linux-kernel - [PATCH] sh: kdump: add some attribute to function

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Date:   Thu, 10 Dec 2020 14:49:58 +0800
From:   Yejune Deng <yejune.deng@...il.com>
To:     ysato@...rs.sourceforge.jp, dalias@...c.org
Cc:     yejune.deng@...il.com, linux-sh@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] sh: kdump: add some attribute to function

add '__iomem' for ioremap() and '__user' for copy_to_user().

Signed-off-by: Yejune Deng <yejune.deng@...il.com>
---
 arch/sh/kernel/crash_dump.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/sh/kernel/crash_dump.c b/arch/sh/kernel/crash_dump.c
index a908612..5b41b59 100644
--- a/arch/sh/kernel/crash_dump.c
+++ b/arch/sh/kernel/crash_dump.c
@@ -26,7 +26,7 @@
 ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
                                size_t csize, unsigned long offset, int userbuf)
 {
-	void  *vaddr;
+	void  __iomem *vaddr;
 
 	if (!csize)
 		return 0;
@@ -34,7 +34,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
 	vaddr = ioremap(pfn << PAGE_SHIFT, PAGE_SIZE);
 
 	if (userbuf) {
-		if (copy_to_user(buf, (vaddr + offset), csize)) {
+		if (copy_to_user((void __user *)buf, (vaddr + offset), csize)) {
 			iounmap(vaddr);
 			return -EFAULT;
 		}
-- 
1.9.1