diff options
| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2013-02-20 12:15:23 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-03-04 10:33:03 +0800 |
| commit | 065b4c587557dcd3dc8d3ff1ba2b9ecc6e0c6668 (patch) | |
| tree | dfe0d20d12189d4471fd2feafca736ca67a2997a /drivers/base/regmap/internal.h | |
| parent | 480738de0e076d759a973be623fac195cb901b82 (diff) | |
regmap: debugfs: Add a registers `range' file
This file lists the register ranges in the register map. The condition
to split the range is based on whether the block is readable or not.
Ensure that we lock the `debugfs_off_cache' list whenever we access
and modify the list. There is a possible race otherwise between the
read() operations of the `registers' file and the `range' file.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base/regmap/internal.h')
| -rw-r--r-- | drivers/base/regmap/internal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index 5a22bd33ce3d..dc23508745fe 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -76,6 +76,7 @@ struct regmap { unsigned int debugfs_tot_len; struct list_head debugfs_off_cache; + struct mutex cache_lock; #endif unsigned int max_register; |