linux-kernel - [PATCH] microblaze: Provide pgprot_device/writecombine macros for nommu

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Message-Id: <e9444122a422915e9a19daf9dc4c0a62ce7932f4.1519377667.git.michal.simek@xilinx.com>
Date:   Fri, 23 Feb 2018 10:21:11 +0100
From:   Michal Simek <michal.simek@...inx.com>
To:     linux-kernel@...r.kernel.org, monstr@...str.eu
Cc:     David Woodhouse <dwmw@...zon.co.uk>
Subject: [PATCH] microblaze: Provide pgprot_device/writecombine macros for nommu

These macros are required for generic mmap.c implementation created by:
commit f719582435af ("PCI: Add pci_mmap_resource_range() and use it for
ARM64") which Microblaze is going to use.

Reported-by: kbuild test robot <fengguang.wu@...el.com>
Suggested-by: David Woodhouse <dwmw@...zon.co.uk>
Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 arch/microblaze/include/asm/pgtable.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index e53b8532353c..db8b1fa83452 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -33,6 +33,8 @@
 #define PAGE_KERNEL		__pgprot(0) /* these mean nothing to non MMU */
 
 #define pgprot_noncached(x)	(x)
+#define pgprot_writecombine	pgprot_noncached
+#define pgprot_device		pgprot_noncached
 
 #define __swp_type(x)		(0)
 #define __swp_offset(x)		(0)
-- 
1.9.1