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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/char/hw_random/n2-drv.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /* n2-drv.c: Niagara-2 RNG driver.
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  *
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  * Copyright (C) 2008, 2011 David S. Miller <davem@davemloft.net>
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@@ -767,7 +768,7 @@
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 	np->hwrng.data_read = n2rng_data_read;
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 	np->hwrng.priv = (unsigned long) np;
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-	err = hwrng_register(&np->hwrng);
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+	err = devm_hwrng_register(&op->dev, &np->hwrng);
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 	if (err)
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 		goto out_hvapi_unregister;
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@@ -791,8 +792,6 @@
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 	np->flags |= N2RNG_FLAG_SHUTDOWN;
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 	cancel_delayed_work_sync(&np->work);
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-
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-	hwrng_unregister(&np->hwrng);
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 	sun4v_hvapi_unregister(HV_GRP_RNG);
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