USB: option: Add USB ID for Novatel MC727/U727/USB727 refresh

[platform/kernel/linux-starfive.git] / drivers / usb / serial / ti_usb_3410_5052.c

diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 14971a9..3bc609f 100644 (file)
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -727,7 +727,7 @@ static int ti_write_room(struct tty_struct *tty)
        dbg("%s - port %d", __func__, port->number);
 
        if (tport == NULL)
-               return -ENODEV;
+               return 0;
 
        spin_lock_irqsave(&tport->tp_lock, flags);
        room = ti_buf_space_avail(tport->tp_write_buf);
@@ -748,7 +748,7 @@ static int ti_chars_in_buffer(struct tty_struct *tty)
        dbg("%s - port %d", __func__, port->number);
 
        if (tport == NULL)
-               return -ENODEV;
+               return 0;
 
        spin_lock_irqsave(&tport->tp_lock, flags);
        chars = ti_buf_data_avail(tport->tp_write_buf);