Re: [alsa-devel] [RFC PATCH 1/1] ALSA: hda - add a timer to find and suspend idle codecs

On 08/14/2012 07:56 PM, mengdong.lin@intel.com wrote:

From: Mengdong Lin mengdong.lin@intel.com

This patch sets up a timer to monitor changes of the parameter 'power_save' and suspend any idle codecs if power save is re-enabled by the user.

Adding timers means are you adding wakeups to the CPU. That seems counterproductive if you're trying to save power...?

Is there no way to listen to a change event of some sort instead?