it's wise to add a transition from NOTATTACHED to
CONFIGURED.
Another good point.
Alan Stern
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the gadget is
unregistered.
Also, what happens if two state transitions occur before the work queue
gets around to executing the work routine?
Alan Stern
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On Thu, 18 Jul 2013, Ming Lei wrote:
On Thu, Jul 18, 2013 at 3:24 AM, Alan Stern st...@rowland.harvard.edu wrote:
On Thu, 4 Jul 2013, Alan Stern wrote:
On Thu, 4 Jul 2013, Ming Lei wrote:
If so, your coming change may break ABI because as you described
that the flag should be set
may be seldom triggered, do you know under
which condition the stopped is triggered in your problem?(stall, short read
or others)
I was going to ask the same question. This particular piece of code
gets executed _only_ when an URB is unlinked. Not during any other
kind of error.
Alan Stern
?
Not as far as I know.
Alan Stern
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) otg_set_host(hcd-phy-otg, 0);
omap_ohci_clock_power() should be called after usb_remove_hcd(), not
before. This reason is simple: Until usb_remove_hcd() is called, the
controller is still running and therefore needs to have a valid clock
signal.
Alan Stern
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it by calling usb_hcd_resume_root_hub(). For system suspend,
you have to make the appropriate platform-specific arrangements so that
wakeup events will actually cause the system to wake up.
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;
- orig = ohci_hub_status_data(hcd, buf);
+ orig = orig_ohci_hub_status_data(hcd, buf);
Since you're changing the line anyway, you should get rid of the extra
space before the '='.
After you make those two changes, you can add my Acked-by.
Alan Stern
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MODULE_ALIAS line down here with these lines.
Alan Stern
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that only a few HCDs other than ehci
currently implement the endpoint_reset method: xhci, whci, dwc2, and
ozwpan. It would not be hard to fix them up to ignore calls for
isochronous endpoints.
Any objections to this approach?
Alan Stern
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with -EINVAL.
Yes, it is the right command. You may need to do a little debugging to
find out where in usb_set_configuration() the error occurs.
Alan Stern
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drivers were using the drvdata value even after their remove function
returned.
Several commits have been applied to fix those bugs. Finding and
backporting them and their dependencies will not be easy.
I suggest this patch not be applied.
Alan Stern
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with USB-3 devices when the sequence numbers
get out of alignment.
Alan Stern
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.
I don't know -- it's up to Clemens.
Alan Stern
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usb_host_endpoint *);
Does that look okay?
Alan Stern
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not cause any
errors.
IMHO, if the qTD list is broken the HC think there is no qTD to send.
So I added mb() at hw_next update code.
At the time when the hw_next update gets executed, what is the value of
state? It should be QH_STATE_IDLE.
Alan Stern
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, and a1028f0abfb3. Admittedly, these are all related
problems in a single subsystem, but it gives you a little idea of how
far this goes.
Alan Stern
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suggest allocating
and deallocating a buffer in the function that calls the quirk
routines, and have it pass the buffer as an extra argument.
Many thanks for your help. That was exactly what I was looking for.
You're welcome.
Alan Stern
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in to an OHCI controller and when it is plugged in to an EHCI
controller? Instructions are in Documentation/usb/usbmon.txt.
Alan Stern
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drivers.
Alan Stern
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On Sat, 20 Jul 2013, Clemens Ladisch wrote:
Alan Stern wrote:
On Sat, 20 Jul 2013, Mariusz Grecki wrote:
+ u16 buf = 1;
+
+ snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ 0, 0, buf, 2
that it could
easily be made hcd-specific. I haven't done that because the regions
it protects are all very short, so there probably isn't very much
contention.
fixed by changing drivers.
If only very less drivers need the change, I agree with you.
Okay, good.
Alan Stern
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On Fri, 19 Jul 2013 sgtcapsl...@lavabit.com wrote:
Can you provide usbmon traces showing what happens when the mouse is
plugged in to an OHCI controller and when it is plugged in to an EHCI
controller? Instructions are in Documentation/usb/usbmon.txt.
Alan Stern
Absolutely. Ahh
the circumstances, I guess we have to err on the safe side and
keep the two functions separate.
Alan Stern
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the name string. Have the
consumer pass the data structure's address when it calls phy_create,
instead of passing the name. Then you don't have to worry about two
PHYs accidentally ending up with the same name or any other similar
problems.
Alan Stern
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On Sat, 20 Jul 2013, sgtcapslock wrote:
This could be considered a bug in the usbhid driver. As far as I can
see, the only way to fix it is to use two interrupts URBs rather than
one.
