From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/drivers/watchdog/zx2967_wdt.c | 40 +++++++++++++++-------------------------
1 files changed, 15 insertions(+), 25 deletions(-)
diff --git a/kernel/drivers/watchdog/zx2967_wdt.c b/kernel/drivers/watchdog/zx2967_wdt.c
index 9261f7c..bf183e7 100644
--- a/kernel/drivers/watchdog/zx2967_wdt.c
+++ b/kernel/drivers/watchdog/zx2967_wdt.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* watchdog driver for ZTE's zx2967 family
*
* Copyright (C) 2017 ZTE Ltd.
*
* Author: Baoyou Xie <baoyou.xie@linaro.org>
- *
- * License terms: GNU General Public License (GPL) version 2
*/
#include <linux/clk.h>
@@ -188,11 +187,15 @@
of_node_put(out_args.np);
}
+static void zx2967_clk_disable_unprepare(void *data)
+{
+ clk_disable_unprepare(data);
+}
+
static int zx2967_wdt_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct zx2967_wdt *wdt;
- struct resource *base;
int ret;
struct reset_control *rstc;
@@ -207,10 +210,9 @@
wdt->wdt_device.timeout = ZX2967_WDT_DEFAULT_TIMEOUT;
wdt->wdt_device.max_timeout = ZX2967_WDT_MAX_TIMEOUT;
wdt->wdt_device.min_timeout = ZX2967_WDT_MIN_TIMEOUT;
- wdt->wdt_device.parent = &pdev->dev;
+ wdt->wdt_device.parent = dev;
- base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- wdt->reg_base = devm_ioremap_resource(dev, base);
+ wdt->reg_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(wdt->reg_base))
return PTR_ERR(wdt->reg_base);
@@ -227,13 +229,16 @@
dev_err(dev, "failed to enable clock\n");
return ret;
}
+ ret = devm_add_action_or_reset(dev, zx2967_clk_disable_unprepare,
+ wdt->clock);
+ if (ret)
+ return ret;
clk_set_rate(wdt->clock, ZX2967_WDT_CLK_FREQ);
rstc = devm_reset_control_get_exclusive(dev, NULL);
if (IS_ERR(rstc)) {
dev_err(dev, "failed to get rstc");
- ret = PTR_ERR(rstc);
- goto err;
+ return PTR_ERR(rstc);
}
reset_control_assert(rstc);
@@ -244,26 +249,12 @@
ZX2967_WDT_DEFAULT_TIMEOUT, dev);
watchdog_set_nowayout(&wdt->wdt_device, WATCHDOG_NOWAYOUT);
- ret = watchdog_register_device(&wdt->wdt_device);
+ ret = devm_watchdog_register_device(dev, &wdt->wdt_device);
if (ret)
- goto err;
+ return ret;
dev_info(dev, "watchdog enabled (timeout=%d sec, nowayout=%d)",
wdt->wdt_device.timeout, WATCHDOG_NOWAYOUT);
-
- return 0;
-
-err:
- clk_disable_unprepare(wdt->clock);
- return ret;
-}
-
-static int zx2967_wdt_remove(struct platform_device *pdev)
-{
- struct zx2967_wdt *wdt = platform_get_drvdata(pdev);
-
- watchdog_unregister_device(&wdt->wdt_device);
- clk_disable_unprepare(wdt->clock);
return 0;
}
@@ -276,7 +267,6 @@
static struct platform_driver zx2967_wdt_driver = {
.probe = zx2967_wdt_probe,
- .remove = zx2967_wdt_remove,
.driver = {
.name = "zx2967-wdt",
.of_match_table = of_match_ptr(zx2967_wdt_match),
--
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