as with
non-root hubs, if you want the periodic interrogations to stop during a
suspend then the URB should be unlinked. So I moved the check for whether
the HC is running to the place where the timer is first started when the
URB is submitted, instead of checking whenever the timer expires.
Alan
for control
transfers. I also fixed a bug in usb_hcd_giveback_urb(), whereby the code
would attempt to unmap the buffers even for non-DMA host controllers.
Alan Stern
# This is a BitKeeper generated patch for the following project:
# Project Name: greg k-h's linux 2.5 USB kernel tree
# This patch
, but that shouldn't hurt -- especially
since no drivers currently use usb_buffer_map()!
Alan Stern
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it back to
the same scsi entry.
This behavior has been changed in 2.5, where the scsi entry does go away
when you unplug the drive.
Alan Stern
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thread debugger
to recognize that the new disk is a different
device and assign it a different scsi host number. It does this by
comparing vendor/product ID's and serial numbers.
So your old disk would still be sdb1 and would still be inaccessible,
while the new disk would be sdc1.
Alan Stern
it would make the schedule inconsistent.
It's a puzzling problem.
Alan Stern
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you've never dreamed
doesn't
contain anything.
Thanks,
Alan Stern
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Greg:
Not having heard any complaints about this patch, I'm submitting it. It
fixes a problem with the root hub status URB implementation; the timer
that controls the root hub polling was not getting reset during a PM
suspend.
Alan Stern
# This is a BitKeeper generated patch
rely on it to store
your files correctly, why do you want to hook it up to your computer at
all?
Alan Stern
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a clean release (like 2.5.70).
What about patches against linuxusb.bkbits.net/usb-2.5? Or is that what
you meant when you wrote my tree (that's the above link) rather than
kernel.bkbits.net/gregkh/usb/usb-2.5-bk?
Alan Stern
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Greg that this is a real bug. In the
meantime, see if this helps.
Alan Stern
= class.c 1.30 vs edited =
--- 1.30/drivers/base/class.c Tue Jun 3 15:15:17 2003
+++ edited/drivers/base/class.c Wed Jun 11 14:50:39 2003
@@ -282,8 +282,12 @@
class_device_driver_link(class_dev
-transfer_flags |= URB_NO_DMA_MAP;
to
+ kaweth-irq_urb-transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
Alan Stern
# This is a BitKeeper generated patch for the following project:
# Project Name: greg k-h's linux 2.5 USB kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher
for the default
case.
Maybe someone else with, say a USB keyboard and mouse, can try it out and
verify that it's okay.
Alan Stern
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been some changes in the scsi
driver that affect usb-storage at exactly the spot where your log
says the device hung.
Alan Stern
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On Fri, 13 Jun 2003, Matthias Fuchs wrote:
Hi Alan,
Alan Stern wrote:
Can you try using your device on a regular PC?
I did that before. Seems to work under 2.4.18 (SuSE kernel).
Can you try using Linux 2.5.70 to see if that helps?
No, I cannot try that, since this kernel
the module before
plugging the disk in to make things work.
That sounds interesting. Can you post a copy of the oops output? Maybe
also a copy of the usb-storage debugging log showing what happens when you
try to run fdisk?
Alan Stern
file problem.
As I said before, you have to post another copy of the usb-storage
debugging log before I can tell the reason for that error message. Quite
likely it is a problem with the firmware. But there's no way to know
without more information.
Alan Stern
.
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is
reiserfs getting upset about its journalling device going offline.
Alan Stern
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/sd.c, approximately line 1346, right
after the line that says strcpy(gd-devfs_name,sdp-devfs_name); the
statement
printk(KERN_INFO scsi devfs_name: %s\n, sdp-devfs_name);
and then try again plugging in the disk with sd_mod already loaded.
Alan Stern
not to
back-port the new codes so that unusual_devs.h can remain consistent
between the two versions. I'll work on that too.
Alan Stern
On Wed, 18 Jun 2003, Greg KH wrote:
ChangeSet 1.1318.4.11, 2003/06/17 14:38:38-07:00, [EMAIL PROTECTED]
[PATCH] USB: Patch for Vivicam 355
drivers/usb
.
About possible performance improvement on 2.5 ehci/usb-storage:
I've tested with 2.5.71, and I don't see a significant improvement over 2.4.
(Both are arround 7.7 MB/s for read, 10 MB/s for write). Disk can do arround
40 MB/s reads on IDE.
I don't know what's going on there.
Alan Stern
the data. The data doesn't
even have to be all there, just enough to fill up the next packet.
There's nothing very funny about it -- in fact, in would _really_ be funny
if the device could transmit the data _before_ it was there! :-)
Alan Stern
/bus/usb/devices file
with both the memory stick reader and the external floppy drive plugged in
(or if you prefer, one copy with the reader plugged in and another copy
with the drive plugged in).
