1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 54a4de0efdba..f61477bed3a8 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -1077,7 +1077,9 @@ static int cp210x_tiocmget(struct tty_struct *tty)
         u8 control;
         int result;
 
-        cp210x_read_u8_reg(port, CP210X_GET_MDMSTS, &control);
+        result = cp210x_read_u8_reg(port, CP210X_GET_MDMSTS, &control);
+        if (result)
+                return result;
 
         result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0)
                 |((control & CONTROL_RTS) ? TIOCM_RTS : 0)