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| author | Jan Dakinevich <jan.dakinevich@salutedevices.com> | 2024-01-26 23:08:36 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-02-05 17:32:35 +0300 |
| commit | 0ec74ad3c157bd4bcbcc8b294777733687e8cd2a (patch) | |
| tree | 853dee94f5d1bd7cc8a8e41bf50fc08ef5438d4c /drivers/base/regmap/regcache.c | |
| parent | 6613476e225e090cc9aad49be7fa504e290dd33d (diff) | |
| download | linux-0ec74ad3c157bd4bcbcc8b294777733687e8cd2a.tar.xz | |
regmap: rework ->max_register handling
When regmap consists of single register, 'regmap' subsystem is unable to
understand whether ->max_register is set or not, because in both cases it
is equal to zero. It leads to that the logic based on value of
->max_register doesn't work. For example using of REGCACHE_FLAT fails.
This patch introduces an extra parameter to regmap config, indicating
that zero value in ->max_register is authentic.
Signed-off-by: Jan Dakinevich <jan.dakinevich@salutedevices.com>
Link: https://lore.kernel.org/r/20240126200836.1829995-1-jan.dakinevich@salutedevices.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/base/regmap/regcache.c')
| -rw-r--r-- | drivers/base/regmap/regcache.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index ac63a73ccdaa..2e41cb12b8e2 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -187,8 +187,10 @@ int regcache_init(struct regmap *map, const struct regmap_config *config) return 0; } - if (!map->max_register && map->num_reg_defaults_raw) + if (!map->max_register_is_set && map->num_reg_defaults_raw) { map->max_register = (map->num_reg_defaults_raw - 1) * map->reg_stride; + map->max_register_is_set = true; + } if (map->cache_ops->init) { dev_dbg(map->dev, "Initializing %s cache\n", |