From c9c2c27d7ceca8c2856c5008f2002bddb384f518 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 16 Apr 2019 15:46:55 +0200 Subject: [PATCH] debugfs: make debugfs_create_u32_array() return void The single user of debugfs_create_u32_array() does not care about the return value of it, so make it return void as there is no need to do anything with the return value. Signed-off-by: Greg Kroah-Hartman --- Documentation/filesystems/debugfs.txt | 2 +- fs/debugfs/file.c | 14 ++++---------- include/linux/debugfs.h | 12 +++++------- 3 files changed, 10 insertions(+), 18 deletions(-) diff --git a/Documentation/filesystems/debugfs.txt b/Documentation/filesystems/debugfs.txt index 4a0a9c3f4af6..9e27c843d00e 100644 --- a/Documentation/filesystems/debugfs.txt +++ b/Documentation/filesystems/debugfs.txt @@ -169,7 +169,7 @@ byte offsets over a base for the register block. If you want to dump an u32 array in debugfs, you can create file with: - struct dentry *debugfs_create_u32_array(const char *name, umode_t mode, + void debugfs_create_u32_array(const char *name, umode_t mode, struct dentry *parent, u32 *array, u32 elements); diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index ddd708b09fa1..93e4ca6b2ad7 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -997,25 +997,19 @@ static const struct file_operations u32_array_fops = { * @array as data. If the @mode variable is so set it can be read from. * Writing is not supported. Seek within the file is also not supported. * Once array is created its size can not be changed. - * - * The function returns a pointer to dentry on success. If an error occurs, - * %ERR_PTR(-ERROR) or NULL will be returned. If debugfs is not enabled in - * the kernel, the value %ERR_PTR(-ENODEV) will be returned. */ -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 array_data *data = kmalloc(sizeof(*data), GFP_KERNEL); if (data == NULL) - return NULL; + return; data->array = array; data->elements = elements; - return debugfs_create_file_unsafe(name, mode, parent, data, - &u32_array_fops); + debugfs_create_file_unsafe(name, mode, parent, data, &u32_array_fops); } EXPORT_SYMBOL_GPL(debugfs_create_u32_array); 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,