At 10:42 PM 7/16/2007, David Brownell wrote:
>On Monday 16 July 2007, Steve Calfee wrote:
> > I am working on a project using a generic (non-FPGA) cypress fx2 to
> > test host controllers.
> >
> > The good news is that Linux runs interrupt IN/OUTs at 3x1024 byte
>
my questions are has this been tested? Is it a problem with my
user mode program? Is my kernel too old? Should I keep looking for the cause?
Thanks, Steve
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th usb
1.0 and 2.0. If it did that it would show:
wMaxPacketSize 0x1400 3x 1024 bytes
Regards, Steve
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I think all three of those stores will have a powered usb 2.0 hub for $40 to
$50 bucks. Return it, if it doesn't fix your problem.
But hey, if you want a new mobo, go for it. It just sounds like one of those
jokes
t;CONFIG_USB_STORAGE_SDDR55=y
># CONFIG_USB_STORAGE_JUMPSHOT is not set
># CONFIG_USB_STORAGE_ALAUDA is not set
># CONFIG_USB_STORAGE_KARMA is not set
>
>Any other ideas other than lack of power? Its plugged into an Alps 7 port
>USB2.0 hub, which is itself powered from the USB c
-(which is 256, 512 or 1024 ms).
Regards, Steve
_
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set up
and ready to use.
Regards, Steve.
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inux is not a good solution for very low
latency requirements. I think a hardware redesign with intelligence
in the gadget to prevent disasters would be much more sane.
Regards, Steve
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stead of every 2 seconds.
It is not clear what use (in a non-real time OS), the frame count is in
userspace?
Regards, Steve
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Apparently my USB controller is flippin' out, and the driver is
throwing it out of the game. 3 strikes! It's outta here!
Please let me know what information I can provide that might be helpful.
I'm getting a lot of this in messages.log
Mar 31 15:06:34 tbone drivers/usb/class/usblp.c: usblp0:
Only if it gets a short packet. But what if the length is divisible by
maxpacketlen? The solution is to send a ZLP.
I don't write windows minidrivers but I know someone who does. There is some
kind of endpoint setup bit that sa
From: Alan Stern <[EMAIL PROTECTED]>
To: Steve Calfee <[EMAIL PROTECTED]>
CC: [email protected]
Subject: Re: [linux-usb-devel] Fwd: Re: linux as a hub?
Date: Mon, 11 Dec 2006 15:27:23 -0500 (EST)
On Mon, 11 Dec 2006, Steve Calfee wrote:
> >>Among o
am only goes up through the chain directly to the root -
what I mean is hubs don't echo downstream data that is going upstream. But
the upstream data is still sent at low speed, if that is what the device
sends.
A PRE pid is sent to tell full speed devices that a l
L1 cache and are dirty
(e.g. because they were recently used), I'm assuming cache is
write-back. You start DMA transfer and go on with some other tasks.
For some reason, those dirty lines are forced out of cache, e.g.
because L1 needs cache lines for some other data. During this write
back you o
try a vanilla kernel to rule out a Fedora
specific bug. But I can't do that until this weekend at the earliest
since the server is live during weekdays.
Is this the proper list for this problem?
Thanks for any assistance,
Steve Bergman
--
g able to change stuff at a 2ms boundary will trigger artifacts with the
samples too. To me 2ms seems awfully fast for required audio response. On
the other hand, if we are handling 44100 HZ playback we must be able to
handle urbs that are only 10ms long because that is the only way to get one
&
em. Congrats you found another problem device.
Regards, Steve
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tion as a full
speed device about 5% of the time. A bus reset would not recover the device.
A port power off then on would get it started again. I don't remember the
brand of that key, What is your key string descriptors, maybe I will
remember if that is the flaky device if I hav
f the time). HS is supposed
to fall back to FS for all usb 2.0 devices, but it does seem that
occasionally some devices are not 100% compliant :)
>>
>>The above experiments do not indicate hardware incompatibility. Do you
>>agree ?
>>
r, I've only located one: the Q-Stor
IrDA QIRU2, which appears as a Mobile Action MA-620, handled successfully
by the pl2303.c driver (well,it works at 9600 and 2400 baud; I haven't
gotten it to work at 19200).
Thanks,
steve
ing to the device,
which is exactly what happens when it finally starts the enumeration.
