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-rw-r--r--arch/x86/mm/iomap_32.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index 6c2b1af16926..04102d42ff42 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -20,23 +20,16 @@
20#include <asm/pat.h> 20#include <asm/pat.h>
21#include <linux/module.h> 21#include <linux/module.h>
22 22
23#ifdef CONFIG_X86_PAE 23int is_io_mapping_possible(resource_size_t base, unsigned long size)
24int
25is_io_mapping_possible(resource_size_t base, unsigned long size)
26{
27 return 1;
28}
29#else
30int
31is_io_mapping_possible(resource_size_t base, unsigned long size)
32{ 24{
25#ifndef CONFIG_X86_PAE
33 /* There is no way to map greater than 1 << 32 address without PAE */ 26 /* There is no way to map greater than 1 << 32 address without PAE */
34 if (base + size > 0x100000000ULL) 27 if (base + size > 0x100000000ULL)
35 return 0; 28 return 0;
36 29#endif
37 return 1; 30 return 1;
38} 31}
39#endif 32EXPORT_SYMBOL_GPL(is_io_mapping_possible);
40 33
41/* Map 'pfn' using fixed map 'type' and protections 'prot' 34/* Map 'pfn' using fixed map 'type' and protections 'prot'
42 */ 35 */