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authorAkinobu Mita <akinobu.mita@gmail.com>2009-03-11 23:33:18 +0900
committerIngo Molnar <mingo@elte.hu>2009-03-11 15:47:46 +0100
commitbb6d59ca927d855ffac567b35c0a790c67016103 (patch)
treecbfa2c1b8fd85c1ed93d077625a2e15b5b8a8ea9 /arch/x86/mm/iomap_32.c
parent78b020d035074fc3aa4d017353bb2c32e2aff56f (diff)
downloadop-kernel-dev-bb6d59ca927d855ffac567b35c0a790c67016103.zip
op-kernel-dev-bb6d59ca927d855ffac567b35c0a790c67016103.tar.gz
x86: unify kmap_atomic_pfn() and iomap_atomic_prot_pfn()
kmap_atomic_pfn() and iomap_atomic_prot_pfn() are almost same except pgprot. This patch removes the code duplication for these two functions. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> LKML-Reference: <20090311143317.GA22244@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/iomap_32.c')
-rw-r--r--arch/x86/mm/iomap_32.c13
1 files changed, 2 insertions, 11 deletions
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index 04102d4..592984e 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -18,6 +18,7 @@
#include <asm/iomap.h>
#include <asm/pat.h>
+#include <asm/highmem.h>
#include <linux/module.h>
int is_io_mapping_possible(resource_size_t base, unsigned long size)
@@ -36,11 +37,6 @@ EXPORT_SYMBOL_GPL(is_io_mapping_possible);
void *
iomap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot)
{
- enum fixed_addresses idx;
- unsigned long vaddr;
-
- pagefault_disable();
-
/*
* For non-PAT systems, promote PAGE_KERNEL_WC to PAGE_KERNEL_UC_MINUS.
* PAGE_KERNEL_WC maps to PWT, which translates to uncached if the
@@ -50,12 +46,7 @@ iomap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot)
if (!pat_enabled && pgprot_val(prot) == pgprot_val(PAGE_KERNEL_WC))
prot = PAGE_KERNEL_UC_MINUS;
- idx = type + KM_TYPE_NR*smp_processor_id();
- vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
- set_pte(kmap_pte-idx, pfn_pte(pfn, prot));
- arch_flush_lazy_mmu_mode();
-
- return (void*) vaddr;
+ return kmap_atomic_prot_pfn(pfn, type, prot);
}
EXPORT_SYMBOL_GPL(iomap_atomic_prot_pfn);
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