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nvdimm: use 'u64' for pfn flags

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A recent bugfix changed pfn_t to always be 64-bit wide, but did not
change the code in pmem.c, which is now broken on 32-bit architectures
as reported by gcc:

In file included from ../drivers/nvdimm/pmem.c:28:0:
drivers/nvdimm/pmem.c: In function 'pmem_alloc':
include/linux/pfn_t.h:15:17: error: large integer implicitly truncated to unsigned type [-Werror=overflow]
 #define PFN_DEV (1ULL << (BITS_PER_LONG_LONG - 3))

This changes the intermediate pfn_flags in struct pmem_device to
be 64 bit wide as well, so they can store the flags correctly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: db78c22230 ("mm: fix pfn_t vs highmem")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Arnd Bergmann 2016-02-22 22:58:34 +01:00 committed by Dan Williams
parent 93f834df9c
commit c45442055d
1 changed files with 1 additions and 1 deletions
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2
drivers/nvdimm/pmem.c
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@ -41,7 +41,7 @@ struct pmem_device {
phys_addr_t phys_addr;
/* when non-zero this device is hosting a 'pfn' instance */
phys_addr_t data_offset;
unsigned long pfn_flags;
u64 pfn_flags;
void __pmem *virt_addr;
size_t size;
struct badblocks bb;