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regmap: Fix registers file debugfs 

Ensure that the mode reported for the registers file in debugfs is
 accurate by marking it as read only when the define to enable writes has
 not been set.  This is on the edge of being a bug fix but it's debugfs
 and it makes it much easier for users to spot what's going wrong when
 they forget to enable writeability.
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Merge tag 'regmap-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap fix from Mark Brown:
 "Fix registers file in debugfs

  Ensure that the mode reported for the registers file in debugfs is
  accurate by marking it as read only when the define to enable writes
  has not been set.  This is on the edge of being a bug fix but it's
  debugfs and it makes it much easier for users to spot what's going
  wrong when they forget to enable writeability"

* tag 'regmap-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Fix debugfs-file 'registers' mode
hifive-unleashed-5.1
Linus Torvalds 2014-09-15 16:20:56 -07:00
parent b92178623f ffff7a12ac
commit 2324067fa9
1 changed files with 8 additions and 1 deletions
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9
drivers/base/regmap/regmap-debugfs.c
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@ -512,7 +512,14 @@ void regmap_debugfs_init(struct regmap *map, const char *name)
map, &regmap_reg_ranges_fops);
if (map->max_register || regmap_readable(map, 0)) {
debugfs_create_file("registers", 0400, map->debugfs,
umode_t registers_mode;
if (IS_ENABLED(REGMAP_ALLOW_WRITE_DEBUGFS))
registers_mode = 0600;
else
registers_mode = 0400;
debugfs_create_file("registers", registers_mode, map->debugfs,
map, &regmap_map_fops);
debugfs_create_file("access", 0400, map->debugfs,
map, &regmap_access_fops);