Thanks.
Alan Stern
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wanted to get
rid of FIXMEs from my driver source.
Alan Stern
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Can you also send the /proc/bus/usb/devices information with your floppy
drive plugged in?
Alan Stern
On Mon, 23 Jun 2003, Stelian Pop wrote:
Here they are.
Stelian.
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D
(), which does execute at the right time.
Maybe there's a less invasive way to accomplish the same thing, but I
can't think of one.
Alan Stern
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On Wed, 25 Jun 2003, Tuukka Toivonen wrote:
Alan Stern wrote:
Look at usb-skeleton.c. Exactly this problem was corrected there by
adding a static lock a couple of months ago.
Thanks for the tip. Although my intention was not to ask how to fix the
bug, but point out that ov511.c appears
the usb-storage driver.
Alan Stern
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for every queued IN TD and no others.
Alan Stern
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for how to fix this in the past on the mailing
list, but I don't think they ever went very far.
Alan Stern
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, I'm not certain that it is correct. But it's the only way I
could think of that the HC would see those TDs after they were freed, and
in any case it's a hole that ought to be plugged.
But yes, the fact that it only showed up with queued URBs would be a
timing coincidence.
Alan Stern
. However, IGNORE_SER is only present in
one entry in unusual_devs.h. There would be no harm in re-introducing
that entry back to 2.5, simply by defining the flag to have a value of 0.
That way the two versions of the file could remain identical.
Alan Stern
you
see there.
Alan Stern
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On Mon, 30 Jun 2003, Greg KH wrote:
On Sun, Jun 29, 2003 at 12:16:01PM -0400, Alan Stern wrote:
Perhaps they should be. One patch I sent in not too long ago removed some
flag bits that are completely unused in 2.5 and almost, but not quite,
entirely unused in 2.4. I believe the two
-MEDIUM-REMOVAL command.
However, it's harmless because everything else still works correctly. My
advice is just go ahead and ignore those warning messages, since you know
that it really is working okay.
Alan Stern
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. What are the problem's symptoms? Can you mount the
device?
Alan Stern
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feature (see usb_clear_halt()).
You will generally have to do this anyway, because when anything goes
wrong the device will stall the endpoint.
Alan Stern
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://sourceforge.net/mailarchive/forum.php?thread_id=2693048forum_id=5398
Maybe you can swap notes and see if you can figure anything out.
Alan Stern
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a
period of at least a couple of minutes. With that information, we may
be able to say definitely that this is (or is not) a firmware issue.
Alan Stern
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you've unmounted it! Of
course, that's not much help when the device is failing.
There's no reason to run a memory test on your machine, contrary to what
Joshua Wise suggested.
Alan Stern
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driver should do that.
Alan Stern
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On Tue, 1 Jul 2003, Adam Kessel wrote:
On Tue, Jul 01, 2003 at 12:06:14PM -0400, Alan Stern wrote:
I think those particular error messages arise because your device has
problems handling a command telling it to lock/unlock its door.
Does this violate a standard? Is there an appropriate
has an error similar to the PIIX4.
Do you advise me to try 2.5.74?
It won't hurt to try. And it might end up working better than 2.5.70.
Alan Stern
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fixed, the host_reset() function won't even be invoked. And if it is
invoked, it should not return SUCCESS -- that would mean it had tried to
fix a problem by changing some hardware state when in fact it had not done
so.
Alan Stern
sort of test using Linux 2.5?
Alan Stern
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On Sat, 5 Jul 2003, Deti Fliegl wrote:
Alan Stern wrote:
The correct thing to do is to create a new entry in unusual_devs.h. The
instructions for submitting such changes are given at the top of the
source file.
understood and ready to the receive a brown paper bag award. It's
somehow
-storage
driver in future releases of Linux.
Alan Stern
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your chipset as well as the PIIX4.
Alan Stern
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and usb-storage modules are loaded, but where the P9 works, the
P92 is not accessible. I think this may be due to a missing
vendor/product entry.
See the thread
http://sourceforge.net/mailarchive/forum.php?thread_id=2717053forum_id=5398
Alan Stern
the underlying error.
Is there any sort of convention (a la Documentation/CodingStyle) about
whether this approach should be used in general? There are _lots_ of
places in the kernel where unnecessary checks for NULL pointers are made.
Alan Stern
= usb-skeleton.c 1.54 vs edited
.
The transfer flags have nothing to do with the race condition
mentioned above. Furthermore, USB_QUEUE_BULK isn't even supported under
2.5 because it's unnecessary -- bulk URBs are always queued. That's one
of the ways in which 2.5 is superior to 2.4.
Alan Stern
a peripheral device management program which would store the
configurations in a file, and a hotplug script could read and transmit the
file to the driver each time an interface is attached.
