add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/hwspinlock/sprd_hwspinlock.c
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@@ -15,7 +15,6 @@
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 #include <linux/of.h>
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 #include <linux/of_device.h>
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 #include <linux/platform_device.h>
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-#include <linux/pm_runtime.h>
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 #include <linux/slab.h>
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 #include "hwspinlock_internal.h"
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@@ -79,11 +78,17 @@
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 	.relax = sprd_hwspinlock_relax,
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 };
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+static void sprd_hwspinlock_disable(void *data)
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+{
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+	struct sprd_hwspinlock_dev *sprd_hwlock = data;
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+
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+	clk_disable_unprepare(sprd_hwlock->clk);
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+}
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+
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 static int sprd_hwspinlock_probe(struct platform_device *pdev)
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 {
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 	struct sprd_hwspinlock_dev *sprd_hwlock;
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 	struct hwspinlock *lock;
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-	struct resource *res;
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 	int i, ret;
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 	if (!pdev->dev.of_node)
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@@ -96,8 +101,7 @@
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 	if (!sprd_hwlock)
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 		return -ENOMEM;
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	sprd_hwlock->base = devm_ioremap_resource(&pdev->dev, res);
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+	sprd_hwlock->base = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(sprd_hwlock->base))
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 		return PTR_ERR(sprd_hwlock->base);
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@@ -107,7 +111,17 @@
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 		return PTR_ERR(sprd_hwlock->clk);
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 	}
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-	clk_prepare_enable(sprd_hwlock->clk);
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+	ret = clk_prepare_enable(sprd_hwlock->clk);
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+	if (ret)
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+		return ret;
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+
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+	ret = devm_add_action_or_reset(&pdev->dev, sprd_hwspinlock_disable,
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+				       sprd_hwlock);
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+	if (ret) {
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+		dev_err(&pdev->dev,
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+			"Failed to add hwspinlock disable action\n");
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+		return ret;
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+	}
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 	/* set the hwspinlock to record user id to identify subsystems */
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 	writel(HWSPINLOCK_USER_BITS, sprd_hwlock->base + HWSPINLOCK_RECCTRL);
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@@ -118,27 +132,10 @@
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 	}
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 	platform_set_drvdata(pdev, sprd_hwlock);
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-	pm_runtime_enable(&pdev->dev);
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-	ret = hwspin_lock_register(&sprd_hwlock->bank, &pdev->dev,
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-				   &sprd_hwspinlock_ops, 0, SPRD_HWLOCKS_NUM);
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-	if (ret) {
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-		pm_runtime_disable(&pdev->dev);
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-		clk_disable_unprepare(sprd_hwlock->clk);
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-		return ret;
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-	}
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-
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-	return 0;
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-}
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-
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-static int sprd_hwspinlock_remove(struct platform_device *pdev)
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-{
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-	struct sprd_hwspinlock_dev *sprd_hwlock = platform_get_drvdata(pdev);
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-
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-	hwspin_lock_unregister(&sprd_hwlock->bank);
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-	pm_runtime_disable(&pdev->dev);
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-	clk_disable_unprepare(sprd_hwlock->clk);
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-	return 0;
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+	return devm_hwspin_lock_register(&pdev->dev, &sprd_hwlock->bank,
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+					 &sprd_hwspinlock_ops, 0,
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+					 SPRD_HWLOCKS_NUM);
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 }
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 static const struct of_device_id sprd_hwspinlock_of_match[] = {
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@@ -149,7 +146,6 @@
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 static struct platform_driver sprd_hwspinlock_driver = {
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 	.probe = sprd_hwspinlock_probe,
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-	.remove = sprd_hwspinlock_remove,
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 	.driver = {
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 		.name = "sprd_hwspinlock",
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 		.of_match_table = of_match_ptr(sprd_hwspinlock_of_match),