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include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc() 

Use PHYS_PFN() macro in io_mapping_map_atomic_wc() instead of open coded
variant.

Link: http://lkml.kernel.org/r/20191209165624.56351-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Shevchenko 2020-01-30 22:17:32 -08:00 committed by Linus Torvalds
parent 47a2ebb7f5
commit 2b755626ca
1 changed files with 2 additions and 3 deletions
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5
include/linux/io-mapping.h
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@ -28,6 +28,7 @@ struct io_mapping {
#ifdef CONFIG_HAVE_ATOMIC_IOMAP
#include <linux/pfn.h>
#include <asm/iomap.h>
/*
* For small address space machines, mapping large objects
@ -64,12 +65,10 @@ io_mapping_map_atomic_wc(struct io_mapping *mapping,
unsigned long offset)
{
resource_size_t phys_addr;
unsigned long pfn;
BUG_ON(offset >= mapping->size);
phys_addr = mapping->base + offset;
pfn = (unsigned long) (phys_addr >> PAGE_SHIFT);
return iomap_atomic_prot_pfn(pfn, mapping->prot);
return iomap_atomic_prot_pfn(PHYS_PFN(phys_addr), mapping->prot);
}
static inline void