USB: serial: mct_u232: fix modem-status error handling

[pandora-kernel.git] / drivers / usb / serial / mct_u232.c

diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index a7e7ba6..801c697 100644 (file)
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -385,9 +385,13 @@ static int mct_u232_get_modem_stat(struct usb_serial *serial,
                        MCT_U232_GET_REQUEST_TYPE,
                        0, 0, buf, MCT_U232_GET_MODEM_STAT_SIZE,
                        WDR_TIMEOUT);
-       if (rc < 0) {
+       if (rc < MCT_U232_GET_MODEM_STAT_SIZE) {
                dev_err(&serial->dev->dev,
                        "Get MODEM STATus failed (error = %d)\n", rc);
+
+               if (rc >= 0)
+                       rc = -EIO;
+
                *msr = 0;
        } else {
                *msr = buf[0];