Thread (2 messages) flat view 2 messages, 2 authors, 2021-02-03

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

From: Sumit Garg <hidden>
Date: 2021-02-03 12:18:52
Also in: op-tee

On Wed, 3 Feb 2021 at 14:55, Tian Tao [off-list ref] wrote:
Use devm_hwrng_register to get rid of manual unregistration.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
---
 drivers/char/hw_random/optee-rng.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
Fix up subject line as s/hwrng: optee -:/hwrng: optee:/

With that fixed you can add:

Reviewed-by: Sumit Garg <redacted>

-Sumit
quoted hunk ↗ jump to hunk
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
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