net: cdc_ncm: return proper error if setup fails
authorBjørn Mork <bjorn@mork.no>
Fri, 1 Nov 2013 10:16:59 +0000 (11:16 +0100)
committerDavid S. Miller <davem@davemloft.net>
Sat, 2 Nov 2013 06:02:04 +0000 (02:02 -0400)
Most setup errors are ignored to ensure maximum firmware
compatibilty.  But GET_NTB_PARAMETERS and the functional
descriptors are required.  Use proper error codes and
log level if these fail.

Cc: Alexey Orishko <alexey.orishko@gmail.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/usb/cdc_ncm.c

index 62dcb2e11e0b9d0c3ade16488ab5d5fde067bd44..f168bc8c1d388e72801b8da6b0a17b2a3b9bcef0 100644 (file)
@@ -86,8 +86,8 @@ static u8 cdc_ncm_setup(struct usbnet *dev)
                              0, iface_no, &ncm_parm,
                              sizeof(ncm_parm));
        if (err < 0) {
-               dev_dbg(&dev->intf->dev, "failed GET_NTB_PARAMETERS\n");
-               return 1;
+               dev_err(&dev->intf->dev, "failed GET_NTB_PARAMETERS\n");
+               return err; /* GET_NTB_PARAMETERS is required */
        }
 
        /* read correct set of parameters according to device mode */