PAGE_KERNEL_IO is an x86-ism. Though it is used to define the pgprot_t
used for the iomapped region, it itself is just PAGE_KERNEL. On all
other arches, PAGE_KERNEL_IO is undefined so in a general header we must
refrain from using it.

v2: include pgtable for pgprot_combine()

Reported-by: Stephen Rothwell <redacted>
Fixes: cafaf14a5d8f ("io-mapping: Always create a struct to hold metadata about the io-mapping")
Signed-off-by: Chris Wilson <redacted>
Cc: Daniel Vetter <redacted>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: linux-mm@kvack.org
---
 include/linux/io-mapping.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index b4c4b5c4216d..a87dd7fffc0a 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h

@@ -112,7 +112,7 @@ io_mapping_unmap(void __iomem *vaddr)
 #else
 
 #include <linux/uaccess.h>
-#include <asm/pgtable_types.h>
+#include <asm/pgtable.h>
 
 /* Create the io_mapping object*/
 static inline struct io_mapping *

@@ -123,7 +123,7 @@ io_mapping_init_wc(struct io_mapping *iomap,
 	iomap->base = base;
 	iomap->size = size;
 	iomap->iomem = ioremap_wc(base, size);
-	iomap->prot = pgprot_writecombine(PAGE_KERNEL_IO);
+	iomap->prot = pgprot_writecombine(PAGE_KERNEL);
 
 	return iomap;
 }

-- 
2.9.3

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