linux-kernel - [PATCH 1/5] m68knommu: add a pgprot

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Date:   Thu, 25 Jul 2019 08:33:57 +0200
From:   Christoph Hellwig <hch@....de>
To:     iommu@...ts.linux-foundation.org,
        Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     Takashi Iwai <tiwai@...e.de>, Robin Murphy <robin.murphy@....com>,
        Michal Simek <monstr@...str.eu>,
        linux-arm-kernel@...ts.infradead.org,
        linux-m68k@...ts.linux-m68k.org, linux-parisc@...r.kernel.org,
        linux-sh@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
        linuxppc-dev@...ts.ozlabs.org, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] m68knommu: add a pgprot_noncached stub

Provide a pgprot_noncached like all the other nommu ports so that
common code can rely on it being able to be present.  Note that this is
generally code that is not actually run on nommu, but at least we can
avoid nasty ifdefs by having a stub.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 arch/m68k/include/asm/pgtable_no.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/m68k/include/asm/pgtable_no.h b/arch/m68k/include/asm/pgtable_no.h
index fc3a96c77bd8..06194c7ba151 100644
--- a/arch/m68k/include/asm/pgtable_no.h
+++ b/arch/m68k/include/asm/pgtable_no.h
@@ -29,6 +29,8 @@
 #define PAGE_READONLY	__pgprot(0)
 #define PAGE_KERNEL	__pgprot(0)
 
+#define pgprot_noncached(prot)   (prot)
+
 extern void paging_init(void);
 #define swapper_pg_dir ((pgd_t *) 0)
 
-- 
2.20.1