[PATCH] USB speedtouch: be firm when disconnected

Just say -ENODEV

diff --git a/drivers/usb/misc/speedtouch.c b/drivers/usb/misc/speedtouch.c
index e902493bb5ea65fb3ac34c06277caaa118ceed19..856fd26daeae2a90984482124d15d0405f8384ca 100644 (file)
--- a/drivers/usb/misc/speedtouch.c
+++ b/drivers/usb/misc/speedtouch.c
@@ -648,9 +648,9 @@ static int udsl_atm_send (struct atm_vcc *vcc, struct sk_buff *skb)
 
        dbg ("udsl_atm_send called (skb 0x%p, len %u)", skb, skb->len);
 
-       if (!instance) {
-               dbg ("NULL instance!");
-               return -EINVAL;
+       if (!instance || !instance->usb_dev) {
+               dbg ("NULL data!");
+               return -ENODEV;
        }
 
        if (!instance->firmware_loaded)
@@ -701,6 +701,7 @@ static void udsl_atm_dev_close (struct atm_dev *dev)
        tasklet_kill (&instance->send_tasklet);
        dbg ("udsl_atm_dev_close: freeing instance");
        kfree (instance);
+       dev->dev_data = NULL;
 }
 
 
@@ -776,8 +777,8 @@ static int udsl_atm_open (struct atm_vcc *vcc, short vpi, int vci)
 
        dbg ("udsl_atm_open called");
 
-       if (!instance) {
-               dbg ("NULL instance!");
+       if (!instance || !instance->usb_dev) {
+               dbg ("NULL data!");
                return -ENODEV;
        }