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
  ...

6 files changed, 15 insertions, 20 deletions

diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 07e02d6df5ad..6a1a8a314d85 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -203,7 +203,6 @@ struct backing_dev_info {
 
 #ifdef CONFIG_DEBUG_FS
         struct dentry *debug_dir;
-        struct dentry *debug_stats;
 #endif
 };
 
diff --git a/include/linux/ceph/debugfs.h b/include/linux/ceph/debugfs.h
index fa5f9b7f5dbb..cf5e840eec71 100644
--- a/include/linux/ceph/debugfs.h
+++ b/include/linux/ceph/debugfs.h
@@ -19,9 +19,9 @@ static const struct file_operations name##_fops = {			\
 };
 
 /* debugfs.c */
-extern int ceph_debugfs_init(void);
+extern void ceph_debugfs_init(void);
 extern void ceph_debugfs_cleanup(void);
-extern int ceph_debugfs_client_init(struct ceph_client *client);
+extern void ceph_debugfs_client_init(struct ceph_client *client);
 extern void ceph_debugfs_client_cleanup(struct ceph_client *client);
 
 #endif
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index 87c211adf49e..068793a619ca 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -176,6 +176,7 @@ enum cpuhp_state {
         CPUHP_AP_WATCHDOG_ONLINE,
         CPUHP_AP_WORKQUEUE_ONLINE,
         CPUHP_AP_RCUTREE_ONLINE,
+        CPUHP_AP_BASE_CACHEINFO_ONLINE,
         CPUHP_AP_ONLINE_DYN,
         CPUHP_AP_ONLINE_DYN_END         = CPUHP_AP_ONLINE_DYN + 30,
         CPUHP_AP_X86_HPET_ONLINE,
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 3b0ba54cc4d5..58424eb3b329 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -133,9 +133,8 @@ struct dentry *debugfs_create_regset32(const char *name, umode_t mode,
 void debugfs_print_regs32(struct seq_file *s, const struct debugfs_reg32 *regs,
                           int nregs, void __iomem *base, char *prefix);
 
-struct dentry *debugfs_create_u32_array(const char *name, umode_t mode,
-                                        struct dentry *parent,
-                                        u32 *array, u32 elements);
+void debugfs_create_u32_array(const char *name, umode_t mode,
+                              struct dentry *parent, u32 *array, u32 elements);
 
 struct dentry *debugfs_create_devm_seqfile(struct device *dev, const char *name,
                                            struct dentry *parent,
@@ -353,11 +352,10 @@ static inline bool debugfs_initialized(void)
         return false;
 }
 
-static inline struct dentry *debugfs_create_u32_array(const char *name, umode_t mode,
-                                        struct dentry *parent,
-                                        u32 *array, u32 elements)
+static inline void debugfs_create_u32_array(const char *name, umode_t mode,
+                                            struct dentry *parent, u32 *array,
+                                            u32 elements)
 {
-        return ERR_PTR(-ENODEV);
 }
 
 static inline struct dentry *debugfs_create_devm_seqfile(struct device *dev,
diff --git a/include/linux/device.h b/include/linux/device.h
index adfcabcba8a1..5eabfa0c4dee 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -164,11 +164,13 @@ void subsys_dev_iter_init(struct subsys_dev_iter *iter,
 struct device *subsys_dev_iter_next(struct subsys_dev_iter *iter);
 void subsys_dev_iter_exit(struct subsys_dev_iter *iter);
 
+int device_match_of_node(struct device *dev, const void *np);
+
 int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data,
                      int (*fn)(struct device *dev, void *data));
 struct device *bus_find_device(struct bus_type *bus, struct device *start,
-                               void *data,
-                               int (*match)(struct device *dev, void *data));
+                               const void *data,
+                               int (*match)(struct device *dev, const void *data));
 struct device *bus_find_device_by_name(struct bus_type *bus,
                                        struct device *start,
                                        const char *name);
@@ -337,11 +339,12 @@ extern int __must_check driver_for_each_device(struct device_driver *drv,
                                                int (*fn)(struct device *dev,
                                                          void *));
 struct device *driver_find_device(struct device_driver *drv,
-                                  struct device *start, void *data,
-                                  int (*match)(struct device *dev, void *data));
+                                  struct device *start, const void *data,
+                                  int (*match)(struct device *dev, const void *data));
 
 void driver_deferred_probe_add(struct device *dev);
 int driver_deferred_probe_check_state(struct device *dev);
+int driver_deferred_probe_check_state_continue(struct device *dev);
 
 /**
  * struct subsys_interface - interfaces to device functions
diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h
index f0273c9e972b..8cfda0554381 100644
--- a/include/linux/mfd/syscon.h
+++ b/include/linux/mfd/syscon.h
@@ -19,7 +19,6 @@ struct device_node;
 #ifdef CONFIG_MFD_SYSCON
 extern struct regmap *syscon_node_to_regmap(struct device_node *np);
 extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
-extern struct regmap *syscon_regmap_lookup_by_pdevname(const char *s);
 extern struct regmap *syscon_regmap_lookup_by_phandle(
                                         struct device_node *np,
                                         const char *property);
@@ -34,11 +33,6 @@ static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
         return ERR_PTR(-ENOTSUPP);
 }
 
-static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s)
-{
-        return ERR_PTR(-ENOTSUPP);
-}
-
 static inline struct regmap *syscon_regmap_lookup_by_phandle(
                                         struct device_node *np,
                                         const char *property)