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>

diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 13e7d7b..8ff10cb 100644 (file)
--- 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;