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| author | Ingo Molnar <mingo@elte.hu> | 2009-02-26 13:02:23 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-26 13:02:23 +0100 |
| commit | 8e818179eb9e8f9e44d8410dd2a25077d026a08e (patch) | |
| tree | 7d08afd30c95c04129c20693d974a18799caeb5a /arch/x86/include/asm/io.h | |
| parent | 742bd95ba96e19b3f7196c3a0834ebc17c8ba006 (diff) | |
| parent | ecc25fbd6b9e07b33895c61ddf84006b00f55d99 (diff) | |
| download | talos-obmc-linux-8e818179eb9e8f9e44d8410dd2a25077d026a08e.tar.gz talos-obmc-linux-8e818179eb9e8f9e44d8410dd2a25077d026a08e.zip | |
Merge branch 'x86/core' into perfcounters/core
Conflicts:
arch/x86/kernel/apic/apic.c
arch/x86/kernel/irqinit_32.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/io.h')
| -rw-r--r-- | arch/x86/include/asm/io.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h index 4f8e820cf38f..683d0b4c00fc 100644 --- a/arch/x86/include/asm/io.h +++ b/arch/x86/include/asm/io.h @@ -124,10 +124,15 @@ static inline void *phys_to_virt(phys_addr_t address) /* * ISA I/O bus memory addresses are 1:1 with the physical address. + * However, we truncate the address to unsigned int to avoid undesirable + * promitions in legacy drivers. */ -#define isa_virt_to_bus (unsigned long)virt_to_phys -#define isa_page_to_bus page_to_phys -#define isa_bus_to_virt phys_to_virt +static inline unsigned int isa_virt_to_bus(volatile void *address) +{ + return (unsigned int)virt_to_phys(address); +} +#define isa_page_to_bus(page) ((unsigned int)page_to_phys(page)) +#define isa_bus_to_virt phys_to_virt /* * However PCI ones are not necessarily 1:1 and therefore these interfaces |
