linux-kernel - [PATCH] mm: do not export ioremap_page

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Date:   Sun, 22 Jan 2017 20:58:01 +0800
From:   zhongjiang <zhongjiang@...wei.com>
To:     <akpm@...ux-foundation.org>, <minchan@...nel.org>,
        <mhocko@...nel.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] mm: do not export ioremap_page_range symbol for external module

From: zhong jiang <zhongjiang@...wei.com>

Recently, I find the ioremap_page_range had been abusing. The improper
address mapping is a issue. it will result in the crash. so, remove
the symbol. It can be replaced by the ioremap_cache or others symbol.

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 lib/ioremap.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/ioremap.c b/lib/ioremap.c
index 86c8911..a3e14ce 100644
--- a/lib/ioremap.c
+++ b/lib/ioremap.c
@@ -144,4 +144,3 @@ int ioremap_page_range(unsigned long addr,
 
 	return err;
 }
-EXPORT_SYMBOL_GPL(ioremap_page_range);
-- 
1.8.3.1