diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2011-11-16 16:28:19 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-11-16 17:34:53 +0000 |
| commit | 19254411db4e69d90958244c5017e7e4a38547b0 (patch) | |
| tree | fd45ca553cb7aef1c4665b6a28df92818d8ce507 /drivers/base | |
| parent | 720e4616e8fd85284ef1addd8b8d93d8415e8dbc (diff) | |
| download | blackbird-op-linux-19254411db4e69d90958244c5017e7e4a38547b0.tar.gz blackbird-op-linux-19254411db4e69d90958244c5017e7e4a38547b0.zip | |
regmap: Try cached read before checking if a hardware read is possible
For some register format types we do not provide a parse_val so we can not do a
hardware read. But a cached read is still possible, so try to read from the
cache first, before checking whether a hardware read is possible. Otherwise the
cache becomes pretty useless for these register types.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 3cf4785c3afe..b96cf7202860 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -434,15 +434,15 @@ static int _regmap_read(struct regmap *map, unsigned int reg, { int ret; - if (!map->format.parse_val) - return -EINVAL; - if (!map->cache_bypass) { ret = regcache_read(map, reg, val); if (ret == 0) return 0; } + if (!map->format.parse_val) + return -EINVAL; + if (map->cache_only) return -EBUSY; |