Every PC/BIOS/OS will probably have a slightly different sequence during its
boot up sequence. I would expect any one instance of PC/BIOS/OS to boot the
same though.
It is not clear to me why you think ther
d has a pullup resistor
on D+ (for full speed device), after the chirp. It looks like the device
thinks it is high speed, while the host is in full speed? The device is seen
originally or the host would not reset the bus. Then the host starts SOFs
and looks like it no longer sees the pullup and
otg devices to test the system withany
suggestions? Being able to buy "cheap" consumer hardware for testing
implementations is invaluable.
Regards, ~Steve
___
[email protected]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
my demo program below.
Thanks,
Paul Giblock
Hi, I have not seen any other replies. That usually means no one understands
your question.
Everything looks ok to me, but are you running as a low spe
>From Steve Ibeme
Attn; Good Friend
I'm happy to inform you about my success in getting those funds transffered
under the cooperation of a new partiner from paraguay.Presently i'm in
paraguay for investment projects with my own share of the total Contract sum.
Mean while,i didn&
A while back I had a similar requirement, and someone pointed me to
a hub-ctrl program that sends the proper commands to /proc to
turn power on individual hub ports on and off; see
http://www.gniibe.org/log/linux
As I was also told at the time:
1) Many hubs don't support this (the Atmel AT43312
cards in one PC. You may be right about the Gadget API.
Regards, Steve
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From: David Brownell <[EMAIL PROTECTED]>
To: [email protected]
CC: "Steve Calfee" <[EMAIL PROTECTED]>
Subject: Re: [linux-usb-devel] Re: Question about OTG operations
Date: Tue, 28 Feb 2006 23:42:35 -0800
On Tuesday 28 February 2006 11:03 pm, Steve Calfe
From: David Brownell <[EMAIL PROTECTED]>
To: "Steve Calfee" <[EMAIL PROTECTED]>
CC: [email protected]
Subject: Re: [linux-usb-devel] Re: Question about OTG operations
Date: Tue, 28 Feb 2006 22:46:42 -0800
On Tuesday 28 February 2006 10:20 pm, Steve C
From: Li Yang-r58472 <[EMAIL PROTECTED]>
To: Steve Calfee <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
CC: [email protected]
Subject: RE: [linux-usb-devel] Re: Question about OTG operations
Date: Wed, 1 Mar 2006 14:44:31 +0800
> -Original Message-
> From
if the A connector goes
into the "peripheral" and the b into the "computer" that way the computer
would get power and the device could hand off the awesome responsibility of
knowing what to do to the computer.
Regards, Steve
-
On Tue, 2006-01-24 at 10:53 -0500, Alan Stern wrote:
>
> That having been said, you should note that almost none of the USB
> controller hardware found in desktop/laptop computers and a surprisingly
> small percentage of external hubs support port power control. (I say
> surprisingly because pow
Back in June 2004, Alan Stern answered a question about whether
it was possible to power off individual USB ports via /sys with
a resounding "No". Has this changed in later kernel versions? I notice
there is a devices/*/power/state file which is writeable.
Our particular issue is that we have a US
On Wed, 2006-01-11 at 14:11 +0200, Petko Manolov wrote:
>
> Why don't you try to remove the following lines from intr_callback()
> ---
> if (d[0] & NO_CARRIER)
> netif_carrier_off(net);
> else
> netif_carrier_on(net);
> ---
> and see if that fixes your problem?
>
> I'll be ver
On Wed, 2006-01-11 at 10:31 -0500, Alan Stern wrote:
> This is a naive question from someone who doesn't know anything about
> OHCI. Can you modify the routine that writes OHCI_USB_OPER to make it
> wait until SF is set? If you do, does that help? Or does it just hang?
I am much more naive i
quirks for the OHCI controller on the
S3C2410?
(I tried unsuccessfully to register on the Samsung site in case there
was more info.)
3) Does this suggest anything to anyone? Is the micro-symptom plausibly
connected to the gross, non-enumeration symptom?
Thanks for a
I am trying to debug what I suspect is flaky hardware; an ARM
(S3C2410) system
that normally finds a 4 port hub and two attached devices is now
not finding anything. FWIW, I have some debug turned on, and the
some relevant dmesg printout is the following (I'll go see
if I can extract any info from
The theoretical
maximum transfer rate is around 1 MB/sec. So how are you getting 14
times the possible transmission rate?
