1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/serial/mfd.c b/drivers/serial/mfd.c
index bc9af503907f..6703f3e802a2 100644
--- a/drivers/serial/mfd.c
+++ b/drivers/serial/mfd.c
@@ -227,12 +227,14 @@ static const struct file_operations port_regs_ops = {
         .owner          = THIS_MODULE,
         .open           = hsu_show_regs_open,
         .read           = port_show_regs,
+        .llseek         = default_llseek,
 };
 
 static const struct file_operations dma_regs_ops = {
         .owner          = THIS_MODULE,
         .open           = hsu_show_regs_open,
         .read           = dma_show_regs,
+        .llseek         = default_llseek,
 };
 
 static int hsu_debugfs_init(struct hsu_port *hsu)