diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/internal.h | 4 | ||||
| -rw-r--r-- | drivers/base/regmap/regmap-debugfs.c | 24 |
2 files changed, 18 insertions, 10 deletions
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index ac869d2..1abcd27 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -50,6 +50,10 @@ struct regmap { #ifdef CONFIG_DEBUG_FS struct dentry *debugfs; const char *debugfs_name; + + unsigned int debugfs_reg_len; + unsigned int debugfs_val_len; + unsigned int debugfs_tot_len; #endif unsigned int max_register; diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index f4b9dd0..00fbd58 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -60,7 +60,6 @@ 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) { - int reg_len, val_len, tot_len; size_t buf_pos = 0; loff_t p = 0; ssize_t ret; @@ -76,9 +75,13 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from, return -ENOMEM; /* Calculate the length of a fixed format */ - 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 */ + 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 */ + } for (i = from; i <= to; i += map->reg_stride) { if (!regmap_readable(map, i)) @@ -90,26 +93,27 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from, /* If we're in the region the user is trying to read */ if (p >= *ppos) { /* ...but not beyond it */ - if (buf_pos >= count - 1 - tot_len) + if (buf_pos >= count - 1 - map->debugfs_tot_len) break; /* Format the register */ snprintf(buf + buf_pos, count - buf_pos, "%.*x: ", - reg_len, i - from); - buf_pos += reg_len + 2; + map->debugfs_reg_len, i - from); + buf_pos += map->debugfs_reg_len + 2; /* Format the value, write all X if we can't read */ ret = regmap_read(map, i, &val); if (ret == 0) snprintf(buf + buf_pos, count - buf_pos, - "%.*x", val_len, val); + "%.*x", map->debugfs_val_len, val); else - memset(buf + buf_pos, 'X', val_len); + memset(buf + buf_pos, 'X', + map->debugfs_val_len); buf_pos += 2 * map->format.val_bytes; buf[buf_pos++] = '\n'; } - p += tot_len; + p += map->debugfs_tot_len; } ret = buf_pos; |
