1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index 154d959e8993..74ba8b1d71d8 100644
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -204,8 +204,9 @@ static ssize_t gpio_mockup_debugfs_read(struct file *file,
         struct gpio_mockup_chip *chip;
         struct seq_file *sfile;
         struct gpio_chip *gc;
+        int val, rv, cnt;
         char buf[3];
-        int val, rv;
+
 
         if (*ppos != 0)
                 return 0;
@@ -216,13 +217,14 @@ static ssize_t gpio_mockup_debugfs_read(struct file *file,
         gc = &chip->gc;
 
         val = gpio_mockup_get(gc, priv->offset);
-        snprintf(buf, sizeof(buf), "%d\n", val);
+        cnt = snprintf(buf, sizeof(buf), "%d\n", val);
 
-        rv = copy_to_user(usr_buf, buf, sizeof(buf));
+        rv = copy_to_user(usr_buf, buf, cnt);
         if (rv)
                 return rv;
 
-        return sizeof(buf) - 1;
+        *ppos += cnt;
+        return cnt;
 }
 
 static ssize_t gpio_mockup_debugfs_write(struct file *file,