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PM / devfreq: cache the last call to get_dev_status()
The return value of get_dev_status() can be reused. Cache it so that other parts of the kernel can reuse it instead of having to call the same function again. Cc: Kyungmin Park <[email protected]> Signed-off-by: Javi Merino <[email protected]> Signed-off-by: MyungJoo Ham <[email protected]>
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