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* [PATCH] io-mapping.h: s/PAGE_KERNEL_IO/PAGE_KERNEL/
@ 2016-08-23  7:22 ` Chris Wilson
  0 siblings, 0 replies; 16+ messages in thread
From: Chris Wilson @ 2016-08-23  7:22 UTC (permalink / raw)
  To: intel-gfx; +Cc: Chris Wilson, Daniel Vetter, Joonas Lahtinen, linux-mm

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.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: cafaf14a5d8f ("io-mapping: Always create a struct to hold metadata about the io-mapping")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: linux-mm@kvack.org
---
 include/linux/io-mapping.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index b4c4b5c4216d..ab690801eb59 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -112,7 +112,6 @@ io_mapping_unmap(void __iomem *vaddr)
 #else
 
 #include <linux/uaccess.h>
-#include <asm/pgtable_types.h>
 
 /* Create the io_mapping object*/
 static inline struct io_mapping *
@@ -123,7 +122,7 @@ 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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^ permalink raw reply related	[flat|nested] 16+ messages in thread

end of thread, other threads:[~2016-08-23 16:33 UTC | newest]

Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-08-23  7:22 [PATCH] io-mapping.h: s/PAGE_KERNEL_IO/PAGE_KERNEL/ Chris Wilson
2016-08-23  7:22 ` Chris Wilson
2016-08-23  7:51 ` ✗ Fi.CI.BAT: failure for " Patchwork
2016-08-23  8:04 ` [PATCH] " Joonas Lahtinen
2016-08-23  8:04   ` Joonas Lahtinen
2016-08-23 12:05   ` Daniel Vetter
2016-08-23 12:05     ` Daniel Vetter
2016-08-23 12:21     ` Chris Wilson
2016-08-23 12:21       ` Chris Wilson
2016-08-23 13:43       ` Daniel Vetter
2016-08-23 13:43         ` Daniel Vetter
2016-08-23 13:54         ` Chris Wilson
2016-08-23 13:54           ` Chris Wilson
2016-08-23 15:50         ` [PATCH v2] " Chris Wilson
2016-08-23 15:50           ` Chris Wilson
2016-08-23 16:32           ` Daniel Vetter

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