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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/arch/arc/mm/ioremap.c
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@@ -1,9 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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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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 #include <linux/vmalloc.h>
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@@ -56,9 +53,10 @@
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 void __iomem *ioremap_prot(phys_addr_t paddr, unsigned long size,
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 			   unsigned long flags)
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 {
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+	unsigned int off;
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 	unsigned long vaddr;
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 	struct vm_struct *area;
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-	phys_addr_t off, end;
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+	phys_addr_t end;
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 	pgprot_t prot = __pgprot(flags);
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 	/* Don't allow wraparound, zero size */
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@@ -75,7 +73,7 @@
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 	/* Mappings have to be page-aligned */
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 	off = paddr & ~PAGE_MASK;
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-	paddr &= PAGE_MASK;
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+	paddr &= PAGE_MASK_PHYS;
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 	size = PAGE_ALIGN(end + 1) - paddr;
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 	/*
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@@ -95,7 +93,7 @@
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 EXPORT_SYMBOL(ioremap_prot);
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-void iounmap(const void __iomem *addr)
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+void iounmap(const volatile void __iomem *addr)
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 {
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 	/* weird double cast to handle phys_addr_t > 32 bits */
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 	if (arc_uncached_addr_space((phys_addr_t)(u32)addr))