Alan Stern
Thanks a lot for taking time to diagnose this, I appreciate it! I think
I
On Sun, 21 Jul 2013, Ming Lei wrote:
On Sun, Jul 21, 2013 at 2:00 AM, Alan Stern st...@rowland.harvard.edu wrote:
On Sat, 20 Jul 2013, Ming Lei wrote:
No, we don't have to change every driver using isochronous URBs. Many
of them set URB_ISO_ASAP on every URB -- in fact, AFAIK snd-usb
does phy_create() fit into this picture?
Alan Stern
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be a bug in the logic of sg_complete() or usb_sg_wait().
_That_ logic bug is what needs to be fixed.
Alan Stern
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().
Reported-by: Alan Stern st...@rowland.harvard.edu
Signed-off-by: Felipe Balbi ba...@ti.com
---
drivers/usb/dwc3/ep0.c | 13 +++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 007651c..7fa93f4 100644
--- a/drivers/usb
);
device_unregister(gadget-dev);
+ flush_work(gadget-work);
Shouldn't the flush_work() call come before device_unregister()? You
don't want to call sysfs_notify() on an unregistered device.
Alan Stern
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, but it's enough to do it in xHCI only
because the hub driver doesn't start running again until after both hosts are
resumed.
Signed-off-by: Mathias Nyman mathias.ny...@linux.intel.com
Acked-by: Alan Stern st...@rowland.harvard.edu
It is noticeable that this code:
diff --git a/drivers/usb
and then continues on a different CPU?) But I think
it would still have higher overhead than calling usb_new_iso_stream
once, whenever a new stream is started.
Alan Stern
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More
);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ }
+
+ return ret;
+}
All good.
Alan Stern
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?
phy_create is the API by which the PHY's driver (the supplier) hook into the
PHY framework. It's like the controller driver will always interact with the
PHY driver through the PHY framework.
Alan Stern
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/ohci-omap3.c | 10 +-
drivers/usb/host/ohci-ppc-of.c| 11 +--
8 files changed, 8 insertions(+), 82 deletions(-)
Acked-by: Alan Stern st...@rowland.harvard.edu
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really provide a
pointer to ML archives).
Ah, ok. I wasn't aware of that. I'll assume then that the necessary
people have the complete picture.
It might help to get a usbmon trace and dmesg log from Linus, if he
still has this problem.
Alan Stern
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On Tue, 23 Jul 2013, Ming Lei wrote:
On Mon, Jul 22, 2013 at 11:09 PM, Alan Stern st...@rowland.harvard.edu
wrote:
On Mon, 22 Jul 2013, Ming Lei wrote:
Not exactly. The HCD has to keep track of the next available time slot
for the endpoint. Some special value, like -1
On Thu, 10 May 2012, Clemens Ladisch wrote:
Alan Stern wrote:
Can you explain briefly how the snd-usb-audio driver decides how many
URBs to submit and how many isochronous packets to use in each URB?
The default is to have 8 ms per URB (which can be adjusted with the
nrpacks module
;
|
| direction = !dwc-ep0_expect_in;
| dwc-delayed_status = false;
| usb_gadget_set_state(dwc-gadget, USB_STATE_CONFIGURED);
I see. Doesn't the mass-storage gadget also use delayed status when
going into the _un_configured state?
Alan Stern
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, void *data)
{ dev_set_drvdata(gadget-dev, data); }
Acked-by: Alan Stern st...@rowland.harvard.edu
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.
As the OMAP IO pad wakeup management code [1] is still in transition, I'll
wait till
that gets settled and then resend this series.
Okay.
Alan Stern
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, it is actually correct.
Can you post a usbmon trace showing what happens when the dongle is
first plugged? Instructions are in the kernel source file
Documentation/usb/usbmon.txt.
Alan Stern
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and
+ * xHCI host controllers) have been resumed.
*/
- if (usb_is_intel_switchable_xhci(pdev))
- usb_enable_xhci_ports(pdev);
+
+ if (pdev-vendor == PCI_VENDOR_ID_INTEL)
+ usb_enable_intel_xhci_ports(pdev);
Short and sweet; I like it!
Alan Stern
would use phy1 or phy2, and the PHY
consumers would use host1 or host2.
Alan Stern
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resources get
deallocated? When the gadget disconnects from the host?
