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* [PATCH] riscv: Move nommu pgprot_* macros to pgtable.h
@ 2020-06-27 11:01 Pekka Enberg
  0 siblings, 0 replies; only message in thread
From: Pekka Enberg @ 2020-06-27 11:01 UTC (permalink / raw)
  To: linux-riscv; +Cc: Pekka Enberg, Kefeng Wang

The mmio.h header file defines some pgprot macros for !CONFIG_MMU, but
pgtable.h seems like a better place for them.

Compile tested with defconfig + !CONFIG_MMU.

Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---
 arch/riscv/include/asm/mmio.h    | 6 ------
 arch/riscv/include/asm/pgtable.h | 4 ++++
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/arch/riscv/include/asm/mmio.h b/arch/riscv/include/asm/mmio.h
index 56053c9838b2..aff6c33ab0c0 100644
--- a/arch/riscv/include/asm/mmio.h
+++ b/arch/riscv/include/asm/mmio.h
@@ -14,12 +14,6 @@
 #include <linux/types.h>
 #include <asm/mmiowb.h>
 
-#ifndef CONFIG_MMU
-#define pgprot_noncached(x)	(x)
-#define pgprot_writecombine(x)	(x)
-#define pgprot_device(x)	(x)
-#endif /* CONFIG_MMU */
-
 /* Generic IO read/write.  These perform native-endian accesses. */
 #define __raw_writeb __raw_writeb
 static inline void __raw_writeb(u8 val, volatile void __iomem *addr)
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index eaea1f717010..e82a32112b7e 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -459,6 +459,10 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma,
 
 static inline void __kernel_map_pages(struct page *page, int numpages, int enable) {}
 
+#define pgprot_noncached(x)	(x)
+#define pgprot_writecombine(x)	(x)
+#define pgprot_device(x)	(x)
+
 #endif /* !CONFIG_MMU */
 
 #define kern_addr_valid(addr)   (1) /* FIXME */
-- 
2.25.0


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2020-06-27 11:01 [PATCH] riscv: Move nommu pgprot_* macros to pgtable.h Pekka Enberg

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