I hope this is the sort of thing you're looking for...
Alan Stern
?
I think that's right -- if not someone will surely correct me. But I
still urge you to start writing your driver for 2.5. When it works okay
you can port it back to 2.4.
Alan Stern
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help. Greatly appreciated.
Leigh Bassett
You're welcome.
Alan Stern
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On Wed, 9 Jul 2003, Greg KH wrote:
On Mon, Jul 07, 2003 at 10:20:32AM -0400, Alan Stern wrote:
Greg:
This fixes a minor error in usb-skeleton's disconnect() routine: if the
interface's private data is NULL, the current code exits without releasing
the disconnect_sem semaphore
similar to a device mentioned in
linux-2.4.18/drivers/usb/storage/unusual_devs.h which is product id 3.
I've tried adding a section to unusual_devs.h as suggested by Alan Stern
in the above message. That section is:
/* Same as above, for product id 5, seems to have similar problem.
* Needed
else, although I might be wrong
about that.
Alan Stern
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-storage driver in future releases.
I don't know why your camera is showing up as scsi-generic rather than a
scsi-disk device under 2.5.75. Maybe someone else on the list can answer
that.
Alan Stern
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in the Flashbuster-U entry should definitely be US_PR_DEVICE.
Quite likely the US_PR_CB in the Memorystick entry should also be
US_PR_DEVICE -- the /proc/bus/usb/devices info says that ought to work.
I would appreciate it if you try it and let me know if it really does work
okay.
Alan Stern
_static_ lock.
Many examples can be found in the kernel sources.
Right. So let's look at drivers/usb/ov511.c (2.4.21).
Look at usb-skeleton.c. Exactly this problem was corrected there by
adding a static lock a couple of months ago.
Alan Stern
the
same effect as your patch but in a slightly different way.
Comments?
How does this work? It's a smaller change, against BK-current.
But maybe David will prefer to change ohci-pci.c instead.
Alan Stern
= hcd.c 1.107 vs edited =
--- 1.107/drivers/usb/core/hcd.cThu Jun 12 10:28
shut down. If I try to *remount* the drive at this point or
reload the uhci-hcd module, the process gets stuck irretrievably.
Again, debugging output and the kernel log from the segfault would be
useful.
Alan Stern
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, you can't directly create or store any
information in a TD; all the TDs are set up and controlled by the HC
driver.
The driver knows when to set the bit because it keeps track of every
packet it sends and the state of every endpoint in every device it's
connected to.
Alan Stern
plugged in.
Alan Stern
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and then hangs. It might help to see how
it is able to reply properly with a different version of the driver.
Also include a copy of /proc/bus/usb/devices, just to be thorough.
Alan Stern
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Error
without a small hiccup.
Try rebuilding your kernel and enabling USB debugging and usb-storage
debugging. Although this produces a lot of debugging messages in the
system logs, it might indicate where the problem lies.
Alan Stern
that will include
this entry plus a couple of others.
Alan Stern
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things started to go
wrong.
Alan Stern
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if an urbp is
still on that list. But that only happens if you have configured USB
debugging in your kernel.
If you haven't done that, try running the test again with USB debugging
on. Or if you already have, look through the system log for messages from
the uhci driver.
Alan Stern
On Wed, 16 Jul 2003, Charles Lepple wrote:
Alan Stern said:
This is a problem in uhci-hcd. A struct urbp (private data structure) is
being accessed after it has been freed. More specifically, the list of
unlinked URBs (uhci-urb_remove_list) has been corrupted: it points
.
The presence or absence of the firmware doesn't seem to affect whether
this bug comes up.
Alan Stern
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. And EPIPE is often not handled.
It's cleanup time now :-)
It's an unglamorous job, and I'm grateful that you're doing it.
Alan Stern
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the test, it will print out the actual length in
the system log. Let us know when you've got the results ready.
Alan Stern
= sd.c 1.52 vs edited =
--- 1.52/drivers/scsi/sd.c Tue Jul 1 17:54:19 2003
+++ edited/drivers/scsi/sd.cThu Jul 17 10:52:10 2003
@@ -1135,6 +1135,7
and the diagnostic patch I sent
yesterday.
Alan Stern
= uhci-hcd.c 1.53 vs edited =
--- 1.53/drivers/usb/host/uhci-hcd.cWed Jul 2 12:28:41 2003
+++ edited/drivers/usb/host/uhci-hcd.c Thu Jul 17 12:02:10 2003
@@ -1534,11 +1534,11 @@
break;
}
- urbp-status
On Thu, 17 Jul 2003, Charles Lepple wrote:
Alan Stern said:
The information in the -g4 log was helpful. Here's another patch, which
is my attempt to fix the bug. It actually changes two things:
Cool, thanks! No more kernel panics-- my filesystem thanks you. However,
the test still
On Thu, 17 Jul 2003, David Brownell wrote:
Alan Stern wrote:
Remove_list is a list of URBs that were unlinked by the user.
