Merge tag 'driver-core-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / drivers / usb / serial / cp210x.c

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 54a4de0..f61477b 100644 (file)
--- 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)