Alan Stern
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-by: Manjunath Goudar manjunath.gou...@linaro.org
Cc: Felipe Balbi ba...@ti.com
Cc: Arnd Bergmann a...@arndb.de
Cc: Greg KH g...@kroah.com
Cc: Alan Stern st...@rowland.harvard.edu
Cc: linux-usb@vger.kernel.org
V2:
-omap_ohci_clock_power(0) called in usb_hcd_omap_remove().
-Removed ohci_setup
-by: Manjunath Goudar manjunath.gou...@linaro.org
Cc: Anand Gadiyar gadi...@ti.com
Cc: Felipe Balbi ba...@ti.com
Cc: Arnd Bergmann a...@arndb.de
Cc: Greg KH g...@kroah.com
Cc: Alan Stern st...@rowland.harvard.edu
Cc: linux-usb@vger.kernel.org
V2:
-ohci_setup() removed because it is called in .reset
-by: Manjunath Goudar manjunath.gou...@linaro.org
Cc: Arnd Bergmann a...@arndb.de
Cc: Alan Stern st...@rowland.harvard.edu
Cc: Greg KH g...@kroah.com
Cc: linux-usb@vger.kernel.org
V2:
-Set non-standard fields in ohci_at91_hc_driver manually, rather than
relying on an expanded struct
before W90X900(W90P910)
can be booted with a multi-platform kernel
and an ehci driver that only works on one of them.
With the infrastructure added by Alan Stern in patch 3e0232039
USB: EHCI: prepare to make ehci-hcd a library module, we can
avoid this problem by turning a bus glue
not a layering violation for one region of the kernel to store
private data in a structure defined by another part of the kernel.
This happens all the time (e.g., dev_set_drvdata).
Alan Stern
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find plenty of references
for how to do it on Google, but it is time consuming and needs plenty
of disk space as well as a reasonably fast machine.
Alan Stern
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.
Alan Stern
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, this was simply meant to be a suggestion to show that it
is relatively easy to do what you need without using name or ID
strings.
Alan Stern
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.
Is this really the intended behavior? It doesn't seem right at all.
Alan Stern
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On Wed, 24 Jul 2013, Takashi Iwai wrote:
At Wed, 24 Jul 2013 10:41:43 -0400 (EDT),
Alan Stern wrote:
I have been studying the data_ep_set_params() function in
sound/usb/endpoint.c. This is the routine that calculates the number
of samples and I/O requests to keep on the USB hardware
of the one
Clemens sent earlier.)
Alan Stern
Index: usb-3.10/sound/usb/endpoint.c
===
--- usb-3.10.orig/sound/usb/endpoint.c
+++ usb-3.10/sound/usb/endpoint.c
@@ -575,6 +575,7 @@ static int data_ep_set_params(struct snd
);
}
In this case, I'm particularly considering what happens when
snd_usb_endpoint_implicit_feedback_sink(ep) is false.
Besides, what's the reason for allocating 10 URBs if you're not going
to submit more than 2 of them at a time?
Alan Stern
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, you should make sure that neither URB is
running. Probably the best way is to call usb_unlink_urb() for the
other URB whenever one gets an error.
Alan Stern
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On Wed, 24 Jul 2013, Laurent Bigonville wrote:
Le Tue, 23 Jul 2013 10:16:00 -0400 (EDT),
Alan Stern st...@rowland.harvard.edu a écrit :
On Tue, 23 Jul 2013, Laurent Bigonville wrote:
Hi,
This is probably a minor issue, but when plugin the Fitbit base
station dongle, I'm
into account?
Alan Stern
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On Wed, 24 Jul 2013, Felipe Balbi wrote:
Hi,
On Tue, Jul 23, 2013 at 12:53:53PM -0400, Alan Stern wrote:
I see. Doesn't the mass-storage gadget also use delayed status when
going into the _un_configured state?
no it doesn't, we bail out early if config number is zero, look
Cc: Arnd Bergmann a...@arndb.de
Cc: Alan Stern st...@rowland.harvard.edu
Cc: Greg KH g...@kroah.com
Cc: linux-usb@vger.kernel.org
V2:
-ohci_hcd_init() statements are removed,
because by default it is called in ohci_setup().
@@ -45,6 +58,7 @@ static int usb_hcd_ep93xx_probe(const struct
...@linaro.org
Cc: Arnd Bergmann a...@arndb.de
Cc: Greg KH g...@kroah.com
Cc: Alan Stern st...@rowland.harvard.edu
Cc: linux-usb@vger.kernel.org
V2:
-Changed ohci_hcd and pxa27x_ohci struct variable names.
