[PATCH v7 09/12] dax: Fix alloc_dax_region() compile warning

Dan Williams
2019-10-16T01:14:35Z

PFN flags are (unsigned long long), fix the alloc_dax_region() calling
convention to fix warnings of the form:

>> include/linux/pfn_t.h:18:17: warning: large integer implicitly truncated to unsigned type [-Woverflow]
#define PFN_DEV (1ULL << (BITS_PER_LONG_LONG - 3))

Cc: Vishal Verma <vishal.l.verma@intel.com>
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/dax/bus.c | 2 +-
drivers/dax/bus.h | 2 +-
drivers/dax/dax-private.h | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
index 8fafbeab510a..eccdda1f7b71 100644
--- a/drivers/dax/bus.c
+++ b/drivers/dax/bus.c
@@ -227,7 +227,7 @@ static void dax_region_unregister(void *region)

struct dax_region *alloc_dax_region(struct device *parent, int region_id,
struct resource *res, int target_node, unsigned int align,
- unsigned long pfn_flags)
+ unsigned long long pfn_flags)
{
struct dax_region *dax_region;

diff --git a/drivers/dax/bus.h b/drivers/dax/bus.h
index 8619e3299943..9e4eba67e8b9 100644
--- a/drivers/dax/bus.h
+++ b/drivers/dax/bus.h
@@ -11,7 +11,7 @@ struct dax_region;
void dax_region_put(struct dax_region *dax_region);
struct dax_region *alloc_dax_region(struct device *parent, int region_id,
struct resource *res, int target_node, unsigned int align,
- unsigned long flags);
+ unsigned long long flags);

enum dev_dax_subsys {
DEV_DAX_BUS,
diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h
index 6ccca3b890d6..3107ce80e809 100644
--- a/drivers/dax/dax-private.h
+++ b/drivers/dax/dax-private.h
@@ -32,7 +32,7 @@ struct dax_region {
struct device *dev;
unsigned int align;
struct resource res;
- unsigned long pfn_flags;
+ unsigned long long pfn_flags;
};

/**