Ehci has to be involved somewhere, either compiled in or it is already
loaded.
Regards ~Steve
---
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On Tue, 2006-01-03 at 12:32 -0800, Alan Stern wrote:
> On Tue, 27 Dec 2005, Steve Calfee wrote:
>
> > From the Kitty USB Analyzer:
> > frame # 810 f=12001 sync 30772 SOF(xa5) frame 810 crc5 0x5 f=0
> >
> > frame # 811 f=12002 sync 30780 SOF(xa5) frame 811 crc5 0
I am using a Linksys USB100TX USB/ethernet adapter (Pegasus II),
and although it appeared to work well with 2.6.10, I had problems with
2.6.14.3; one symptom was that a flood ping to the machine with
the Linksys would lose lots of packets. I further localized this
to the fact that problem occur
onnected to the ohci root hub, the
SOFs keep going out on the lines to the flash device, but windows stops
talking to it.
HTH - Regards Steve
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for problems? St
C_SET_FIFO_EN;
>
>/* causing ACK handshaking by setting the
*/
>* CTRL.SET_FIFO_EN bit with an empty */
> * endpoint 0 FIFO. */
Says that setting the value in the ctrl reg will send a zero l
in just its "enhanced" EHCI hardware. I imagine
that when Intel was doing the prototype EHCI chip they either had a bug
in FS/LS or ran out of time and just tacked on their existing UHCI
controller hardware to get it out the door.
Regards, ~Steve
--
s viewable on a windows box with SnoppyPro
installed, it has a nice gui to read it in, an export of that same file
is attached.
Steve
GET_DESCRIPTOR_FROM_DEVICE
0
-1
CONTROL_TRANSFER
0
-1
On Tue, 2005-11-29 at 10:49 -0800, Pete Zaitcev wrote:
> On Tue, 29 Nov 2005 03:03:15 -0800, Steve Bangert <[EMAIL PROTECTED]> wrote:
>
> > I tried getting a usbmon trace while doing an insmod of uhci-hcd.ko but
> > there's a chicken and egg scenario, /sys/kernel/
On Tue, 2005-11-29 at 11:31 -0500, Alan Stern wrote:
> On Tue, 29 Nov 2005, Steve Bangert wrote:
>
> > Five days later the printer decides to stop working again, so here's a
> > trace when i insmod the printer driver ( printer inop.)
>
> You know, this suggests st
On Wed, 2005-11-23 at 21:58 -0500, Alan Stern wrote:
> On Wed, 23 Nov 2005, Steve Bangert wrote:
>
> > > What happens if you move or rename the usblp.ko driver module, so that
> > > it's not available at boot time? You could then insmod it later on.
> &
On Sun, 27 Nov 2005, Steve Calfee wrote:
> >When a control request arrives on ep0 and the gadget has to do a lot of
> >processing before completing the data or status stages of the request,
> >there's a possibility that the host might time out and send another
> >req
On Wed, 2005-11-23 at 10:54 -0500, Alan Stern wrote:
> On Wed, 23 Nov 2005, Steve Bangert wrote:
>
> > > These traces show that the same data is getting sent to the printer in the
> > > same way each time. So there's nothing wrong with the printing procedure
>
On Tue, 2005-11-22 at 16:51 -0500, Alan Stern wrote:
> On Tue, 22 Nov 2005, Steve Bangert wrote:
>
> > Ok, here's the two raw text files sent directly to the device node,
> > this one a repost of the non-working printer:
> >
> > ddb97300 1765765675 S Bi:003:02
827352 C Bo:003:01 0 4096 >
d86cfe00 2949827391 S Bo:003:01 -115 251 = 000103fc fc00010f f0fc0001
3fc0fc00 00fffc00 0103fcfc 00010ff0 fc00013f
d86cfe00 2949828359 C Bo:003:01 0 251 >
d86cfe00 2950231072 S Bo:003:01 -115 1987 = c0003ff0 0300 00ffc081
00810081 008100d5 00c30001 3ff0fc00 01ff
On Tue, 2005-11-22 at 10:49 -0500, Alan Stern wrote:
> On Tue, 22 Nov 2005, Steve Bangert wrote:
>
> > I made two text files, one file had 8 one's in it and the other has 16
> > one's in it, i sent those files to the printer device node one after the
> > other w
On Mon, 2005-11-21 at 17:20 -0500, Alan Stern wrote:
> On Mon, 21 Nov 2005, Steve Bangert wrote:
