On Tue, Sep 27, 2011 at 03:42:45PM +0530, Rajendra Nayak wrote:

+	init_data = devm_kzalloc(dev, sizeof(struct regulator_init_data),
+						 GFP_KERNEL);
+	if (!init_data)
+		return NULL; /* Out of memory? */

This means that the init data will be kept around for the entire
lifetime of the device rather than being discarded.

+	init_data->supply_regulator = (char *)of_get_property(dev->of_node,
+						"regulator-supplies", NULL);

I'd expect that in the device tree world the supply regulator would
reference the node for that regulator.

 	/* voltage output range (inclusive) - for voltage control */
-	int min_uV;
-	int max_uV;
+	u32 min_uV;
+	u32 max_uV;
 
-	int uV_offset;
+	u32 uV_offset;
 
 	/* current output range (inclusive) - for current control */
-	int min_uA;
-	int max_uA;
+	u32 min_uA;
+	u32 max_uA;

Hrm, I think loosing the signs here is bad karma - negative voltages do
exist after all.