regmap: debugfs: Factor out debugfs_tot_len calc into a function

In preparation to support the regmap debugfs ranges functionality
factor this code out to a separate function.  We'll need to ensure
that the value has been correctly calculated from two separate places
in the code.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
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 246f459e91708008f4ca4fe539a72e3cf7944374..78d5f20c5f5b61ec4e60c51a62bd70f8f5592c46 100644 (file)
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -155,6 +155,19 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
        return ret;
 }
 
+static inline void regmap_calc_tot_len(struct regmap *map,
+                                      void *buf, size_t count)
+{
+       /* Calculate the length of a fixed format  */
+       if (!map->debugfs_tot_len) {
+               map->debugfs_reg_len = regmap_calc_reg_len(map->max_register,
+                                                          buf, count);
+               map->debugfs_val_len = 2 * map->format.val_bytes;
+               map->debugfs_tot_len = map->debugfs_reg_len +
+                       map->debugfs_val_len + 3;      /* : \n */
+       }
+}
+
 static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
                                   unsigned int to, char __user *user_buf,
                                   size_t count, loff_t *ppos)
@@ -173,14 +186,7 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
        if (!buf)
                return -ENOMEM;
 
-       /* Calculate the length of a fixed format  */
-       if (!map->debugfs_tot_len) {
-               map->debugfs_reg_len = regmap_calc_reg_len(map->max_register,
-                                                          buf, count);
-               map->debugfs_val_len = 2 * map->format.val_bytes;
-               map->debugfs_tot_len = map->debugfs_reg_len +
-                       map->debugfs_val_len + 3;      /* : \n */
-       }
+       regmap_calc_tot_len(map, buf, count);
 
        /* Work out which register we're starting at */
        start_reg = regmap_debugfs_get_dump_start(map, from, *ppos, &p);