>
> > > daa3b200 5540696 S Bi:006:02 -115 8192 <
> > > d357fb00 5540774 S Ci:006:00 s a1 01 0001 1 <
> > > daa3b200 5541970 C Bi:006:02 0 0
>
On Mon, 2005-11-21 at 16:08 -0500, Alan Stern wrote:
> On Mon, 21 Nov 2005, Steve Bangert wrote:
>
> > > Let's be clear. There's no point looking at log messages for a working
> > > printer; the only thing that might help is log messages for when the
> >
On Mon, 2005-11-21 at 13:53 -0500, Alan Stern wrote:
> On Mon, 21 Nov 2005, Steve Bangert wrote:
>
> > On Mon, 2005-11-21 at 12:11 -0500, Alan Stern wrote:
> > > On Mon, 21 Nov 2005, Steve Bangert wrote:
> > >
> > > > > In that run-on sente
On Mon, 2005-11-21 at 12:11 -0500, Alan Stern wrote:
> On Mon, 21 Nov 2005, Steve Bangert wrote:
>
> > > In that run-on sentence you said: when you reboot you can't print, when
> >
> > With the printer power left on.
>
> Is that true every time or only s
On Mon, 2005-11-21 at 10:06 -0500, Alan Stern wrote:
> On Sun, 20 Nov 2005, Steve Bangert wrote:
>
> > Alan,
> >
> > I originally posted this message on usb-devel list but got no response,
> > can you take a look at this please. I have a usbmon trace if that he
i do a "cat [text file] > lp0" i get nothing.
Currently I'm using Fc4 with the latest 2.6.14 errata kernel but this
condition occurs on all kernels. Any suggestions?
Steve Bangert
Here's dmesg with usb debug enabled in kernel config and in usblp.c in a
vanilla 2.6.
] and we will get back to you as soon as
possible.
I Await your Urgent Response.
Warmest Regards,
Mr., Steve Douglas.
CEO Microlinks Fabrics & Textiles.
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From: Jon Nettleton <[EMAIL PROTECTED]>
To: Steve Calfee <[EMAIL PROTECTED]>
CC: [EMAIL PROTECTED], [email protected]
Subject: Re: [linux-usb-devel] ehci_hcd proper negotiation down to usb 1.1
Date: Thu, 06 Oct 2005 20:58:01 -0400
On Thu, 2005-10-06 at 15:39
emblies are
prohibited.
The spec also forbids extension cables, and I have two devices that came
with them. Protocols are rules. People violate rules. Expecting an OS to get
around violations can be a never ending game.
Regards ~Steve
--
are using an ancient kernel interfacing via an unknown bus to
> your
> custom hardware. What you have to do is UTSL and look at a comparable
> driver
> and how it tied into the bus, for instance if you have an onchip
ethernet
> mac/phy and it is controlled by a kernel driver you can tr
y, packaged way over this hurdle.
Regards ~Steve
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From: Pete Zaitcev <[EMAIL PROTECTED]>
Date: Thu, 14 Jul 2005 16:13:19 -0700
On Thu, 14 Jul 2005 14:40:41 -0700, "Steve Calfee"
<[EMAIL PROTECTED]> wrote:
> I don't know where to go from here. I kind of think maybe discussing a
tool
> that supports a tool tha
send you
the
> awk script, and maybe together, over time we can improve its decoding?
Hi Steve,
That looks like a really good start to me.
Do you want me to generate some more usbmon logs to test with?
Thanks,
---
~Randy
Hi Randy,
I don't know where to go from here. I kind of think
Date: Tue, 12 Jul 2005 10:37:59 +0530
Hi Randy, Steve and Group,
Thanks for your quick and positive response.
The information you have provided have helped me a lot as I am new to
this area. I saw all the related codes. Thanks once again.
Steve recommended going by adding an external ehci or
>On Sun, 10 Jul 2005 21:13:13 -0700 Steve Calfee wrote:
>
>| > >From: Pete Zaitcev <[EMAIL PROTECTED]>
>| > >To: randy_dunlap <[EMAIL PROTECTED]>
>| > >Cc: [EMAIL PROTECTED], [email protected]
>| > >Subject: Re: [linux-usb-
t;
>---
>~Randy
This comes up all the time. Unless mot/freescale has changed their CPM you
are in trouble. Your chip seems to have a nice PCI bus, I recommend adding
an external ehci or ohci controller.
