regmap: Share some of the debugfs infrastructure ready for more files
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index fff8e83..e541d7f 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -20,7 +20,14 @@
static struct dentry *regmap_debugfs_root;
-static int regmap_map_open_file(struct inode *inode, struct file *file)
+/* Calculate the length of a fixed format */
+static size_t regmap_calc_reg_len(int max_val, char *buf, size_t buf_size)
+{
+ snprintf(buf, buf_size, "%x", max_val);
+ return strlen(buf);
+}
+
+static int regmap_open_file(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
@@ -46,8 +53,7 @@
return -ENOMEM;
/* Calculate the length of a fixed format */
- snprintf(buf, count, "%x", map->max_register);
- reg_len = strlen(buf);
+ reg_len = regmap_calc_reg_len(map->max_register, buf, count);
val_len = 2 * map->format.val_bytes;
tot_len = reg_len + val_len + 3; /* : \n */
@@ -98,7 +104,7 @@
}
static const struct file_operations regmap_map_fops = {
- .open = regmap_map_open_file,
+ .open = regmap_open_file,
.read = regmap_map_read_file,
.llseek = default_llseek,
};