Merge "drivers: edac: Add panic notifier for kryo EDAC device" (4d8055ef) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/edac/kryo_arm64_edac.c

+21 −1

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
		* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
		*/

		#include <linux/kernel.h>
		@@ -11,6 +11,7 @@
		#include <linux/cpu.h>
		#include <linux/cpu_pm.h>
		#include <linux/interrupt.h>
		#include <linux/notifier.h>
		#include <linux/of_irq.h>

		#include <asm/cputype.h>
		@@ -136,6 +137,7 @@ struct erp_drvdata {
		struct edac_device_ctl_info *edev_ctl;
		struct erp_drvdata __percpu **erp_cpu_drvdata;
		struct notifier_block nb_pm;
		struct notifier_block nb_panic;
		int ppi;
		};

		@@ -403,6 +405,21 @@ void kryo_poll_cache_errors(struct edac_device_ctl_info *edev_ctl)
		edev_ctl, 0);
		}

		static int kryo_cpu_panic_notify(struct notifier_block *this,
		unsigned long event, void *ptr)
		{
		struct edac_device_ctl_info *edev_ctl =
		panic_handler_drvdata->edev_ctl;

		edev_ctl->panic_on_ce = 0;
		edev_ctl->panic_on_ue = 0;

		kryo_check_l3_scu_error(edev_ctl);
		kryo_check_l1_l2_ecc(edev_ctl);

		return NOTIFY_OK;
		}

		static irqreturn_t kryo_l1_l2_handler(int irq, void *drvdata)
		{
		kryo_check_l1_l2_ecc(panic_handler_drvdata->edev_ctl);
		@@ -488,6 +505,9 @@ static int kryo_cpu_erp_probe(struct platform_device *pdev)
		drv->edev_ctl->panic_on_ce = ARM64_ERP_PANIC_ON_CE;
		drv->edev_ctl->panic_on_ue = ARM64_ERP_PANIC_ON_UE;
		drv->nb_pm.notifier_call = kryo_pmu_cpu_pm_notify;
		drv->nb_panic.notifier_call = kryo_cpu_panic_notify;
		atomic_notifier_chain_register(&panic_notifier_list,
		&drv->nb_panic);
		platform_set_drvdata(pdev, drv);

		rc = edac_device_add_device(drv->edev_ctl);