diff options
| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-01-30 22:17:32 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-31 10:30:41 -0800 |
| commit | 2b755626cad6d9dcbad09d022ba7bdfc39ed773d (patch) | |
| tree | 4945297d1f62e72394898c96415d4f72ea8755cc /include/linux/io-mapping.h | |
| parent | execve: warn if process starts with executable stack (diff) | |
| download | wireguard-linux-2b755626cad6d9dcbad09d022ba7bdfc39ed773d.tar.xz wireguard-linux-2b755626cad6d9dcbad09d022ba7bdfc39ed773d.zip | |
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>
Diffstat (limited to 'include/linux/io-mapping.h')
| -rw-r--r-- | include/linux/io-mapping.h | 5 |
1 files 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 |