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Subject[PATCH v1] io-mapping: Use PHYS_PFN() macro in io_mapping_map_atomic_wc()
Date
Use PHYS_PFN() macro in io_mapping_map_atomic_wc() instead of
open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
include/linux/io-mapping.h | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index 6e125e9b4187..837058bc1c9f 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -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
--
2.24.0
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