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x86-32: Pass the full resource data to ioremap()

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It appears that 64-bit PCI resources cannot possibly ever have worked on
x86-32 even when the RESOURCES_64BIT config option was set, because any
driver that tried to [pci_]ioremap() the resource would have been unable
to do so because the high 32 bits would have been silently dropped on
the floor by the ioremap() routines that only used "unsigned long".

Change them to use "resource_size_t" instead, which properly encodes the
whole 64-bit resource data if RESOURCES_64BIT is enabled.

Acked-by: H. Peter Anvin <hpa@kernel.org>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds
2008-03-24 11:22:39 -07:00
parent 92896bd9fd
commit b9e76a0074
4 changed files with 10 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/asm-x86/io_32.h
View File

@@ -114,13 +114,13 @@ static inline void * phys_to_virt(unsigned long address)
* If the area you are trying to map is a PCI BAR you should have a
* look at pci_iomap().
*/
extern void __iomem *ioremap_nocache(unsigned long offset, unsigned long size);
extern void __iomem *ioremap_cache(unsigned long offset, unsigned long size);
extern void __iomem *ioremap_nocache(resource_size_t offset, unsigned long size);
extern void __iomem *ioremap_cache(resource_size_t offset, unsigned long size);
/*
* The default ioremap() behavior is non-cached:
*/
static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
{
return ioremap_nocache(offset, size);
}

6
include/asm-x86/io_64.h
View File

@@ -158,13 +158,13 @@ extern void early_iounmap(void *addr, unsigned long size);
* it's useful if some control registers are in such an area and write combining
* or read caching is not desirable:
*/
extern void __iomem *ioremap_nocache(unsigned long offset, unsigned long size);
extern void __iomem *ioremap_cache(unsigned long offset, unsigned long size);
extern void __iomem *ioremap_nocache(resource_size_t offset, unsigned long size);
extern void __iomem *ioremap_cache(resource_size_t offset, unsigned long size);
/*
* The default ioremap() behavior is non-cached:
*/
static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
{
return ioremap_nocache(offset, size);
}