[PATCH v2] hwrng: optee: Use device-managed registration API

[Tian Tao]

Use devm_hwrng_register to get rid of manual unregistration.

Signed-off-by: Tian Tao <tiant...@hisilicon.com>
Reviewed-by: Sumit Garg <sumit.g...@linaro.org>
---
v2:Fix up subject line as s/hwrng: optee -:/hwrng: optee:/
---
 drivers/char/hw_random/optee-rng.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/char/hw_random/optee-rng.c 
b/drivers/char/hw_random/optee-rng.c
index a99d829..135a825 100644
--- a/drivers/char/hw_random/optee-rng.c
+++ b/drivers/char/hw_random/optee-rng.c
@@ -243,7 +243,7 @@ static int optee_rng_probe(struct device *dev)
        if (err)
                goto out_sess;
 
-       err = hwrng_register(&pvt_data.optee_rng);
+       err = devm_hwrng_register(dev, &pvt_data.optee_rng);
        if (err) {
                dev_err(dev, "hwrng registration failed (%d)\n", err);
                goto out_sess;
@@ -263,7 +263,6 @@ static int optee_rng_probe(struct device *dev)
 
 static int optee_rng_remove(struct device *dev)
 {
-       hwrng_unregister(&pvt_data.optee_rng);
        tee_client_close_session(pvt_data.ctx, pvt_data.session_id);
        tee_client_close_context(pvt_data.ctx);
 
-- 
2.7.4