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On Fri, 30 Aug 2013, Jürgen Liebmann wrote:
> When the commit that causes the problem increases the time between the two
> request,
> maybe that's just this is the cause of the problem?
> Can you decrease this time again?
You can try the patch below. Apply it to the 74a6af256648 kernel; it
will reverse the timing effect of that commit.
> I can't believe that this is a hardware problem, because all older kernels
> performs fine and all newer not!
If it isn't a hardware problem, why does the camera work okay after you
initialize it in a virtual machine?
Alan Stern
Index: 3.10/drivers/usb/host/ehci-q.c
===================================================================
--- 3.10.orig/drivers/usb/host/ehci-q.c
+++ 3.10/drivers/usb/host/ehci-q.c
@@ -1170,7 +1170,7 @@ static void single_unlink_async(struct e
struct ehci_qh *prev;
/* Add to the end of the list of QHs waiting for the next IAAD */
- qh->qh_state = QH_STATE_UNLINK_WAIT;
+ qh->qh_state = QH_STATE_UNLINK;
if (ehci->async_unlink)
ehci->async_unlink_last->unlink_next = qh;
else
--
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