mfd: fix ab3100 warning on x86_64

The file_operations write prototype should return a ssize_t.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 13e7d7bfe85f..8ff10cb77cac 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -465,14 +465,14 @@ static int ab3100_get_set_reg_open_file(struct inode *inode, struct file *file)
         return 0;
 }
 
-static int ab3100_get_set_reg(struct file *file,
-                              const char __user *user_buf,
-                              size_t count, loff_t *ppos)
+static ssize_t ab3100_get_set_reg(struct file *file,
+                                  const char __user *user_buf,
+                                  size_t count, loff_t *ppos)
 {
         struct ab3100_get_set_reg_priv *priv = file->private_data;
         struct ab3100 *ab3100 = priv->ab3100;
         char buf[32];
-        int buf_size;
+        ssize_t buf_size;
         int regp;
         unsigned long user_reg;
         int err;