修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/char/hw_random/nomadik-rng.c
..
..
@@ -1,11 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Nomadik RNG support
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  *  Copyright 2009 Alessandro Rubini
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- *
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- *  This program is free software; you can redistribute it and/or modify
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- *  it under the terms of the GNU General Public License as published by
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- *  the Free Software Foundation; either version 2 of the License, or
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- *  (at your option) any later version.
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  */
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 #include <linux/kernel.h>
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@@ -16,8 +12,6 @@
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 #include <linux/io.h>
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 #include <linux/clk.h>
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 #include <linux/err.h>
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-
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-static struct clk *rng_clk;
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 static int nmk_rng_read(struct hwrng *rng, void *data, size_t max, bool wait)
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 {
..
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@@ -40,48 +34,42 @@
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 static int nmk_rng_probe(struct amba_device *dev, const struct amba_id *id)
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 {
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+	struct clk *rng_clk;
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 	void __iomem *base;
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 	int ret;
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-	rng_clk = devm_clk_get(&dev->dev, NULL);
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+	rng_clk = devm_clk_get_enabled(&dev->dev, NULL);
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 	if (IS_ERR(rng_clk)) {
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 		dev_err(&dev->dev, "could not get rng clock\n");
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 		ret = PTR_ERR(rng_clk);
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 		return ret;
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 	}
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-	clk_prepare_enable(rng_clk);
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-
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 	ret = amba_request_regions(dev, dev->dev.init_name);
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 	if (ret)
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-		goto out_clk;
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+		return ret;
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 	ret = -ENOMEM;
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 	base = devm_ioremap(&dev->dev, dev->res.start,
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 			    resource_size(&dev->res));
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 	if (!base)
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 		goto out_release;
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 	nmk_rng.priv = (unsigned long)base;
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-	ret = hwrng_register(&nmk_rng);
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+	ret = devm_hwrng_register(&dev->dev, &nmk_rng);
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 	if (ret)
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 		goto out_release;
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 	return 0;
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 out_release:
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 	amba_release_regions(dev);
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-out_clk:
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-	clk_disable(rng_clk);
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 	return ret;
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 }
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-static int nmk_rng_remove(struct amba_device *dev)
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+static void nmk_rng_remove(struct amba_device *dev)
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 {
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-	hwrng_unregister(&nmk_rng);
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 	amba_release_regions(dev);
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-	clk_disable(rng_clk);
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-	return 0;
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 }
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-static struct amba_id nmk_rng_ids[] = {
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+static const struct amba_id nmk_rng_ids[] = {
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 	{
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 		.id	= 0x000805e1,
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 		.mask	= 0x000fffff, /* top bits are rev and cfg: accept all */