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Lu Guanqun authored
When the corresponding output device is not in playback, we can hear a little noises. Fix it by powering on the device only when it's in playback. Signed-off-by: Lu Guanqun <guanqun.lu@intel.com> Reviewed-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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