Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core and debugfs updates from Greg KH:
 "Here is the "big" driver core and debugfs changes for 5.3-rc1

  It's a lot of different patches, all across the tree due to some api
  changes and lots of debugfs cleanups.

  Other than the debugfs cleanups, in this set of changes we have:

   - bus iteration function cleanups

   - scripts/get_abi.pl tool to display and parse Documentation/ABI
     entries in a simple way

   - cleanups to Documenatation/ABI/ entries to make them parse easier
     due to typos and other minor things

   - default_attrs use for some ktype users

   - driver model documentation file conversions to .rst

   - compressed firmware file loading

   - deferred probe fixes

  All of these have been in linux-next for a while, with a bunch of
  merge issues that Stephen has been patient with me for"

* tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits)
  debugfs: make error message a bit more verbose
  orangefs: fix build warning from debugfs cleanup patch
  ubifs: fix build warning after debugfs cleanup patch
  driver: core: Allow subsystems to continue deferring probe
  drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT
  arch_topology: Remove error messages on out-of-memory conditions
  lib: notifier-error-inject: no need to check return value of debugfs_create functions
  swiotlb: no need to check return value of debugfs_create functions
  ceph: no need to check return value of debugfs_create functions
  sunrpc: no need to check return value of debugfs_create functions
  ubifs: no need to check return value of debugfs_create functions
  orangefs: no need to check return value of debugfs_create functions
  nfsd: no need to check return value of debugfs_create functions
  lib: 842: no need to check return value of debugfs_create functions
  debugfs: provide pr_fmt() macro
  debugfs: log errors when something goes wrong
  drivers: s390/cio: Fix compilation warning about const qualifiers
  drivers: Add generic helper to match by of_node
  driver_find_device: Unify the match function with class_find_device()
  bus_find_device: Unify the match callback with class_find_device
  ...

2 files changed, 5 insertions, 33 deletions

diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 1c811c74bfc0..4eeea4d5c3ef 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -776,9 +776,7 @@ static int __init init_ceph_lib(void)
 {
 	int ret = 0;
 
-	ret = ceph_debugfs_init();
-	if (ret < 0)
-		goto out;
+	ceph_debugfs_init();
 
 	ret = ceph_crypto_init();
 	if (ret < 0)
@@ -803,7 +801,6 @@ out_crypto:
 	ceph_crypto_shutdown();
 out_debugfs:
 	ceph_debugfs_cleanup();
-out:
 	return ret;
 }
 
diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c
index 63aef9915f75..7cb992e55475 100644
--- a/net/ceph/debugfs.c
+++ b/net/ceph/debugfs.c
@@ -389,12 +389,9 @@ CEPH_DEFINE_SHOW_FUNC(monc_show)
 CEPH_DEFINE_SHOW_FUNC(osdc_show)
 CEPH_DEFINE_SHOW_FUNC(client_options_show)
 
-int __init ceph_debugfs_init(void)
+void __init ceph_debugfs_init(void)
 {
 	ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
-	if (!ceph_debugfs_dir)
-		return -ENOMEM;
-	return 0;
 }
 
 void ceph_debugfs_cleanup(void)
@@ -402,9 +399,8 @@ void ceph_debugfs_cleanup(void)
 	debugfs_remove(ceph_debugfs_dir);
 }
 
-int ceph_debugfs_client_init(struct ceph_client *client)
+void ceph_debugfs_client_init(struct ceph_client *client)
 {
-	int ret = -ENOMEM;
 	char name[80];
 
 	snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
@@ -412,56 +408,37 @@ int ceph_debugfs_client_init(struct ceph_client *client)
 
 	dout("ceph_debugfs_client_init %p %s\n", client, name);
 
-	BUG_ON(client->debugfs_dir);
 	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
-	if (!client->debugfs_dir)
-		goto out;
 
 	client->monc.debugfs_file = debugfs_create_file("monc",
 						      0400,
 						      client->debugfs_dir,
 						      client,
 						      &monc_show_fops);
-	if (!client->monc.debugfs_file)
-		goto out;
 
 	client->osdc.debugfs_file = debugfs_create_file("osdc",
 						      0400,
 						      client->debugfs_dir,
 						      client,
 						      &osdc_show_fops);
-	if (!client->osdc.debugfs_file)
-		goto out;
 
 	client->debugfs_monmap = debugfs_create_file("monmap",
 					0400,
 					client->debugfs_dir,
 					client,
 					&monmap_show_fops);
-	if (!client->debugfs_monmap)
-		goto out;
 
 	client->debugfs_osdmap = debugfs_create_file("osdmap",
 					0400,
 					client->debugfs_dir,
 					client,
 					&osdmap_show_fops);
-	if (!client->debugfs_osdmap)
-		goto out;
 
 	client->debugfs_options = debugfs_create_file("client_options",
 					0400,
 					client->debugfs_dir,
 					client,
 					&client_options_show_fops);
-	if (!client->debugfs_options)
-		goto out;
-
-	return 0;
-
-out:
-	ceph_debugfs_client_cleanup(client);
-	return ret;
 }
 
 void ceph_debugfs_client_cleanup(struct ceph_client *client)
@@ -477,18 +454,16 @@ void ceph_debugfs_client_cleanup(struct ceph_client *client)
 
 #else  /* CONFIG_DEBUG_FS */
 
-int __init ceph_debugfs_init(void)
+void __init ceph_debugfs_init(void)
 {
-	return 0;
 }
 
 void ceph_debugfs_cleanup(void)
 {
 }
 
-int ceph_debugfs_client_init(struct ceph_client *client)
+void ceph_debugfs_client_init(struct ceph_client *client)
 {
-	return 0;
 }
 
 void ceph_debugfs_client_cleanup(struct ceph_client *client)