From c4028fa2daa059ac9231ab3a4f57cbae814b3625 Mon Sep 17 00:00:00 2001
From: Christophe Leroy <christophe.leroy@c-s.fr>
Date: Wed, 21 Aug 2019 10:13:32 +0000
Subject: [PATCH] powerpc/mm: drop #ifdef CONFIG_MMU in is_ioremap_addr()

References: bsc#1065729
Patch-mainline: v5.5-rc1
Git-commit: c4028fa2daa059ac9231ab3a4f57cbae814b3625

powerpc always selects CONFIG_MMU and CONFIG_MMU is not checked
anywhere else in powerpc code.

Drop the #ifdef and the alternative part of is_ioremap_addr()

Fixes: 9bd3bb6703d8 ("mm/nvdimm: add is_ioremap_addr and use that to check ioremap address")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/de395e444fb8dd7a6365c3314d78e15ebb3d7d1b.1566382245.git.christophe.leroy@c-s.fr
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
 arch/powerpc/include/asm/pgtable.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 4053b2ab427c..0e4ec8cc37b7 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -157,13 +157,9 @@ static inline bool pgd_is_leaf(pgd_t pgd)
 #define is_ioremap_addr is_ioremap_addr
 static inline bool is_ioremap_addr(const void *x)
 {
-#ifdef CONFIG_MMU
 	unsigned long addr = (unsigned long)x;
 
 	return addr >= IOREMAP_BASE && addr < IOREMAP_END;
-#else
-	return false;
-#endif
 }
 #endif /* CONFIG_PPC64 */
 
-- 
2.23.0