修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/char/hw_random/nomadik-rng.c
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@@ -13,8 +13,6 @@
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 #include <linux/clk.h>
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 #include <linux/err.h>
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-static struct clk *rng_clk;
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-
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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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 	void __iomem *base = (void __iomem *)rng->priv;
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@@ -36,21 +34,20 @@
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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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@@ -64,15 +61,12 @@
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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_unprepare(rng_clk);
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 	return ret;
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 }
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 static void nmk_rng_remove(struct amba_device *dev)
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 {
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 	amba_release_regions(dev);
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-	clk_disable_unprepare(rng_clk);
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 }
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 static const struct amba_id nmk_rng_ids[] = {