Merge tag 'driver-core-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the set of driver core / debugfs patches for 4.15-rc1.

  Not many here, mostly all are debugfs fixes to resolve some
  long-reported problems with files going away with references to them
  in userspace. There's also some SPDX cleanups for the debugfs code, as
  well as a few other minor driver core changes for issues reported by
  people.

  All of these have been in linux-next for a week or more with no
  reported issues"

* tag 'driver-core-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver core: Fix device link deferred probe
  debugfs: Remove redundant license text
  debugfs: add SPDX identifiers to all debugfs files
  debugfs: defer debugfs_fsdata allocation to first usage
  debugfs: call debugfs_real_fops() only after debugfs_file_get()
  debugfs: purge obsolete SRCU based removal protection
  IB/hfi1: convert to debugfs_file_get() and -put()
  debugfs: convert to debugfs_file_get() and -put()
  debugfs: debugfs_real_fops(): drop __must_hold sparse annotation
  debugfs: implement per-file removal protection
  debugfs: add support for more elaborate ->d_fsdata
  driver core: Move device_links_purge() after bus_remove_device()
  arch_topology: Fix section miss match warning due to free_raw_capacity()
  driver-core: pr_err() strings should end with newlines

drivers/base/arch_topology.c

@@ -105,7 +105,7 @@ subsys_initcall(register_cpu_capacity_sysctl);
 static u32 capacity_scale;
 static u32 *raw_capacity;
 
-static int __init free_raw_capacity(void)
+static int free_raw_capacity(void)
 {
 	kfree(raw_capacity);
 	raw_capacity = NULL;

drivers/base/core.c

@@ -1958,7 +1958,6 @@ void device_del(struct device *dev)
 		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
 					     BUS_NOTIFY_DEL_DEVICE, dev);
 
-	device_links_purge(dev);
 	dpm_sysfs_remove(dev);
 	if (parent)
 		klist_del(&dev->p->knode_parent);
@@ -1986,6 +1985,7 @@ void device_del(struct device *dev)
 	device_pm_remove(dev);
 	driver_deferred_probe_del(dev);
 	device_remove_properties(dev);
+	device_links_purge(dev);
 
 	/* Notify the platform of the removal, in case they
 	 * need to do anything...

drivers/base/dd.c

@@ -350,6 +350,15 @@ EXPORT_SYMBOL_GPL(device_bind_driver);
 static atomic_t probe_count = ATOMIC_INIT(0);
 static DECLARE_WAIT_QUEUE_HEAD(probe_waitqueue);
 
+static void driver_deferred_probe_add_trigger(struct device *dev,
+					      int local_trigger_count)
+{
+	driver_deferred_probe_add(dev);
+	/* Did a trigger occur while probing? Need to re-trigger if yes */
+	if (local_trigger_count != atomic_read(&deferred_trigger_count))
+		driver_deferred_probe_trigger();
+}
+
 static int really_probe(struct device *dev, struct device_driver *drv)
 {
 	int ret = -EPROBE_DEFER;
@@ -369,6 +378,8 @@ static int really_probe(struct device *dev, struct device_driver *drv)
 	}
 
 	ret = device_links_check_suppliers(dev);
+	if (ret == -EPROBE_DEFER)
+		driver_deferred_probe_add_trigger(dev, local_trigger_count);
 	if (ret)
 		return ret;
 
@@ -470,10 +481,7 @@ pinctrl_bind_failed:
 	case -EPROBE_DEFER:
 		/* Driver requested deferred probing */
 		dev_dbg(dev, "Driver %s requests probe deferral\n", drv->name);
-		driver_deferred_probe_add(dev);
-		/* Did a trigger occur while probing? Need to re-trigger if yes */
-		if (local_trigger_count != atomic_read(&deferred_trigger_count))
-			driver_deferred_probe_trigger();
+		driver_deferred_probe_add_trigger(dev, local_trigger_count);
 		break;
 	case -ENODEV:
 	case -ENXIO:

drivers/base/test/test_async_driver_probe.c

@@ -64,7 +64,7 @@ static int __init test_async_probe_init(void)
 						      NULL, 0);
 	if (IS_ERR(async_dev_1)) {
 		error = PTR_ERR(async_dev_1);
-		pr_err("failed to create async_dev_1: %d", error);
+		pr_err("failed to create async_dev_1: %d\n", error);
 		return error;
 	}
 
@@ -91,7 +91,7 @@ static int __init test_async_probe_init(void)
 						      NULL, 0);
 	if (IS_ERR(async_dev_2)) {
 		error = PTR_ERR(async_dev_2);
-		pr_err("failed to create async_dev_2: %d", error);
+		pr_err("failed to create async_dev_2: %d\n", error);
 		goto err_unregister_async_driver;
 	}
 
@@ -118,7 +118,7 @@ static int __init test_async_probe_init(void)
 						     NULL, 0);
 	if (IS_ERR(sync_dev_1)) {
 		error = PTR_ERR(sync_dev_1);
-		pr_err("failed to create sync_dev_1: %d", error);
+		pr_err("failed to create sync_dev_1: %d\n", error);
 		goto err_unregister_sync_driver;
 	}