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 <sfr@xxxxxxxxxxxxxxxx>
Fixes: cafaf14a5d8f ("io-mapping: Always create a struct to hold metadata about the io-mapping")
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: linux-mm@xxxxxxxxx
---
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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