1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index 95d36bfb34bc..92bd0839d5b4 100644
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -48,7 +48,7 @@ struct ads7846_platform_data {
                                          * state if get_pendown_state == NULL
                                          */
         int     (*get_pendown_state)(void);
-        int     (*filter_init)  (struct ads7846_platform_data *pdata,
+        int     (*filter_init)  (const struct ads7846_platform_data *pdata,
                                  void **filter_data);
         int     (*filter)       (void *filter_data, int data_idx, int *val);
         void    (*filter_cleanup)(void *filter_data);