ALSA: ppc: Remove i2c client removal hack

The i2c_driver.clients list is internal to I2C core and is going
to be removed. No driver should access it. Unregister the
i2c client explicitly before deleting the i2c driver.

Reviewed-by: Takashi Iwai <[e-mail]>
Signed-off-by: Heiner Kallweit <[e-mail]>
Signed-off-by: Wolfram Sang <[e-mail]>

sound/ppc/keywest.c

···
 		return -ENODEV;
 	}
 	
-	/*
-	 * Let i2c-core delete that device on driver removal.
-	 * This is safe because i2c-core holds the core_lock mutex for us.
-	 */
-	list_add_tail(&keywest_ctx->client->detected,
-		      &to_i2c_driver(keywest_ctx->client->dev.driver)->clients);
 	return 0;
 }
 
···
 void snd_pmac_keywest_cleanup(struct pmac_keywest *i2c)
 {
 	if (keywest_ctx && keywest_ctx == i2c) {
+		i2c_unregister_device(keywest_ctx->client);
 		i2c_del_driver(&keywest_driver);
 		keywest_ctx = NULL;
 	}