[PATCH AUTOSEL 5.4 032/330] dax: Fix alloc_dax_region() compile warning

Sasha Levin
2020-09-18T02:01:58Z

From: Dan Williams <dan.j.williams@intel.com>

[ Upstream commit 460370ab20b6cc174256e46e192adf01e730faf6 ]

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))

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 8fafbeab510a8..eccdda1f7b71b 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 8619e32999436..9e4eba67e8b98 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 6ccca3b890d6f..3107ce80e8090 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;
};

/**
--
2.25.1