Date: Fri, 29 Oct 2004 14:29:32 -0400 From: Mike Tancsa <mike@sentex.net> To: Michael Nottebrock <michaelnottebrock@gmx.net> Cc: freebsd-current@freebsd.org Subject: Re: EHCI considered harmful? Message-ID: <6.1.2.0.0.20041029141407.06fc82d8@64.7.153.2> In-Reply-To: <200410292002.52978.michaelnottebrock@gmx.net> References: <20041029075930.GG701@marvin.riggiland.au> <200410291930.30626.michaelnottebrock@gmx.net> <6.1.2.0.0.20041029134511.04ff09a8@64.7.153.2> <200410292002.52978.michaelnottebrock@gmx.net>
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At 02:02 PM 29/10/2004, Michael Nottebrock wrote:
>On Friday, 29. October 2004 19:47, Mike Tancsa wrote:
> > At 01:30 PM 29/10/2004, Michael Nottebrock wrote:
> > > > On my Intel 865 box, its pretty easy for me to lock the system up with
> > > > 2 different types of USB key drives (Lexar and SANDISK). The system
> > > > also sporadically locks up at boot time, if I have a Keyspan USB-Serial
> > > > device plugged in using EHCI. For new users, I think its more
> > > > important that the system works.
> > >
> > >There are similar issues all over USB in FreeBSD, that's not a good
> > > rationale to leave ehci out of GENERIC.
> >
> > With the base USB ? Regular USB works just fine for me on the same
> > hardware.
>
>USB 2.0 is hardly off-base or irregular. Just the fact that you're making
>this
>distinction tells me that ehci support on FreeBSD is getting not enough
>exposure. I'm afraid if it'll remain hidden like it is now, it'll never get
>into any decent shape.
I dont think breaking people's working setup will all of a sudden get
someone to maintain it. The man page itself states,
BUGS
The driver is not finished and is quite buggy.
With EHCI in the kernel, my machine is unusuable. With 1.x yes, there are
certainly bugs that I run into (e.g. KERN/72935) but most do not seem to
prevent the box from just booting.
> > Can you quantify what you mean by similar ?
>
>There is one rather recent PR about a crash with a 1.1 device (PR 63621),
But thats from march 2004 and on RELENG_4. My 2 USB key drives work on
RELENG_5, but not RELENG_4. Perhaps the issues in PR63621 are not there in
RELENG_5...
>a
>"Detaching USB stick crashes BETA4/BETA5" thread about one month ago and
>searching -CURRENT for mails with "usb" subject lines turns up an awful lot
>of issues, bugs, hangs, crashes, you name it, pretty much all of them on 1.1
>hardware.
I think EHCI would only make it worse. The same 1.1 bugs would be there
that you mention, and then the ones added by EHCI. i.e. it doesnt take any
1.1 bugs away, just adds more.
---Mike
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