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Subject[PATCH] Fix undefined ioremap_huge_init when CONFIG_MMU is not set
Date
Fix a build error, undefined reference to ioremap_huge_init, when
CONFIG_MMU is not defined on linux-next and -mm tree.

lib/ioremap.o is not linked to the kernel when CONFIG_MMU is not
defined.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
---
include/linux/io.h | 5 +++--
lib/ioremap.c | 1 -
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/io.h b/include/linux/io.h
index 1ce8b4e..4cc299c 100644
--- a/include/linux/io.h
+++ b/include/linux/io.h
@@ -38,11 +38,12 @@ static inline int ioremap_page_range(unsigned long addr, unsigned long end,
}
#endif

-void __init ioremap_huge_init(void);
-
#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
+void __init ioremap_huge_init(void);
int arch_ioremap_pud_supported(void);
int arch_ioremap_pmd_supported(void);
+#else
+static inline void ioremap_huge_init(void) { }
#endif

/*
diff --git a/lib/ioremap.c b/lib/ioremap.c
index 3055ada..be24906 100644
--- a/lib/ioremap.c
+++ b/lib/ioremap.c
@@ -46,7 +46,6 @@ static inline int ioremap_pmd_enabled(void)
}

#else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */
-void __init ioremap_huge_init(void) { }
static inline int ioremap_pud_enabled(void) { return 0; }
static inline int ioremap_pmd_enabled(void) { return 0; }
#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */

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