On Tue, 6 Sep 2005, Franck wrote:
> Alan,
>
> 2005/9/5, Alan Stern <[EMAIL PROTECTED]>:
> > > > On the third hand, who would ever make an embedded hub with only one,
> > > > fixed downstream port? Why not leave out the hub and attach the
> > > > upstream
> > > > port directly to the downstream
Alan,
2005/9/5, Alan Stern <[EMAIL PROTECTED]>:
> > > On the third hand, who would ever make an embedded hub with only one,
> > > fixed downstream port? Why not leave out the hub and attach the upstream
> > > port directly to the downstream device?
> > >
> >
> > surely because the downstream devi
On Tue, 6 Sep 2005, Franck wrote:
> > > Can you point out in the code where is the setup of 4 times per second
> > > interval ? I can't find it.
> >
> > It's in drivers/usb/core/hub.c. The URB is set up near the end of
> > hub_configure(), and it is submitted in hub_activate(). Search for
> > o
2005/9/6, Alan Stern <[EMAIL PROTECTED]>:
> On Mon, 5 Sep 2005, Franck wrote:
>
> > Alan,
> >
> > 2005/9/5, Alan Stern <[EMAIL PROTECTED]>:
> > > On Mon, 5 Sep 2005, Franck wrote:
> > >
> > > > > On the other hand, it's not really all that much useless work. 4
> > > > > times
> > > > > per secon
On Mon, 5 Sep 2005, Franck wrote:
> Alan,
>
> 2005/9/5, Alan Stern <[EMAIL PROTECTED]>:
> > On Mon, 5 Sep 2005, Franck wrote:
> >
> > > > On the other hand, it's not really all that much useless work. 4 times
> > > > per second or so there's a single, very short transaction (IN followed
> > >
On Mon, 5 Sep 2005, Franck wrote:
> 2005/9/1, Alan Stern <[EMAIL PROTECTED]>:
> > On Thu, 1 Sep 2005, Franck wrote:
> >
> > Sure. All the information in the hub descriptor is available, including
> > the number of ports and whether they are fixed or removable.
> >
>
> BTW, I looked at sl811
Alan,
2005/9/5, Alan Stern <[EMAIL PROTECTED]>:
> On Mon, 5 Sep 2005, Franck wrote:
>
> > > On the other hand, it's not really all that much useless work. 4 times
> > > per second or so there's a single, very short transaction (IN followed by
> > > NAK). Unless you've got some good reason for a
On Mon, 5 Sep 2005, Franck wrote:
> > On the other hand, it's not really all that much useless work. 4 times
> > per second or so there's a single, very short transaction (IN followed by
> > NAK). Unless you've got some good reason for avoiding it, why bother?
> >
>
> Well, if work can be avoi
2005/9/1, Alan Stern <[EMAIL PROTECTED]>:
> On Thu, 1 Sep 2005, Franck wrote:
>
> Sure. All the information in the hub descriptor is available, including
> the number of ports and whether they are fixed or removable.
>
BTW, I looked at sl811 host driver and it seems to me that the root
hub desc
On Thu, 1 Sep 2005, Alan Stern wrote:
> On the third hand, who would ever make an embedded hub with only one,
> fixed downstream port? Why not leave out the hub and attach the upstream
> port directly to the downstream device?
Power Quotient International Co., Ltd has. I have here a
flash d
On Thu, 1 Sep 2005, Franck wrote:
> Hi,
>
> Is it really needed to poll an embedded hub that has only one
> downstream port on which a device is plugged forever ?
It depends. If the device can be suspended and is a wakeup source then
the polling is needed, at least whenever the device is suspe
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