hwmon: (pcf8591) Don't attempt to detect devices

The PCF8591 can't be detected, don't even try. There are plenty of
other means to instantiate i2c devices these days.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Reviewed-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>

drivers/hwmon/pcf8591.c

@@ -26,10 +26,6 @@
 #include <linux/err.h>
 #include <linux/hwmon.h>
 
-/* Addresses to scan */
-static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c,
-					0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
-
 /* Insmod parameters */
 
 static int input_mode;
@@ -170,24 +166,6 @@ static const struct attribute_group pcf8591_attr_group_opt = {
  * Real code
  */
 
-/* Return 0 if detection is successful, -ENODEV otherwise */
-static int pcf8591_detect(struct i2c_client *client,
-			  struct i2c_board_info *info)
-{
-	struct i2c_adapter *adapter = client->adapter;
-
-	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE
-				     | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
-		return -ENODEV;
-
-	/* Now, we would do the remaining detection. But the PCF8591 is plainly
-	   impossible to detect! Stupid chip. */
-
-	strlcpy(info->type, "pcf8591", I2C_NAME_SIZE);
-
-	return 0;
-}
-
 static int pcf8591_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
@@ -307,10 +285,6 @@ static struct i2c_driver pcf8591_driver = {
 	.probe		= pcf8591_probe,
 	.remove		= pcf8591_remove,
 	.id_table	= pcf8591_id,
-
-	.class		= I2C_CLASS_HWMON,	/* Nearest choice */
-	.detect		= pcf8591_detect,
-	.address_list	= normal_i2c,
 };
 
 static int __init pcf8591_init(void)