[git pull] x86 fixes

Ingo Molnar
2009-03-02T08:48:20Z

Linus,

Please pull the latest x86-fixes-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86-fixes-for-linus

out-of-topic modifications in x86-fixes-for-linus:
--------------------------------------------------
include/linux/io-mapping.h # 5ce04e3: fix warning in io_mapping_map_wc(

Thanks,

Ingo

------------------>
Ingo Molnar (1):
x86: i915 needs pgprot_writecombine() and is_io_mapping_possible()

Pallipadi, Venkatesh (1):
fix warning in io_mapping_map_wc()

arch/x86/mm/iomap_32.c | 15 ++++-----------
arch/x86/mm/pat.c | 2 ++
include/linux/io-mapping.h | 5 ++++-
3 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index 6c2b1af..04102d4 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -20,23 +20,16 @@
#include <asm/pat.h>
#include <linux/module.h>

-#ifdef CONFIG_X86_PAE
-int
-is_io_mapping_possible(resource_size_t base, unsigned long size)
-{
- return 1;
-}
-#else
-int
-is_io_mapping_possible(resource_size_t base, unsigned long size)
+int is_io_mapping_possible(resource_size_t base, unsigned long size)
{
+#ifndef CONFIG_X86_PAE
/* There is no way to map greater than 1 << 32 address without PAE */
if (base + size > 0x100000000ULL)
return 0;
-
+#endif
return 1;
}
-#endif
+EXPORT_SYMBOL_GPL(is_io_mapping_possible);

/* Map 'pfn' using fixed map 'type' and protections 'prot'
*/
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index aebbf67..e0ab173 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -11,6 +11,7 @@
#include <linux/bootmem.h>
#include <linux/debugfs.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/fs.h>
@@ -868,6 +869,7 @@ pgprot_t pgprot_writecombine(pgprot_t prot)
else
return pgprot_noncached(prot);
}
+EXPORT_SYMBOL_GPL(pgprot_writecombine);

#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_X86_PAT)

diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index cbc2f0c..0adb0f9 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -91,8 +91,11 @@ io_mapping_unmap_atomic(void *vaddr)
static inline void *
io_mapping_map_wc(struct io_mapping *mapping, unsigned long offset)
{
+ resource_size_t phys_addr;
+
BUG_ON(offset >= mapping->size);
- resource_size_t phys_addr = mapping->base + offset;
+ phys_addr = mapping->base + offset;
+
return ioremap_wc(phys_addr, PAGE_SIZE);
}