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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-11-18 17:03:50 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-11-20 21:56:38 +0100
commitd91e8db2c3bbe8ef0e2f3e1a6ff5b31a8d53ef16 (patch)
tree2bcc299fa62738407b5e25483230f7249f0d016d /kernel
parentregmap: Remove indexed cache type (diff)
downloadlinux-d91e8db2c3bbe8ef0e2f3e1a6ff5b31a8d53ef16.tar.xz
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regmap: Suppress noop writes in regmap_update_bits()
If the new register value is identical to the original one then suppress the write to the hardware in regmap_update_bits(), saving some I/O cost. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'kernel')
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