From: David Brownell <david-b@pacbell.net>
To: linux-hotplug@vger.kernel.org
Subject: Re: PRODUCT code has a float in it rather than an int
Date: Thu, 29 Mar 2001 19:37:37 +0000 [thread overview]
Message-ID: <marc-linux-hotplug-98589490124878@msgid-missing> (raw)
In-Reply-To: <marc-linux-hotplug-98588577527574@msgid-missing>
Consult the USB (2.0) spec in case of confusion,
but you're basically correct.
Range is 00.00 to 99.99, which in hex is 0000 to 9999 ...
- Dave
----- Original Message -----
From: "Ben Woodard" <ben@valinux.com>
To: "David Brownell" <david-b@pacbell.net>
Cc: <linux-hotplug-devel@lists.sourceforge.net>; <ps-hp@lists.valinux.com>; <jerdfelt@valinux.com>
Sent: Thursday, March 29, 2001 9:31 AM
Subject: Re: PRODUCT code has a float in it rather than an int
> > It's a bug in 2.2.18 ... a 2.4 fix wasn't backported.
> >
> > "bcdDevice" is binary coded decimal, fixed point.
> > It's presented as integer to simplify things.
> >
> > One fix would be to have the hotplug scripts
> > see they've got that bug, and work around it.
> > (Until 2.2.* syncs that with 2.4!)
>
> I can do this. I'll contribute a patch. Just let me make sure that I'm
> sure I understand what you mean by a bcd.
> decimal binary hex
> 0.00 0000 0000 0000 0000 0x0000
> 1.00 0000 0001 0000 0000 0x0100
> 7.45 0000 0111 0010 0101 0x0745
> 11.93 0001 0001 1001 0011 0x1193
>
> is that pretty much correct? If it is, let me know and I will code it up.
>
> -ben
>
>
> >
> > - Dave
> >
> > ----- Original Message -----
> > From: "Ben Woodard" <ben@valinux.com>
> > To: <linux-hotplug-devel@lists.sourceforge.net>
> > Cc: <ps-hp@valinux.com>; <jerdfelt@valinux.com>
> > Sent: Thursday, March 29, 2001 8:43 AM
> > Subject: PRODUCT code has a float in it rather than an int
> >
> >
> > > I'm running 2.2.18 with modultils 2.4.5 and it appears that the
> > > PRODUCT is coming back as a float rather than as an int. This is
> > > consistant with what I see in /proc/usb/devices:
> > >
> > > ben@trill:/etc/hotplug$ grep ^P /proc/bus/usb/devices
> > > P: Vendor\000 ProdID\000 Rev= 0.00
> > > P: Vendor\x03f0 ProdID\x1004 Rev= 1.00
> > >
> > > This causes some problems in the usb.agent script becase usb_bcdDevice
> > > is declared -i?
> > >
> > > This leads me to believe that that usb_bcdDevice should not be
> > > declared -i or it should be multiplied out so that it is an integer.
> > >
> > > What do you guys think? I'm happy to try to code up the changes but
> > > I'd like to know which direction I should take it.
> > >
> > > -ben
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net
> > > Linux-hotplug-devel@lists.sourceforge.net
> > > http://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel
> >
>
>
> _______________________________________________
> Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net
> Linux-hotplug-devel@lists.sourceforge.net
> http://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel
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prev parent reply other threads:[~2001-03-29 19:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-29 16:43 PRODUCT code has a float in it rather than an int Ben Woodard
2001-03-29 17:13 ` David Brownell
2001-03-29 17:31 ` Ben Woodard
2001-03-29 19:37 ` David Brownell [this message]
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