crypto: atmel-sha204a - Use device-managed registration API

Use devm_hwrng_register to get rid of manual
unregistration.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/atmel-sha204a.c b/drivers/crypto/atmel-sha204a.c
index ea0d206..c96c14e 100644 (file)
--- a/drivers/crypto/atmel-sha204a.c
+++ b/drivers/crypto/atmel-sha204a.c
@@ -109,7 +109,7 @@ static int atmel_sha204a_probe(struct i2c_client *client,
        i2c_priv->hwrng.read = atmel_sha204a_rng_read;
        i2c_priv->hwrng.quality = 1024;
 
-       ret = hwrng_register(&i2c_priv->hwrng);
+       ret = devm_hwrng_register(&client->dev, &i2c_priv->hwrng);
        if (ret)
                dev_warn(&client->dev, "failed to register RNG (%d)\n", ret);
 
@@ -127,7 +127,6 @@ static int atmel_sha204a_remove(struct i2c_client *client)
 
        if (i2c_priv->hwrng.priv)
                kfree((void *)i2c_priv->hwrng.priv);
-       hwrng_unregister(&i2c_priv->hwrng);
 
        return 0;
 }