carma-fpga: switch to simple_read_from_buffer()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 7 deletions

diff --git a/drivers/misc/carma/carma-fpga-program.c b/drivers/misc/carma/carma-fpga-program.c
index f390deeae3cf..7e97e53f9ff2 100644
--- a/drivers/misc/carma/carma-fpga-program.c
+++ b/drivers/misc/carma/carma-fpga-program.c
@@ -749,13 +749,8 @@ static ssize_t fpga_read(struct file *filp, char __user *buf, size_t count,
                          loff_t *f_pos)
 {
         struct fpga_dev *priv = filp->private_data;
-
-        count = min_t(size_t, priv->bytes - *f_pos, count);
-        if (copy_to_user(buf, priv->vb.vaddr + *f_pos, count))
-                return -EFAULT;
-
-        *f_pos += count;
-        return count;
+        return simple_read_from_buffer(buf, count, ppos,
+                                       priv->vb.vaddr, priv->bytes);
 }
 
 static loff_t fpga_llseek(struct file *filp, loff_t offset, int origin)