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, 26 insertions, 47 deletions

diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index 3cb21b2bf088..8186ca84910b 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -166,10 +166,10 @@ static int debugfs_ul_get(void *data, u64 *val)
 
 DEFINE_SIMPLE_ATTRIBUTE(fops_ul, debugfs_ul_get, debugfs_ul_set, "%llu\n");
 
-static struct dentry *debugfs_create_ul(const char *name, umode_t mode,
-                                struct dentry *parent, unsigned long *value)
+static void debugfs_create_ul(const char *name, umode_t mode,
+                              struct dentry *parent, unsigned long *value)
 {
-        return debugfs_create_file(name, mode, parent, value, &fops_ul);
+        debugfs_create_file(name, mode, parent, value, &fops_ul);
 }
 
 #ifdef CONFIG_FAULT_INJECTION_STACKTRACE_FILTER
@@ -185,12 +185,11 @@ static int debugfs_stacktrace_depth_set(void *data, u64 val)
 DEFINE_SIMPLE_ATTRIBUTE(fops_stacktrace_depth, debugfs_ul_get,
                         debugfs_stacktrace_depth_set, "%llu\n");
 
-static struct dentry *debugfs_create_stacktrace_depth(
-        const char *name, umode_t mode,
-        struct dentry *parent, unsigned long *value)
+static void debugfs_create_stacktrace_depth(const char *name, umode_t mode,
+                                            struct dentry *parent,
+                                            unsigned long *value)
 {
-        return debugfs_create_file(name, mode, parent, value,
-                                   &fops_stacktrace_depth);
+        debugfs_create_file(name, mode, parent, value, &fops_stacktrace_depth);
 }
 
 #endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
@@ -202,51 +201,31 @@ struct dentry *fault_create_debugfs_attr(const char *name,
         struct dentry *dir;
 
         dir = debugfs_create_dir(name, parent);
-        if (!dir)
-                return ERR_PTR(-ENOMEM);
-
-        if (!debugfs_create_ul("probability", mode, dir, &attr->probability))
-                goto fail;
-        if (!debugfs_create_ul("interval", mode, dir, &attr->interval))
-                goto fail;
-        if (!debugfs_create_atomic_t("times", mode, dir, &attr->times))
-                goto fail;
-        if (!debugfs_create_atomic_t("space", mode, dir, &attr->space))
-                goto fail;
-        if (!debugfs_create_ul("verbose", mode, dir, &attr->verbose))
-                goto fail;
-        if (!debugfs_create_u32("verbose_ratelimit_interval_ms", mode, dir,
-                                &attr->ratelimit_state.interval))
-                goto fail;
-        if (!debugfs_create_u32("verbose_ratelimit_burst", mode, dir,
-                                &attr->ratelimit_state.burst))
-                goto fail;
-        if (!debugfs_create_bool("task-filter", mode, dir, &attr->task_filter))
-                goto fail;
+        if (IS_ERR(dir))
+                return dir;
+
+        debugfs_create_ul("probability", mode, dir, &attr->probability);
+        debugfs_create_ul("interval", mode, dir, &attr->interval);
+        debugfs_create_atomic_t("times", mode, dir, &attr->times);
+        debugfs_create_atomic_t("space", mode, dir, &attr->space);
+        debugfs_create_ul("verbose", mode, dir, &attr->verbose);
+        debugfs_create_u32("verbose_ratelimit_interval_ms", mode, dir,
+                           &attr->ratelimit_state.interval);
+        debugfs_create_u32("verbose_ratelimit_burst", mode, dir,
+                           &attr->ratelimit_state.burst);
+        debugfs_create_bool("task-filter", mode, dir, &attr->task_filter);
 
 #ifdef CONFIG_FAULT_INJECTION_STACKTRACE_FILTER
-
-        if (!debugfs_create_stacktrace_depth("stacktrace-depth", mode, dir,
-                                &attr->stacktrace_depth))
-                goto fail;
-        if (!debugfs_create_ul("require-start", mode, dir,
-                                &attr->require_start))
-                goto fail;
-        if (!debugfs_create_ul("require-end", mode, dir, &attr->require_end))
-                goto fail;
-        if (!debugfs_create_ul("reject-start", mode, dir, &attr->reject_start))
-                goto fail;
-        if (!debugfs_create_ul("reject-end", mode, dir, &attr->reject_end))
-                goto fail;
-
+        debugfs_create_stacktrace_depth("stacktrace-depth", mode, dir,
+                                        &attr->stacktrace_depth);
+        debugfs_create_ul("require-start", mode, dir, &attr->require_start);
+        debugfs_create_ul("require-end", mode, dir, &attr->require_end);
+        debugfs_create_ul("reject-start", mode, dir, &attr->reject_start);
+        debugfs_create_ul("reject-end", mode, dir, &attr->reject_end);
 #endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
 
         attr->dname = dget(dir);
         return dir;
-fail:
-        debugfs_remove_recursive(dir);
-
-        return ERR_PTR(-ENOMEM);
 }
 EXPORT_SYMBOL_GPL(fault_create_debugfs_attr);