1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mfd/aat2870-core.c b/drivers/mfd/aat2870-core.c
index 345dc658ef06..02c42015ba51 100644
--- a/drivers/mfd/aat2870-core.c
+++ b/drivers/mfd/aat2870-core.c
@@ -295,7 +295,7 @@ static ssize_t aat2870_reg_write_file(struct file *file,
 {
         struct aat2870_data *aat2870 = file->private_data;
         char buf[32];
-        int buf_size;
+        ssize_t buf_size;
         char *start = buf;
         unsigned long addr, val;
         int ret;