staging: vme_user: refactor llseek to switch(){}

This makes vme_user_llseek ignore all minors that don't have llseek
implementation.
Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Cc: Igor Alekseev <igor.alekseev@itep.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vme/devices/vme_user.c

@@ -430,15 +430,17 @@ static loff_t vme_user_llseek(struct file *file, loff_t off, int whence)
 	size_t image_size;
 	loff_t res;
 
-	if (minor == CONTROL_MINOR)
-		return -EINVAL;
-
+	switch (type[minor]) {
+	case MASTER_MINOR:
+	case SLAVE_MINOR:
 		mutex_lock(&image[minor].mutex);
 		image_size = vme_get_size(image[minor].resource);
 		res = fixed_size_llseek(file, off, whence, image_size);
 		mutex_unlock(&image[minor].mutex);
-
 		return res;
+	}
+
+	return -EINVAL;
 }
 
 /*