diff options
Diffstat (limited to 'arch/x86/mm/iomap_32.c')
-rw-r--r-- | arch/x86/mm/iomap_32.c | 15 |
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 | 23 | int is_io_mapping_possible(resource_size_t base, unsigned long size) |
24 | int | ||
25 | is_io_mapping_possible(resource_size_t base, unsigned long size) | ||
26 | { | ||
27 | return 1; | ||
28 | } | ||
29 | #else | ||
30 | int | ||
31 | is_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 | 32 | EXPORT_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 | */ |