From a5969cabbb4660eab42b6ef0412cbbd1200cf14d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 12 Oct 2024 07:10:09 +0000
Subject: [PATCH] 修改led为gpio
---
kernel/drivers/char/hw_random/nomadik-rng.c | 26 +++++++-------------------
1 files changed, 7 insertions(+), 19 deletions(-)
diff --git a/kernel/drivers/char/hw_random/nomadik-rng.c b/kernel/drivers/char/hw_random/nomadik-rng.c
index 9c85815..3774adf 100644
--- a/kernel/drivers/char/hw_random/nomadik-rng.c
+++ b/kernel/drivers/char/hw_random/nomadik-rng.c
@@ -1,11 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Nomadik RNG support
* Copyright 2009 Alessandro Rubini
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
*/
#include <linux/kernel.h>
@@ -16,8 +12,6 @@
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/err.h>
-
-static struct clk *rng_clk;
static int nmk_rng_read(struct hwrng *rng, void *data, size_t max, bool wait)
{
@@ -40,48 +34,42 @@
static int nmk_rng_probe(struct amba_device *dev, const struct amba_id *id)
{
+ struct clk *rng_clk;
void __iomem *base;
int ret;
- rng_clk = devm_clk_get(&dev->dev, NULL);
+ rng_clk = devm_clk_get_enabled(&dev->dev, NULL);
if (IS_ERR(rng_clk)) {
dev_err(&dev->dev, "could not get rng clock\n");
ret = PTR_ERR(rng_clk);
return ret;
}
- clk_prepare_enable(rng_clk);
-
ret = amba_request_regions(dev, dev->dev.init_name);
if (ret)
- goto out_clk;
+ return ret;
ret = -ENOMEM;
base = devm_ioremap(&dev->dev, dev->res.start,
resource_size(&dev->res));
if (!base)
goto out_release;
nmk_rng.priv = (unsigned long)base;
- ret = hwrng_register(&nmk_rng);
+ ret = devm_hwrng_register(&dev->dev, &nmk_rng);
if (ret)
goto out_release;
return 0;
out_release:
amba_release_regions(dev);
-out_clk:
- clk_disable(rng_clk);
return ret;
}
-static int nmk_rng_remove(struct amba_device *dev)
+static void nmk_rng_remove(struct amba_device *dev)
{
- hwrng_unregister(&nmk_rng);
amba_release_regions(dev);
- clk_disable(rng_clk);
- return 0;
}
-static struct amba_id nmk_rng_ids[] = {
+static const struct amba_id nmk_rng_ids[] = {
{
.id = 0x000805e1,
.mask = 0x000fffff, /* top bits are rev and cfg: accept all */
--
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