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Commit 1767da9e authored by Ionut Nicu's avatar Ionut Nicu Committed by Mark Brown
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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: default avatarIonut Nicu <ioan.nicu.ext@nsn.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent c095ba72

drivers/base/regmap/internal.h

+1 −1
Original line number Original line Diff line number Diff line
@@ -223,7 +223,7 @@ int regcache_set_reg_present(struct regmap *map, unsigned int reg); 
static inline bool regcache_reg_present(struct regmap *map, unsigned int reg)

static inline bool regcache_reg_present(struct regmap *map, unsigned int reg)

{

{

	if (!map->cache_present)

	if (!map->cache_present)

		return true;

		return false;

	if (reg > map->cache_present_nbits)

	if (reg > map->cache_present_nbits)

		return false;

		return false;

	return map->cache_present[BIT_WORD(reg)] & BIT_MASK(reg);

	return map->cache_present[BIT_WORD(reg)] & BIT_MASK(reg);