* Subject: [v3.8 Regression] UHCI: OHCI: implement new semantics for URB_ISO_ASAP
@ 2013-06-24 16:35 Joseph Salisbury
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From: Joseph Salisbury @ 2013-06-24 16:35 UTC (permalink / raw)
To: Alan Stern; +Cc: Greg KH, USB list, linux-kernel
Hi Alan,
A bug was opened against the Ubuntu distro[0]. It is believed that the
following commits introduced the regression:
commit c44b225077bb1fb25ed5cd5c4f226897b91bedd4
Author: Alan Stern <stern@rowland.harvard.edu>
Date: Mon Oct 1 10:32:09 2012 -0400
UHCI: implement new semantics for URB_ISO_ASAP
commit 6a41b4d3fe8cd4cc95181516fc6fba7b1747a27c
Author: Alan Stern <stern@rowland.harvard.edu>
Date: Mon Oct 1 10:32:15 2012 -0400
OHCI: implement new semantics for URB_ISO_ASAP
The regression was introduced as of v3.8-rc1.
I see the following commit was created to address a similar issue to this:
commit e1944017839d7dfbf7329fac4bdec8b4050edf5e
Author: Alan Stern <stern@rowland.harvard.edu>
Date: Tue May 14 13:57:19 2013 -0400
USB: fix latency in uhci-hcd and ohci-hcd
I created a test kernel with commit
e1944017839d7dfbf7329fac4bdec8b4050edf5e. However, folks affected state
this bug still exists with commit e194401. It is also reported that
this bug exists in the latest Mainline kernel.
I see that you are the author of these patches, so I wanted to get your
opinion on the issue.
Thanks,
Joe
[0] http://pad.lv/1191603
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2013-06-24 16:35 Subject: [v3.8 Regression] UHCI: OHCI: implement new semantics for URB_ISO_ASAP Joseph Salisbury
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