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[PATCH 0/0] regmap: drop cache if the bus transfer error

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regmap_write
    ->_regmap_raw_write
    -->regcache_write first and than use map->bus->write to wirte i2c or spi
    But if the i2c or spi transfer failed, But the cache is updated, So if I use
    regmap_read will get the cache data which is not the real register value.

I think the regmap should handle that gracefully,
and may be my modify is not the best way.
But as I described is how to slove that problem.

Elaine Zhang (1):
  regmap: drop cache if the bus transfer error

 drivers/base/regmap/regmap.c | 2 ++
 1 file changed, 2 insertions(+)

-- 
1.9.1

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[PATCH 0/0] regmap: drop cache if the bus transfer error Elaine Zhang <zhangqing@rock-chips.com> - 2016-08-18 09:00 +0200

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