See: http://sourceforge.net/mailarchive/message.php?msg_id=10737040
or search the list arc
On Sun, 10 Jul 2005 21:13:13 -0700 Steve Calfee wrote:
| > >From: Pete Zaitcev <[EMAIL PROTECTED]>
| > >To: randy_dunlap <[EMAIL PROTECTED]>
| > >Cc: [EMAIL PROTECTED], [email protected]
| > >Subject: Re: [linux-usb-devel] Patch to m
will try to
do a converter to run usbmon output through this AWK decoder program. (I
don't have a working Linux system right now). If I can do a converter I
think this GAWK program will help make the usbmon stuff more helpful.
Regards ~Steve
>The tcpdump supports that, and i
sping now, since
someone else with a similar MB is also having problems.
Ideas? Hoping I'm not stuck with a usb2.0 add-on card,
Steve
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Those are really ancient kernels, I'm afraid. Are you able to test
2.6.12-rc5?
Both are working with 2.6.12-rc5.
is there a changes in the device name? it used to be an scsi devices (sda,
etc..) now devices name is uba . Such changes may confuse some tools.
However I got an OOPs (not usb-s
Those are really ancient kernels, I'm afraid. Are you able to test
2.6.12-rc5?
I am compiling, will send result soon. :-)
Cheers,
!DSPAM:4295b7d4953581605017493!
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Hi,
Steve, is this problem still present in 2.6.12-rc5? If so, can you pelase
send a fresh description?
I remember that I have sent email to LKML that the problem has been fixed
with 2.6.11. However I got another usb (not the one mentioned in this
email) which has the same problem with
Surely its a matter of telling hotplug's input.agent (or similar) to
recognize the screen as a mouse instead of a joystick?
Is the correct file to modify:
/lib/modules//modules.inputmap
(?)
and if so is there a reference for how to determine the correct values?
Tha
On Wed, 2005-03-02 at 18:28, David Brownell wrote:
> On Wednesday 16 February 2005 3:37 am, Steve Hosgood wrote:
> > Basically, David, your suggestion of "try small URBs" works! I am now
> > seeing 40 fps from my camera with URBs of 4K, 8K and 16K.
> OK, then this
ge their string descriptors
while in use, but I have not seen one. In fact strings are pretty useless in
a device, many don't even have any strings.
Regards ~Steve
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Read honest & candid re
e refuses to oblige.
It's just thoughts.. Anyone got any good ideas for ways to test them?
I'll run experiments on my failing machine at home if anyone has
suggestions.
The "correct" behaviour for FlightGear should be to run, but with a
uselessly slow frame rate on screen, sur
On Wed, 2005-02-16 at 19:37, David Brownell wrote:
> On Wednesday 16 February 2005 3:37 am, Steve Hosgood wrote:
> >
> > Basically, David, your suggestion of "try small URBs" works! I am now
> > seeing 40 fps from my camera with URBs of 4K, 8K and 16K.
>
> T
So I'd say that your first hypothesis below pans out nicely:
On Tue, 2005-02-15 at 23:09, David Brownell wrote:
> On Monday 14 February 2005 9:17 am, Steve Hosgood wrote:
> >
> > qh/cf49c100 dev2 hs ep2 42002202 4000 (8a00ad80* data1 nak0)
> > da98f360 in len=0
On Fri, 2005-02-11 at 17:37, David Brownell wrote:
> On Friday 11 February 2005 9:14 am, Steve Hosgood wrote:
> > On Fri, 2005-02-11 at 16:36, Alan Stern wrote:
> > > > Meanwhile, I ran my driver with detailed debugging of its own and what I
>
with
suggestions as to how we might home in on this problem. It may well not
be as far down as ehci-hcd. Where else can I put a "debug=X" at module
load time, and what values of X would be useful do you think?
> Is it possible for you to test the camera with a different computer?
>
D
next tenth of a second]
The timebomb goes off.
Tell the camera to stop streaming.
Release all URBs.
This is as close as I can get to diagnostics, since I don't have useful
access to the next layer down.
