debugfs: remove return value of debugfs_create_x64()

No one checks the return value of debugfs_create_x64(), as it's not
needed, so make the return value void, so that no one tries to do so in
the future.

Link: https://lore.kernel.org/r/20191011132931.1186197-8-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/filesystems/debugfs.txt b/Documentation/filesystems/debugfs.txt
index 94b8f9a0cb5e5bda9ec3549badde830061baab2f..9e705026ac103b6f143aaa772a8294c8b7396fd3 100644 (file)
--- a/Documentation/filesystems/debugfs.txt
+++ b/Documentation/filesystems/debugfs.txt
@@ -88,8 +88,8 @@ the following functions can be used instead:
                            struct dentry *parent, u16 *value);
     void debugfs_create_x32(const char *name, umode_t mode,
                            struct dentry *parent, u32 *value);
-    struct dentry *debugfs_create_x64(const char *name, umode_t mode,
-                                     struct dentry *parent, u64 *value);
+    void debugfs_create_x64(const char *name, umode_t mode,
+                           struct dentry *parent, u64 *value);
 
 These functions are useful as long as the developer knows the size of the
 value to be exported.  Some types can have different widths on different

diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 9c906251b3c6bedfcabe1ad593b3d3e440af6a8b..3ff736f22eb63e9aa5dabcd5e80ad91fe2fb4682 100644 (file)
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -687,10 +687,10 @@ EXPORT_SYMBOL_GPL(debugfs_create_x32);
  * @value: a pointer to the variable that the file should read to and write
  *         from.
  */
-struct dentry *debugfs_create_x64(const char *name, umode_t mode,
-                                struct dentry *parent, u64 *value)
+void debugfs_create_x64(const char *name, umode_t mode, struct dentry *parent,
+                       u64 *value)
 {
-       return debugfs_create_mode_unsafe(name, mode, parent, value, &fops_x64,
+       debugfs_create_mode_unsafe(name, mode, parent, value, &fops_x64,
                                   &fops_x64_ro, &fops_x64_wo);
 }
 EXPORT_SYMBOL_GPL(debugfs_create_x64);

diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 89d0b02f82f52009ecc8f48991e6625e408a1e90..33690949b45d69048a4297316040947293feef5f 100644 (file)
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -113,8 +113,8 @@ void debugfs_create_x16(const char *name, umode_t mode, struct dentry *parent,
                        u16 *value);
 void debugfs_create_x32(const char *name, umode_t mode, struct dentry *parent,
                        u32 *value);
-struct dentry *debugfs_create_x64(const char *name, umode_t mode,
-                                 struct dentry *parent, u64 *value);
+void debugfs_create_x64(const char *name, umode_t mode, struct dentry *parent,
+                       u64 *value);
 void debugfs_create_size_t(const char *name, umode_t mode,
                           struct dentry *parent, size_t *value);
 struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
@@ -281,12 +281,8 @@ static inline void debugfs_create_x16(const char *name, umode_t mode,
 static inline void debugfs_create_x32(const char *name, umode_t mode,
                                      struct dentry *parent, u32 *value) { }
 
-static inline struct dentry *debugfs_create_x64(const char *name, umode_t mode,
-                                               struct dentry *parent,
-                                               u64 *value)
-{
-       return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_x64(const char *name, umode_t mode,
+                                     struct dentry *parent, u64 *value) { }
 
 static inline void debugfs_create_size_t(const char *name, umode_t mode,
                                         struct dentry *parent, size_t *value)