mfd: Constify WM8994 write path

Allow const buffers to be passed in without type safety issues.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h
index cb7d3ae7da8f..f0b69cdae41c 100644
--- a/include/linux/mfd/wm8994/core.h
+++ b/include/linux/mfd/wm8994/core.h
@@ -59,7 +59,7 @@ struct wm8994 {
         int (*read_dev)(struct wm8994 *wm8994, unsigned short reg,
                         int bytes, void *dest);
         int (*write_dev)(struct wm8994 *wm8994, unsigned short reg,
-                         int bytes, void *src);
+                         int bytes, const void *src);
 
         void *control_data;
 
@@ -89,7 +89,7 @@ int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
 int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
                      int count, u16 *buf);
 int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
-                     int count, u16 *buf);
+                     int count, const u16 *buf);
 
 
 /* Helper to save on boilerplate */