Complete_list is a list of URBs that are ready to be sent to
giveback_urb(), either because they completed or because they were
unlinked. The URB's hcd-private
. It
seems best just to check for Intel being the manufacturer, especially
since it doesn't hurt to check for the condition when it isn't present or
is only temporary.
Please apply.
Alan Stern
= uhci-hcd.c 1.53 vs edited =
--- 1.53/drivers/usb/host/uhci-hcd.cWed Jul 2 12:28:41 2003
, looking through the code it appears that
urbp-status is completely unnecessary, since it should pretty much always
be equal to urb-status. Is there any reason for keeping urbp-status?
Alan Stern
P.S.: In addition, when URBs are dequeued, they should be added to the
_tail_ of remove_list. That way
the device misbehavior prevented
the queue from being processed correctly, that would explain the out
of order for subcase 3.
Can you suggest any additional diagnostics that might help?
Alan Stern
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that the USB controller itself is broken -- talk about
grasping at straws!
Alan Stern
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On Thu, 17 Jul 2003, Johannes Erdfelt wrote:
On Thu, Jul 17, 2003, Alan Stern [EMAIL PROTECTED] wrote:
A bug has turned up in the UHCI driver. Briefly, when an URB completes,
uhci_transfer_result() doesn't store the status in urb-status but only in
urbp-status. urb-status is set just
.
Alan Stern
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driver won't
touch the URB _at all_ once it has been submitted until the completion
callback.
So I don't see what the danger is.
Alan Stern
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that this behavior is a bug.
IMHO the only way to learn whether an URB can be unlinked
is to try it.
Is there any point in the code that tries to determine whether an URB can
be unlinked without actually trying it?
Alan Stern
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On Thu, 17 Jul 2003, Pete Zaitcev wrote:
Date: Thu, 17 Jul 2003 23:01:42 -0400 (EDT)
From: Alan Stern [EMAIL PROTECTED]
[...] But a properly-written driver won't
touch the URB _at all_ once it has been submitted until the completion
callback.
I said the same. It cannot look
to have the
same effect as rmmod-ing the HCD.
Alan Stern
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Charles:
Just for kicks, try applying this patch and running test 10. I don't
really know if it ought to make a significant difference, but it might.
This is kind of a shot in the dark.
Alan Stern
= uhci-hcd.c 1.54 vs edited =
--- 1.54/drivers/usb/host/uhci-hcd.cThu Jul 17 12
to mean that. You take unlink to mean eventually call the
completion handler with urb-status equal to -ENOENT or -ECONNRESET,
regardless of what the lower level driver or the hardware does.
Bearing that in mind...
On Fri, 18 Jul 2003, David Brownell wrote:
Alan Stern wrote:
On Fri, 18 Jul 2003
that information for an unlinked
URB in any event.
Alan Stern
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at all. Both devices should
work fine with the most recent versions of the kernel. Try 2.4.22.
Alan Stern
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could do about it? (heh - maybe I have to learn to
write my own driver... or just sell this stupid thing :( )
You could try configuring usb-storage debugging on in your kernel. The
debugging messages will help to show more precisely where your problem
comes from.
Alan Stern
, hcd_endpoint_disable() has an
irq-related error, and hub_events() could stand to be written a little
more defensively.
Alan Stern
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to help improve the
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of my tests, and of
course the driver just hung.
Free the usbtest_dev structure! This was a rather surprising
memory leak.
Alan Stern
= usbtest.c 1.30 vs edited =
--- 1.30/drivers/usb/misc/usbtest.c Mon Jul 14 16:35:15 2003
+++ edited/drivers/usb/misc/usbtest.c Mon Jul 21
.
In fact, since the routine ends with might_sleep() anyway, I don't see any
reason to save the interrupt state at all. My patch just disables
interrupts at the start and enables them at the end. I'm not sure that's
how you intended it to work, so you may want to change it a little.
Alan Stern
be more like the traditional
division of labor into top halves (which do just enough to turn off a
device's interrupt request) and bottom halves (which do the actual work).
Alan Stern
= hub.c 1.112 vs edited =
--- 1.112/drivers/usb/core/hub.cFri Jun 20 13:12:57 2003
+++ edited
Sorry, my original posting had a missing '}'. Here's the corrected
version.
Alan Stern
= hub.c 1.112 vs edited =
--- 1.112/drivers/usb/core/hub.cFri Jun 20 13:12:57 2003
+++ edited/drivers/usb/core/hub.c Mon Jul 21 11:35:07 2003
@@ -876,13 +876,6 @@
unsigned int
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