disable cpu isolcpus

hc

2023-12-09 958e46acc8e900e8569dd467c1af9b8d2d019394

 kernel/arch/powerpc/platforms/powernv/opal-prd.c
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@@ -1,17 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * OPAL Runtime Diagnostics interface driver
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  * Supported on POWERNV platform
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  *
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  * Copyright IBM Corporation 2015
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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 version 2 as
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- * published 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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 #define pr_fmt(fmt) "opal-prd: " fmt
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@@ -32,7 +24,7 @@
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 #include <linux/uaccess.h>
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-/**
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+/*
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  * The msg member must be at the end of the struct, as it's followed by the
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  * message data.
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  */
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@@ -350,7 +342,7 @@
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 	int msg_size, item_size;
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 	unsigned long flags;
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-	if (msg_type != OPAL_MSG_PRD)
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+	if (msg_type != OPAL_MSG_PRD && msg_type != OPAL_MSG_PRD2)
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 		return 0;
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 	/* Calculate total size of the message and item we need to store. The
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@@ -380,6 +372,12 @@
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 	.priority	= 0,
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 };
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+static struct notifier_block opal_prd_event_nb2 = {
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+	.notifier_call	= opal_prd_msg_notifier,
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+	.next		= NULL,
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+	.priority	= 0,
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+};
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+
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 static int opal_prd_probe(struct platform_device *pdev)
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 {
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 	int rc;
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@@ -401,11 +399,20 @@
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 		return rc;
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 	}
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+	rc = opal_message_notifier_register(OPAL_MSG_PRD2, &opal_prd_event_nb2);
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+	if (rc) {
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+		pr_err("Couldn't register PRD2 event notifier\n");
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+		opal_message_notifier_unregister(OPAL_MSG_PRD, &opal_prd_event_nb);
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+		return rc;
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+	}
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+
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 	rc = misc_register(&opal_prd_dev);
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 	if (rc) {
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 		pr_err("failed to register miscdev\n");
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 		opal_message_notifier_unregister(OPAL_MSG_PRD,
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 				&opal_prd_event_nb);
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+		opal_message_notifier_unregister(OPAL_MSG_PRD2,
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+				&opal_prd_event_nb2);
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 		return rc;
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 	}
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@@ -416,6 +423,7 @@
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 {
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 	misc_deregister(&opal_prd_dev);
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 	opal_message_notifier_unregister(OPAL_MSG_PRD, &opal_prd_event_nb);
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+	opal_message_notifier_unregister(OPAL_MSG_PRD2, &opal_prd_event_nb2);
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 	return 0;
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 }
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