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phys_to_pfn_t: use phys_addr_t

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A dma_addr_t is potentially smaller than a phys_addr_t on some archs.
Don't truncate the address when doing the pfn conversion.

Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Reported-by: Matthew Wilcox <willy@linux.intel.com>
[willy: fix pfn_t_to_phys as well]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2016-01-22 09:43:28 -08:00
commit 76e9f0ee52
3 changed files with 4 additions and 4 deletions
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4
include/linux/pfn_t.h
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@ -29,7 +29,7 @@ static inline pfn_t pfn_to_pfn_t(unsigned long pfn)
return __pfn_to_pfn_t(pfn, 0);
}
extern pfn_t phys_to_pfn_t(dma_addr_t addr, unsigned long flags);
extern pfn_t phys_to_pfn_t(phys_addr_t addr, unsigned long flags);
static inline bool pfn_t_has_page(pfn_t pfn)
{
@ -48,7 +48,7 @@ static inline struct page *pfn_t_to_page(pfn_t pfn)
return NULL;
}
static inline dma_addr_t pfn_t_to_phys(pfn_t pfn)
static inline phys_addr_t pfn_t_to_phys(pfn_t pfn)
{
return PFN_PHYS(pfn_t_to_pfn(pfn));
}