carma-fpga: switch to simple_read_from_buffer()

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

diff --git a/drivers/misc/carma/carma-fpga-program.c b/drivers/misc/carma/carma-fpga-program.c
index f390deeae3cf7825e485dd12526d6328a317b656..7e97e53f9ff2474fd1741b911c43a277d8408ea2 100644 (file)
--- 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)