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
  ...

1 files changed, 4 insertions, 20 deletions

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 0787d33b80d8..db09eb3669c5 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -575,8 +575,6 @@ static void __init zs_stat_init(void)
 	}
 
 	zs_stat_root = debugfs_create_dir("zsmalloc", NULL);
-	if (!zs_stat_root)
-		pr_warn("debugfs 'zsmalloc' stat dir creation failed\n");
 }
 
 static void __exit zs_stat_exit(void)
@@ -647,29 +645,15 @@ DEFINE_SHOW_ATTRIBUTE(zs_stats_size);
 
 static void zs_pool_stat_create(struct zs_pool *pool, const char *name)
 {
-	struct dentry *entry;
-
 	if (!zs_stat_root) {
 		pr_warn("no root stat dir, not creating <%s> stat dir\n", name);
 		return;
 	}
 
-	entry = debugfs_create_dir(name, zs_stat_root);
-	if (!entry) {
-		pr_warn("debugfs dir <%s> creation failed\n", name);
-		return;
-	}
-	pool->stat_dentry = entry;
-
-	entry = debugfs_create_file("classes", S_IFREG | 0444,
-				    pool->stat_dentry, pool,
-				    &zs_stats_size_fops);
-	if (!entry) {
-		pr_warn("%s: debugfs file entry <%s> creation failed\n",
-				name, "classes");
-		debugfs_remove_recursive(pool->stat_dentry);
-		pool->stat_dentry = NULL;
-	}
+	pool->stat_dentry = debugfs_create_dir(name, zs_stat_root);
+
+	debugfs_create_file("classes", S_IFREG | 0444, pool->stat_dentry, pool,
+			    &zs_stats_size_fops);
 }
 
 static void zs_pool_stat_destroy(struct zs_pool *pool)