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    Subject[PATCH] debugfs helper for decimal challenged
    Date
    From: Robin Getz <rgetz@blackfin.uclinux.org>

    Allows debugfs helper functions to have a hex output, rather than just decimal

    Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
    ---

    fs/debugfs/file.c | 36 ++++++++++++++++++++++++++++++++++++
    include/linux/debugfs.h | 27 +++++++++++++++++++++++++++
    2 files changed, 63 insertions(+)

    Index: linux-2.6.x/include/linux/debugfs.h
    ===================================================================
    --- linux-2.6.x/include/linux/debugfs.h (revision 3534)
    +++ linux-2.6.x/include/linux/debugfs.h (working copy)
    @@ -44,6 +44,12 @@
    struct dentry *parent, u16 *value);
    struct dentry *debugfs_create_u32(const char *name, mode_t mode,
    struct dentry *parent, u32 *value);
    +struct dentry *debugfs_create_x8(const char *name, mode_t mode,
    + struct dentry *parent, u8 *value);
    +struct dentry *debugfs_create_x16(const char *name, mode_t mode,
    + struct dentry *parent, u16 *value);
    +struct dentry *debugfs_create_x32(const char *name, mode_t mode,
    + struct dentry *parent, u32 *value);
    struct dentry *debugfs_create_bool(const char *name, mode_t mode,
    struct dentry *parent, u32 *value);

    @@ -104,6 +110,27 @@
    return ERR_PTR(-ENODEV);
    }

    +static inline struct dentry *debugfs_create_x8(const char *name, mode_t mode,
    + struct dentry *parent,
    + u8 *value)
    +{
    + return ERR_PTR(-ENODEV);
    +}
    +
    +static inline struct dentry *debugfs_create_x16(const char *name, mode_t mode,
    + struct dentry *parent,
    + u16 *value)
    +{
    + return ERR_PTR(-ENODEV);
    +}
    +
    +static inline struct dentry *debugfs_create_x32(const char *name, mode_t mode,
    + struct dentry *parent,
    + u32 *value)
    +{
    + return ERR_PTR(-ENODEV);
    +}
    +
    static inline struct dentry *debugfs_create_bool(const char *name, mode_t mode,
    struct dentry *parent,
    u32 *value)
    Index: linux-2.6.x/fs/debugfs/file.c
    ===================================================================
    --- linux-2.6.x/fs/debugfs/file.c (revision 3534)
    +++ linux-2.6.x/fs/debugfs/file.c (working copy)
    @@ -179,6 +179,42 @@
    }
    EXPORT_SYMBOL_GPL(debugfs_create_u32);

    +DEFINE_SIMPLE_ATTRIBUTE(fops_x8, debugfs_u8_get, debugfs_u8_set, "0x%02llx\n");
    +
    +DEFINE_SIMPLE_ATTRIBUTE(fops_x16, debugfs_u16_get, debugfs_u16_set, "0x%04llx\n");
    +
    +DEFINE_SIMPLE_ATTRIBUTE(fops_x32, debugfs_u32_get, debugfs_u32_set, "0x%08llx\n");
    +
    +/**
    + * debugfs_create_x8 - create a debugfs file that is used to read and write an unsigned 8-bit value
    + * debugfs_create_x16 - create a debugfs file that is used to read and write an unsigned 16-bit value
    + * debugfs_create_x32 - create a debugfs file that is used to read and write an unsigned 32-bit value
    + *
    + * These functions are exactly the same as the above functions, (but use a hex
    + * output for the decimal challenged) for details look at the above unsigned
    + * decimal functions.
    + */
    +struct dentry *debugfs_create_x8(const char *name, mode_t mode,
    + struct dentry *parent, u8 *value)
    +{
    + return debugfs_create_file(name, mode, parent, value, &fops_x8);
    +}
    +EXPORT_SYMBOL_GPL(debugfs_create_x8);
    +
    +struct dentry *debugfs_create_x16(const char *name, mode_t mode,
    + struct dentry *parent, u16 *value)
    +{
    + return debugfs_create_file(name, mode, parent, value, &fops_x16);
    +}
    +EXPORT_SYMBOL_GPL(debugfs_create_x16);
    +
    +struct dentry *debugfs_create_x32(const char *name, mode_t mode,
    + struct dentry *parent, u32 *value)
    +{
    + return debugfs_create_file(name, mode, parent, value, &fops_x32);
    +}
    +EXPORT_SYMBOL_GPL(debugfs_create_x32);
    +
    static ssize_t read_file_bool(struct file *file, char __user *user_buf,
    size_t count, loff_t *ppos)
    {
    -
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