[PATCH 20/20] mfd: wm8400: Use devm_mfd_add_devices() for mfd_device registration

[Laxman Dewangan]

Use devm_mfd_add_devices() for mfd devices registration and get
rid of .remove callback to remove mfd devices. This is done
by managed device framework.

Signed-off-by: Laxman Dewangan <ldewan...@nvidia.com>
CC: Mark Brown <broo...@kernel.org>
CC: patc...@opensource.wolfsonmicro.com
---
 drivers/mfd/wm8400-core.c | 25 +++----------------------
 1 file changed, 3 insertions(+), 22 deletions(-)

diff --git a/drivers/mfd/wm8400-core.c b/drivers/mfd/wm8400-core.c
index 3bd44a4..9fd8230 100644
--- a/drivers/mfd/wm8400-core.c
+++ b/drivers/mfd/wm8400-core.c
@@ -70,7 +70,7 @@ static int wm8400_register_codec(struct wm8400 *wm8400)
                .pdata_size = sizeof(*wm8400),
        };
 
-       return mfd_add_devices(wm8400->dev, -1, &cell, 1, NULL, 0, NULL);
+       return devm_mfd_add_devices(wm8400->dev, -1, &cell, 1, NULL, 0, NULL);
 }
 
 /*
@@ -111,7 +111,7 @@ static int wm8400_init(struct wm8400 *wm8400,
        ret = wm8400_register_codec(wm8400);
        if (ret != 0) {
                dev_err(wm8400->dev, "Failed to register codec\n");
-               goto err_children;
+               return ret;
        }
 
        if (pdata && pdata->platform_init) {
@@ -119,21 +119,12 @@ static int wm8400_init(struct wm8400 *wm8400,
                if (ret != 0) {
                        dev_err(wm8400->dev, "Platform init failed: %d\n",
                                ret);
-                       goto err_children;
+                       return ret;
                }
        } else
                dev_warn(wm8400->dev, "No platform initialisation supplied\n");
 
        return 0;
-
-err_children:
-       mfd_remove_devices(wm8400->dev);
-       return ret;
-}
-
-static void wm8400_release(struct wm8400 *wm8400)
-{
-       mfd_remove_devices(wm8400->dev);
 }
 
 static const struct regmap_config wm8400_regmap_config = {
@@ -176,15 +167,6 @@ static int wm8400_i2c_probe(struct i2c_client *i2c,
        return wm8400_init(wm8400, dev_get_platdata(&i2c->dev));
 }
 
-static int wm8400_i2c_remove(struct i2c_client *i2c)
-{
-       struct wm8400 *wm8400 = i2c_get_clientdata(i2c);
-
-       wm8400_release(wm8400);
-
-       return 0;
-}
-
 static const struct i2c_device_id wm8400_i2c_id[] = {
        { "wm8400", 0 },
        { }
@@ -196,7 +178,6 @@ static struct i2c_driver wm8400_i2c_driver = {
                .name = "WM8400",
        },
        .probe    = wm8400_i2c_probe,
-       .remove   = wm8400_i2c_remove,
        .id_table = wm8400_i2c_id,
 };
 #endif
-- 
2.1.4