if (supply == NULL)
return -EINVAL;
+ list_for_each_entry(node, ®ulator_map_list, list) {
+ if (consumer_dev != node->dev)
+ continue;
+ if (strcmp(node->supply, supply) != 0)
+ continue;
+
+ dev_dbg(consumer_dev, "%s/%s is '%s' supply; fail %s/%s\n",
+ dev_name(&node->regulator->dev),
+ node->regulator->desc->name,
+ supply,
+ dev_name(&rdev->dev), rdev->desc->name);
+ return -EBUSY;
+ }
+
node = kmalloc(sizeof(struct regulator_map), GFP_KERNEL);
if (node == NULL)
return -ENOMEM;
* regulator_enable - enable regulator output
* @regulator: regulator source
*
- * Enable the regulator output at the predefined voltage or current value.
+ * Request that the regulator be enabled with the regulator output at
+ * the predefined voltage or current value. Calls to regulator_enable()
+ * must be balanced with calls to regulator_disable().
+ *
* NOTE: the output value can be set by other drivers, boot loader or may be
- * hardwired in the regulator. Calls to regulator_enable() must be balanced
- * with calls to regulator_disable().
+ * hardwired in the regulator.
*/
int regulator_enable(struct regulator *regulator)
{
* regulator_disable - disable regulator output
* @regulator: regulator source
*
- * Disable the regulator output voltage or current.
+ * Disable the regulator output voltage or current. Calls to
+ * regulator_enable() must be balanced with calls to
+ * regulator_disable().
*
* NOTE: this will only disable the regulator output if no other consumer
- * devices have it enabled. Calls to regulator_enable() must be balanced with
- * calls to regulator_disable().
+ * devices have it enabled, the regulator device supports disabling and
+ * machine constraints permit this operation.
*/
int regulator_disable(struct regulator *regulator)
{
EXPORT_SYMBOL_GPL(regulator_unregister);
/**
- * regulator_suspend_prepare: prepare regulators for system wide suspend
+ * regulator_suspend_prepare - prepare regulators for system wide suspend
* @state: system suspend state
*
* Configure each regulator with it's suspend operating parameters for state.