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regmap: fix regcache_reg_present() for empty cache
In the initial case when no reg_defaults values are provided and no register value was added to the cache yet, the cache_present bitmap is NULL. If this function is invoked for any register it should return false (i.e. the register is not cached) instead of true. Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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@ -223,7 +223,7 @@ int regcache_set_reg_present(struct regmap *map, unsigned int reg);
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static inline bool regcache_reg_present(struct regmap *map, unsigned int reg)
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{
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if (!map->cache_present)
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return true;
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return false;
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if (reg > map->cache_present_nbits)
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return false;
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return map->cache_present[BIT_WORD(reg)] & BIT_MASK(reg);
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