The ioreadX() helpers have inconsistent interface. On some architectures
void *__iomem address argument is a pointer to const, on some not.
Implementations of ioreadX() do not modify the memory under the address
so they can be converted to a "const" version for const-safety and
consistency among architectures.
Signed-off-by: Krzysztof Kozlowski <k...@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+rene...@glider.be>
Acked-by: Dave Jiang <dave.ji...@intel.com>
---
drivers/ntb/hw/intel/ntb_hw_gen1.c | 2 +-
drivers/ntb/hw/intel/ntb_hw_gen3.h | 2 +-
drivers/ntb/hw/intel/ntb_hw_intel.h | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/ntb/hw/intel/ntb_hw_gen1.c
b/drivers/ntb/hw/intel/ntb_hw_gen1.c
index 423f9b8fbbcf..3185efeab487 100644
--- a/drivers/ntb/hw/intel/ntb_hw_gen1.c
+++ b/drivers/ntb/hw/intel/ntb_hw_gen1.c
@@ -1205,7 +1205,7 @@ int intel_ntb_peer_spad_write(struct ntb_dev *ntb, int
pidx, int sidx,
ndev->peer_reg->spad);
}
-static u64 xeon_db_ioread(void __iomem *mmio)
+static u64 xeon_db_ioread(const void __iomem *mmio)
{
return (u64)ioread16(mmio);
}
diff --git a/drivers/ntb/hw/intel/ntb_hw_gen3.h
b/drivers/ntb/hw/intel/ntb_hw_gen3.h
index 2bc5d8356045..dea93989942d 100644
--- a/drivers/ntb/hw/intel/ntb_hw_gen3.h
+++ b/drivers/ntb/hw/intel/ntb_hw_gen3.h
@@ -91,7 +91,7 @@
#define GEN3_DB_TOTAL_SHIFT 33
#define GEN3_SPAD_COUNT 16
-static inline u64 gen3_db_ioread(void __iomem *mmio)
+static inline u64 gen3_db_ioread(const void __iomem *mmio)
{
return ioread64(mmio);
}
diff --git a/drivers/ntb/hw/intel/ntb_hw_intel.h
b/drivers/ntb/hw/intel/ntb_hw_intel.h
index d61fcd91714b..05e2335c9596 100644
--- a/drivers/ntb/hw/intel/ntb_hw_intel.h
+++ b/drivers/ntb/hw/intel/ntb_hw_intel.h
@@ -103,7 +103,7 @@ struct intel_ntb_dev;
struct intel_ntb_reg {
int (*poll_link)(struct intel_ntb_dev *ndev);
int (*link_is_up)(struct intel_ntb_dev *ndev);
- u64 (*db_ioread)(void __iomem *mmio);
+ u64 (*db_ioread)(const void __iomem *mmio);
void (*db_iowrite)(u64 db_bits, void __iomem *mmio);
unsigned long ntb_ctl;
resource_size_t db_size;
--
2.17.1
