linux-kernel - [PATCH] MIPS: mm: Fix build error

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Message-Id: <20200927092610.1378-1-shipujin.t@gmail.com>
Date:   Sun, 27 Sep 2020 17:26:10 +0800
From:   Pujin Shi <shipujin.t@...il.com>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     Mike Rapoport <rppt@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Paul Burton <paulburton@...nel.org>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Kees Cook <keescook@...omium.org>,
        Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        shipujin.t@...il.com
Subject: [PATCH] MIPS: mm: Fix build error

arch/mips/mm/init.c: In function 'mem_init':
././include/linux/compiler_types.h:319:38: error: call to '__compiletime_assert_321' declared with attribute error: BUILD_BUG_ON failed: IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT)
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                      ^
././include/linux/compiler_types.h:300:4: note: in definition of macro '__compiletime_assert'
    prefix ## suffix();    \
    ^
././include/linux/compiler_types.h:319:2: note: in expansion of macro '_compiletime_assert'
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^
./include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
 #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                     ^
./include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
  BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
  ^
arch/mips/mm/init.c:458:2: note: in expansion of macro 'BUILD_BUG_ON'
  BUILD_BUG_ON(IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT));
  ^

Signed-off-by: Pujin Shi <shipujin.t@...il.com>
---
 arch/mips/mm/init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 6c7bbfe35ba3..71dfdf1cb88a 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -455,7 +455,7 @@ void __init mem_init(void)
 	 * When _PFN_SHIFT is greater than PAGE_SHIFT we won't have enough PTE
 	 * bits to hold a full 32b physical address on MIPS32 systems.
 	 */
-	BUILD_BUG_ON(IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT));
+	WARN_ON(IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT));
 
 #ifdef CONFIG_HIGHMEM
 #ifdef CONFIG_DISCONTIGMEM
-- 
2.18.1