Re: [alsa-devel] [PATCH 4/4] ASoC: OMAP: ams-delta: drop .set_bias_level callback

On Sat, Dec 24, 2011 at 12:12:24AM +0100, Janusz Krzysztofik wrote:

+struct regulator_consumer_data {

• struct mutex lock;
• struct regulator *regulator;
• bool enabled;

+};

+static int regulator_toggle(struct regulator_consumer_data *consumer,

• bool enable)
  

+{

• int err = 0;
• if (!consumer->regulator)

• return -ENODEV;
  

• mutex_lock(&consumer->lock);
• if (IS_ERR(consumer->regulator)) {

• err = PTR_ERR(consumer->regulator);
  

• } else if (enable) {

• if (!consumer->enabled) {
  

• 	err = regulator_enable(consumer->regulator);
  

• 	consumer->enabled = true;
  

• }
  

• } else {

• if (consumer->enabled) {
  

• 	err = regulator_disable(consumer->regulator);
  

• 	consumer->enabled = false;
  

• }
  

• }
• mutex_unlock(&consumer->lock);
• return err;

+}

Why's this code not been dropped and what is it for?