add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/acpi/acpi_lpit.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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  * acpi_lpit.c - LPIT table processing functions
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  *
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  * Copyright (C) 2017 Intel Corporation. All rights reserved.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License version
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- * 2 as 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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 #include <linux/cpu.h>
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@@ -112,7 +104,7 @@
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 	info->gaddr = lpit_native->residency_counter;
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 	if (info->gaddr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
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-		info->iomem_addr = ioremap_nocache(info->gaddr.address,
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+		info->iomem_addr = ioremap(info->gaddr.address,
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 						   info->gaddr.bit_width / 8);
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 		if (!info->iomem_addr)
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 			return;
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@@ -137,7 +129,7 @@
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 static void lpit_process(u64 begin, u64 end)
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 {
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-	while (begin + sizeof(struct acpi_lpit_native) < end) {
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+	while (begin + sizeof(struct acpi_lpit_native) <= end) {
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 		struct acpi_lpit_native *lpit_native = (struct acpi_lpit_native *)begin;
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 		if (!lpit_native->header.type && !lpit_native->header.flags) {
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@@ -156,14 +148,14 @@
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 void acpi_init_lpit(void)
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 {
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 	acpi_status status;
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-	u64 lpit_begin;
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 	struct acpi_table_lpit *lpit;
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 	status = acpi_get_table(ACPI_SIG_LPIT, 0, (struct acpi_table_header **)&lpit);
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-
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 	if (ACPI_FAILURE(status))
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 		return;
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-	lpit_begin = (u64)lpit + sizeof(*lpit);
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-	lpit_process(lpit_begin, lpit_begin + lpit->header.length);
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+	lpit_process((u64)lpit + sizeof(*lpit),
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+		     (u64)lpit + lpit->header.length);
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+
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+	acpi_put_table((struct acpi_table_header *)lpit);
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 }