> The instrumentation patch:
Please test this patch.
Regards
Oliver
--
commit 48b7a75466ec184adde7ff58ea3d991cd1c1e8c8
Author: Oliver Neukum <oliver@xxxxxxxxxx>
Date: Mon Aug 3 22:50:46 2009 +0200
usb: cdc-acm: catch usb_enable_endpoint nulling the array of endpoints
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index e1f8941..d9508e9 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -465,6 +465,14 @@ urbs:
ep = (usb_pipein(acm->rx_endpoint) ? acm->dev->ep_in : acm->dev->ep_out)
[usb_pipeendpoint(acm->rx_endpoint)];
+ if (!ep) { /* disconnected ? */
+ usb_free_urb(rcv->urb);
+ spin_lock_irqsave(&acm->read_lock, flags);
+ list_add(&buf->list, &acm->spare_read_bufs);
+ acm->processing = 0;
+ spin_unlock_irqrestore(&acm->read_lock, flags);
+ return;
+ }
if (usb_endpoint_xfer_int(&ep->desc))
usb_fill_int_urb(rcv->urb, acm->dev,
acm->rx_endpoint,
--
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