power_supply: max17042: Use regmap_update_bits instead read and write
Consolidate regmap_read() and regmap_write() into one regmap_update_bits() call. This is more readable and safer because regmap's mutex will prevent any concurrent access to modified registers (the concurrent access could happen through max17042_init_chip() in scheduled work). Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: NSebastian Reichel <sre@kernel.org>
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