bus_id;
-		strcpy(acpi_device_bus_id->bus_id, acpi_device_hid(device));
+		acpi_device_bus_id->bus_id =
+			kstrdup_const(acpi_device_hid(device), GFP_KERNEL);
+		if (!acpi_device_bus_id->bus_id) {
+			pr_err(PREFIX "Memory allocation error for bus id\n");
+			result = -ENOMEM;
+			goto err_free_new_bus_id;
+		}
+
 		acpi_device_bus_id->instance_no = 0;
 		list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
 	}
@@ -709,6 +719,11 @@ int acpi_device_add(struct acpi_device *device,
 	if (device->parent)
 		list_del(&device->node);
 	list_del(&device->wakeup_list);
+
+ err_free_new_bus_id:
+	if (!found)
+		kfree(new_bus_id);
+
 	mutex_unlock(&acpi_device_lock);
 
  err_detach:
@@ -2108,12 +2123,12 @@ void acpi_walk_dep_device_list(acpi_handle handle)
 	list_for_each_entry_safe(dep, tmp, &acpi_dep_list, node) {
 		if (dep->supplier == handle) {
 			acpi_bus_get_device(dep->consumer, &adev);
-			if (!adev)
-				continue;
 
-			adev->dep_unmet--;
-			if (!adev->dep_unmet)
-				acpi_bus_attach(adev, true);
+			if (adev) {
+				adev->dep_unmet--;
+				if (!adev->dep_unmet)
+					acpi_bus_attach(adev, true);
+			}
 
 			list_del(&dep->node);
 			kfree(dep);