Make sure to fail properly if the device is not accepted during attach
in order to avoid null-pointer derefs (of missing interface private
data) at disconnect or release.

Cc: [email protected]
Signed-off-by: Johan Hovold <[email protected]>
---
 drivers/usb/serial/keyspan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 5a97972..58c17fd 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -2303,7 +2303,7 @@ static int keyspan_startup(struct usb_serial *serial)
        if (d_details == NULL) {
                dev_err(&serial->dev->dev, "%s - unknown product id %x\n",
                    __func__, le16_to_cpu(serial->dev->descriptor.idProduct));
-               return 1;
+               return -ENODEV;
        }
 
        /* Setup private data for serial driver */
-- 
1.8.3.2

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