change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/watchdog/sbsa_gwdt.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * SBSA(Server Base System Architecture) Generic Watchdog driver
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  *
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@@ -6,15 +7,6 @@
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  *         Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
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  *         Al Stone <al.stone@linaro.org>
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  *         Timur Tabi <timur@codeaurora.org>
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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 2 as published
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- * by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  *
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  * ARM SBSA Generic Watchdog has two stage timeouts:
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  * the first signal (WS0) is for alerting the system by interrupt,
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@@ -46,7 +38,6 @@
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  * by WOR, in the single stage mode, the timeout is (WOR * 2); in the two
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  * stages mode, the timeout is WOR. The maximum timeout in the two stages mode
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  * is half of that in the single stage mode.
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- *
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  */
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 #include <linux/io.h>
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@@ -130,6 +121,7 @@
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 	struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);
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 	wdd->timeout = timeout;
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+	timeout = clamp_t(unsigned int, timeout, 1, wdd->max_hw_heartbeat_ms / 1000);
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 	if (action)
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 		writel(gwdt->clk * timeout,
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@@ -161,7 +153,7 @@
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 		timeleft += readl(gwdt->control_base + SBSA_GWDT_WOR);
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 	timeleft += lo_hi_readq(gwdt->control_base + SBSA_GWDT_WCV) -
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-		    arch_counter_get_cntvct();
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+		    arch_timer_read_counter();
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 	do_div(timeleft, gwdt->clk);
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@@ -231,7 +223,6 @@
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 	struct device *dev = &pdev->dev;
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 	struct watchdog_device *wdd;
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 	struct sbsa_gwdt *gwdt;
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-	struct resource *res;
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 	int ret, irq;
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 	u32 status;
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@@ -240,13 +231,11 @@
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 		return -ENOMEM;
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 	platform_set_drvdata(pdev, gwdt);
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	cf_base = devm_ioremap_resource(dev, res);
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+	cf_base = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(cf_base))
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 		return PTR_ERR(cf_base);
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
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-	rf_base = devm_ioremap_resource(dev, res);
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+	rf_base = devm_platform_ioremap_resource(pdev, 1);
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 	if (IS_ERR(rf_base))
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 		return PTR_ERR(rf_base);
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@@ -313,29 +302,14 @@
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 	 */
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 	sbsa_gwdt_set_timeout(wdd, wdd->timeout);
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-	ret = watchdog_register_device(wdd);
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+	watchdog_stop_on_reboot(wdd);
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+	ret = devm_watchdog_register_device(dev, wdd);
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 	if (ret)
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 		return ret;
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 	dev_info(dev, "Initialized with %ds timeout @ %u Hz, action=%d.%s\n",
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 		 wdd->timeout, gwdt->clk, action,
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 		 status & SBSA_GWDT_WCS_EN ? " [enabled]" : "");
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-
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-	return 0;
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-}
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-
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-static void sbsa_gwdt_shutdown(struct platform_device *pdev)
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-{
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-	struct sbsa_gwdt *gwdt = platform_get_drvdata(pdev);
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-
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-	sbsa_gwdt_stop(&gwdt->wdd);
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-}
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-
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-static int sbsa_gwdt_remove(struct platform_device *pdev)
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-{
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-	struct sbsa_gwdt *gwdt = platform_get_drvdata(pdev);
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-
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-	watchdog_unregister_device(&gwdt->wdd);
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 	return 0;
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 }
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@@ -385,8 +359,6 @@
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 		.of_match_table = sbsa_gwdt_of_match,
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 	},
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 	.probe = sbsa_gwdt_probe,
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-	.remove = sbsa_gwdt_remove,
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-	.shutdown = sbsa_gwdt_shutdown,
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 	.id_table = sbsa_gwdt_pdev_match,
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 };
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