On Tue, Sep 03, 2013 at 09:52:52AM +0800, Huang Rui wrote:
> On Tue, Sep 03, 2013 at 02:14:14AM +0800, Giovanni wrote:
> > > On Sat, Aug 31, 2013 at 12:11:49AM
> > > +0800, Giovanni wrote:
> > > >
> > >
> > > I drafted a patch, please have a test and enable
> > > CONFIG_XHCI_HCD_DEBUGGING in kernel configuration at same
> > > time.
> > >
> > > 8<---------------------- cut here
> > >----------------------------
> > >
> > >
> > >Thanks,
> > >Rui
> >
> > I tried your patch. This is new log after kernel panic:
> > https://bugzilla.kernel.org/attachment.cgi?id=107386
> > I have enabled CONFIG_USB_XHCI_HCD_DEBUGGING, but I can't see none debug
> > message for XHCI.
> > I have /proc/sys/kernel/printk to 7. I do something wrong?
> >
>
> Sorry, I fogot to tell you CONFIG_USB_DEBUG also need to be enabled.
> Could you rebuild again?
>
Please apply this patch based my last patch, and have a test again.
8<-------------------------- cut here ----------------------------
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index f2e57a1..61a9532 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -493,6 +493,9 @@ struct xhci_ring *xhci_stream_id_to_ring(
{
struct xhci_virt_ep *ep = &dev->eps[ep_index];
+ if (!ep)
+ return NULL;
+
if (stream_id == 0)
return ep->ring;
if (!ep->stream_info)
---
Thanks,
Rui
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