[PATCH] hwrng: cctrng - 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>
---
 drivers/char/hw_random/cctrng.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/char/hw_random/cctrng.c b/drivers/char/hw_random/cctrng.c
index 7a293f2..0efb37a 100644
--- a/drivers/char/hw_random/cctrng.c
+++ b/drivers/char/hw_random/cctrng.c
@@ -585,7 +585,7 @@ static int cctrng_probe(struct platform_device *pdev)
        atomic_set(&drvdata->pending_hw, 1);
 
        /* registration of the hwrng device */
-       rc = hwrng_register(&drvdata->rng);
+       rc = devm_hwrng_register(dev, &drvdata->rng);
        if (rc) {
                dev_err(dev, "Could not register hwrng device.\n");
                goto post_pm_err;
@@ -618,8 +618,6 @@ static int cctrng_remove(struct platform_device *pdev)
 
        dev_dbg(dev, "Releasing cctrng resources...\n");
 
-       hwrng_unregister(&drvdata->rng);
-
        cc_trng_pm_fini(drvdata);
 
        cc_trng_clk_fini(drvdata);
-- 
2.7.4