Control transfers have both IN and OUT (or SETUP) packets, so when
clearing TT buffers for a control transfer it's necessary to send
two HUB_CLEAR_TT_BUFFER requests to the hub.
Signed-off-by: William Gulland
---
drivers/usb/core/hub.c | 9 +
1 file changed, 9 insertions(+)
Hello.
On 28-06-2013 3:10, William Gulland wrote:
Control transfers have both IN and OUT (or SETUP) packets, so when
clearing TT buffers for a control transfer it's necessary to send
two HUB_CLEAR_TT_BUFFER requests to the hub.
Signed-off-by: William Gulland
---
drivers/usb
On Thu, 27 Jun 2013, William Gulland wrote:
> Control transfers have both IN and OUT (or SETUP) packets, so when
> clearing TT buffers for a control transfer it's necessary to send
> two HUB_CLEAR_TT_BUFFER requests to the hub.
What makes you think this is necessary? Have you found a
Please use Reply-To-All so that your response gets sent to the mailing
list as well as to me. And please don't top-post.
On Fri, 28 Jun 2013, William Gulland wrote:
> Yes, two ClearTTBuffer requests seem to be necessary with Intel's CaveCreek
> integrated rate-matching hub - I've got it into th
From: William Gulland
Date: Fri, Jun 28, 2013 at 3:13 PM
Subject: Re: [PATCH] usb: Clear both buffers when clearing a control
transfer TT buffer.
To: Alan Stern
Cc: Sarah Sharp , USB list
On Fri, Jun 28, 2013 at 12:24 PM, Alan Stern wrote:
>
> Please use Reply-To-All so that your re
On Fri, Jun 28, 2013 at 03:24:49PM -0400, Alan Stern wrote:
> Please use Reply-To-All so that your response gets sent to the mailing
> list as well as to me. And please don't top-post.
>
> On Fri, 28 Jun 2013, William Gulland wrote:
>
> > Yes, two ClearTTBuffer requests seem to be necessary wit
On Fri, Jun 28, 2013 at 04:17:44PM -0700, Sarah Sharp wrote:
> On Fri, Jun 28, 2013 at 03:24:49PM -0400, Alan Stern wrote:
> > Please use Reply-To-All so that your response gets sent to the mailing
> > list as well as to me. And please don't top-post.
> >
> > On Fri, 28 Jun 2013, William Gulland
On Fri, 28 Jun 2013, Greg KH wrote:
> On Fri, Jun 28, 2013 at 04:17:44PM -0700, Sarah Sharp wrote:
> > On Fri, Jun 28, 2013 at 03:24:49PM -0400, Alan Stern wrote:
> > > Please use Reply-To-All so that your response gets sent to the mailing
> > > list as well as to me. And please don't top-post.
On Fri, 28 Jun 2013, Sarah Sharp wrote:
> > This sounds like a bug in the Intel hub hardware, or at least,
> > unintentional behavior.
> >
> > Sarah, is this the sort of thing the Intel engineers would want to know
> > about?
>
> I will send them a report. However, if this was found on produc
On Thu, 27 Jun 2013, William Gulland wrote:
> Control transfers have both IN and OUT (or SETUP) packets, so when
> clearing TT buffers for a control transfer it's necessary to send
> two HUB_CLEAR_TT_BUFFER requests to the hub.
>
> Signed-off-by: William Gulland
> ---
> drivers/usb/
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