From 9927c6fa3e1d941c9b89f807f5d0480390eb0471 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 16 Oct 2019 06:03:32 -0700 Subject: debugfs: remove return value of debugfs_create_atomic_t() No one checks the return value of debugfs_create_atomic_t(), 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/20191016130332.GA28240@kroah.com Signed-off-by: Greg Kroah-Hartman --- Documentation/filesystems/debugfs.txt | 4 ++-- fs/debugfs/file.c | 9 ++++----- include/linux/debugfs.h | 13 ++++++------- 3 files changed, 12 insertions(+), 14 deletions(-) diff --git a/Documentation/filesystems/debugfs.txt b/Documentation/filesystems/debugfs.txt index 1ec4a94b6e93..ac6067a02f74 100644 --- a/Documentation/filesystems/debugfs.txt +++ b/Documentation/filesystems/debugfs.txt @@ -113,8 +113,8 @@ lower-case values, or 1 or 0. Any other input will be silently ignored. Also, atomic_t values can be placed in debugfs with: - struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode, - struct dentry *parent, atomic_t *value) + void debugfs_create_atomic_t(const char *name, umode_t mode, + struct dentry *parent, atomic_t *value) A read of this file will get atomic_t values, and a write of this file will set atomic_t values. diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index 8aac1a9007c9..dede25247b81 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -757,12 +757,11 @@ DEFINE_DEBUGFS_ATTRIBUTE(fops_atomic_t_wo, NULL, debugfs_atomic_t_set, * @value: a pointer to the variable that the file should read to and write * from. */ -struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode, - struct dentry *parent, atomic_t *value) +void debugfs_create_atomic_t(const char *name, umode_t mode, + struct dentry *parent, atomic_t *value) { - return debugfs_create_mode_unsafe(name, mode, parent, value, - &fops_atomic_t, &fops_atomic_t_ro, - &fops_atomic_t_wo); + debugfs_create_mode_unsafe(name, mode, parent, value, &fops_atomic_t, + &fops_atomic_t_ro, &fops_atomic_t_wo); } EXPORT_SYMBOL_GPL(debugfs_create_atomic_t); diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h index c127c159d10a..19231e618c16 100644 --- a/include/linux/debugfs.h +++ b/include/linux/debugfs.h @@ -117,8 +117,8 @@ 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, - struct dentry *parent, atomic_t *value); +void debugfs_create_atomic_t(const char *name, umode_t mode, + struct dentry *parent, atomic_t *value); struct dentry *debugfs_create_bool(const char *name, umode_t mode, struct dentry *parent, bool *value); @@ -284,11 +284,10 @@ static inline void debugfs_create_size_t(const char *name, umode_t mode, struct dentry *parent, size_t *value) { } -static inline struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode, - struct dentry *parent, atomic_t *value) -{ - return ERR_PTR(-ENODEV); -} +static inline void debugfs_create_atomic_t(const char *name, umode_t mode, + struct dentry *parent, + atomic_t *value) +{ } static inline struct dentry *debugfs_create_bool(const char *name, umode_t mode, struct dentry *parent, -- cgit v1.2.3