Steve
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you slow the 1600x1200 camera down much below
4.4fps, the FX2 seems to fall over, rather like you suggest. That indeed
would seem to be firmware trouble, but not really do do with what I'm
seeing here, which according to USB bus analysis really does seem to be
down to linux choosing to igno
On Wed, 2005-02-09 at 07:33, Greg KH wrote:
> On Tue, Feb 08, 2005 at 02:05:04PM +0000, Steve Hosgood wrote:
> >
> > Briefly:
> > I've written a driver for a USB camera which sends 1600x1200 or 800x600
> > images across a USB 2.0 bulk pipe. It works fine in 1600x1
g bulk packets are 512 bytes, so
it seems...
I'll follow up tomorrow with the other debug info that you request.
Steve
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ar, with the 2.6.5
kernel. I'm on Fedora Core 2 with the stock 2.6.10-1.9_FC2 kernel now.
Any news would be good.
Thank you all for your time.
Steve Hosgood.
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Read honest & candid r
ter
detection by counting the number of SOFs after device detection (The start
of the trace win98=138 frames winXP=28 frames). You can count the number of
ms after reset by counting the SOF after the SEO reset device 0 and got
ready to set an address (win98=44 frames winXP=17 frames).
any problems
with usb-storage or disk corruption, right?
Thanks again,
-steve
Here is the log. First, plugging in the iPod with the ehci module loaded:
Oct 17 13:11:03 doolittle kernel: ehci_hcd :00:1d.7: GetStatus port
4 status 001803 POWER sig=j CSC CONNECT
Oct 17 13:11:03 doolittle ke
Alan --
Alan Stern wrote:
On Sat, 9 Oct 2004, Steve Krulewitz wrote:
This looks like a bug in the iPod. After transferring 312 64-byte packets
it tried to send something longer than 64 bytes. Probably 512 bytes, for
some reason thinking it was running at high speed rather than full speed.
I
9a 84 fe ff ff 8b 82 84 fe ff ff 8b 4b 04 <89> 01
89 48 04 b8 00 01 10 00 c7 43 04 00 02 20 00 8d 9a 8c fe
<6>note: kblockd/0[27] exited with preempt_count 1
thanks again for your continued help,
-steve
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y was various flavors
of Windows, so that will be the most tested path for devices).
my $.02
Regards ~Steve
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e uba, logical block 2
end_request: I/O error, dev uba, sector 6
Buffer I/O error on device uba, logical block 3
end_request: I/O error, dev uba, sector 0
Buffer I/O error on device uba, logical block 0
unable to read partition table
usbcore: registered new driver ub
thanks
nfortunately, I don't have the available hardware to test these things.
Is there anything else I can try to help debug the issue? Might it be
worth while to downgrade to a previous kernel version, and if so, which
version should I try?
Thanks for all your
each transfer will be
completed on each reception and there is no zero length record.
Also, the zero length record ending a transfer of even maxpacketsize*n is
only a requirement for control transfers. A user level bulk or interrupt
protocol can use any method for determining when a transfer is
From: Alan Stern <[EMAIL PROTECTED]>
To: Steve Calfee <[EMAIL PROTECTED]>
CC: [EMAIL PROTECTED], <[EMAIL PROTECTED]>,
<[EMAIL PROTECTED]>
Subject: Re: [linux-usb-devel] USBDEVFS_CONTROL behaviour difference
between 2.4.27 and 2.6.7
Date: Sun, 5 Sep 2004 11:13:5
by the device endpoint 0 max packet length, not by a windows on the fly
"decision".
Regards, Steve
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st numbers frames sequentially for
reference in the trace.
Regards, Steve
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Title: Kitty USB Trace
Date: Thu, 2 Sep 2004 11:51:29 -0400 (EDT)
On Wed, 1 Sep 2004, Steve Calfee wrote:
> Yes, not much difference.
>
> The strange thing is that even though windows knew exactly how long the
> configuration packet was (after reading the first 9 bytes), it asked for
255
> bytes! Thi
Date: Wed, 01 Sep 2004 16:03:57 -0700
On Wed, 1 Sep 2004, Steve Calfee wrote:
> The answer is complicated. There is no "Windows" -- each version is
slightly
> different. win98 did things differently than xp does. I enclose a couple
of
> device enumerations from "XP home&
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