1 ohci_hcd struct variable name is ohci.
2 pxa27x_ohci struct variable name
program on your computer sending a
command to the drive that it can't handle (SCSI INQUIRY command with a
transfer length of 512). It is not a kernel problem.
Alan Stern
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reveal
why this was not triggered on 3.9 and 3.10 as bad as on 3.11...
Do you know which program is the culprit? From the timing, it is
likely to be something that udev runs.
Alan Stern
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in practice.
The patch below fixes this problem and drastically simplifies the
calculation. How does it look?
Alan Stern
Index: usb-3.10/sound/usb/endpoint.c
===
--- usb-3.10.orig/sound/usb/endpoint.c
+++ usb-3.10/sound/usb
On Thu, 25 Jul 2013, Felipe Balbi wrote:
On Wed, Jul 24, 2013 at 02:01:27PM -0400, Alan Stern wrote:
On Wed, 24 Jul 2013, Felipe Balbi wrote:
Hi,
On Tue, Jul 23, 2013 at 12:53:53PM -0400, Alan Stern wrote:
I see. Doesn't the mass-storage gadget also use delayed status when
yesterday. I think it will fix this
problem.
Alan Stern
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Greg:
What's the status of your USB patch queue? I've seen a bunch of
notices about patches being applied -- is the queue empty yet?
I ask because of this:
http://marc.info/?l=linux-usbm=137356910824266w=2
which hasn't been merged yet.
Alan Stern
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On Thu, 25 Jul 2013, Greg KH wrote:
On Thu, Jul 25, 2013 at 11:34:22AM -0400, Alan Stern wrote:
Greg:
What's the status of your USB patch queue? I've seen a bunch of
notices about patches being applied -- is the queue empty yet?
No it isn't empty yet, I tried to pick out most
On Thu, 25 Jul 2013, James Stone wrote:
Please try the patch from here:
http://marc.info/?l=linux-usbm=137476385206265w=2
instead of the one I sent to you yesterday. I think it will fix this
problem.
Alan Stern
Perfect! All fixed!
Can you provide a usbmon trace
.
On the other hand, there's no real reason to reject it, and it could
end up helping people who want to test new USB devices. So...
Acked-by: Alan Stern st...@rowland.harvard.edu
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.
I really don't like adding stuff like this to the kernel if at all
possible.
Up to you. Still, I think bringing situations like this to people's
attention is a large part of what WARN_ON is intended for.
Alan Stern
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On Thu, 25 Jul 2013, James Stone wrote:
On Thu, Jul 25, 2013 at 7:26 PM, Alan Stern st...@rowland.harvard.edu wrote:
On Thu, 25 Jul 2013, James Stone wrote:
Please try the patch from here:
http://marc.info/?l=linux-usbm=137476385206265w=2
instead of the one I sent
On Thu, 25 Jul 2013, Felipe Balbi wrote:
On Thu, Jul 25, 2013 at 03:44:20PM -0400, Alan Stern wrote:
On Thu, 25 Jul 2013, Greg KH wrote:
On Tue, Jul 02, 2013 at 08:13:52PM -0700, Jack Pham wrote:
From: Manu Gautam mgau...@codeaurora.org
The USB Embedded High-speed Host
);
+MODULE_LICENSE(GPL);
Would it be a good idea to combine all the little do-nothing modules
like this into one single source file? Then adding a new device
would require only two things:
Change the help message for the Kconfig entry;
Add a line to the id_table.
Alan Stern
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))
flush_work(ohci-nec_work);
- ohci_usb_reset (ohci);
ohci_writel (ohci, OHCI_INTR_MIE, ohci-regs-intrdisable);
+ ohci_usb_reset(ohci);
free_irq(hcd-irq, hcd);
hcd-irq = 0;
Reviewed-by: Alan Stern st...@rowland.harvard.edu
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if no
media is present. Or at least, it shouldn't treat medium not present
responses as errors.
Alan Stern
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On Fri, 26 Jul 2013, Clemens Ladisch wrote:
Alan Stern wrote:
On Thu, 25 Jul 2013, James Stone wrote:
The only slight difference I can see is that maybe the 3.10 uses
slightly higher CPU load than 3.5 at the ridiculously low latency of
64 frames/period duplex.
With the new patch
...@linaro.org
Cc: Arnd Bergmann a...@arndb.de
Cc: Greg KH g...@kroah.com
Cc: Alan Stern st...@rowland.harvard.edu
Cc: linux-usb@vger.kernel.org
V2:
-Changed ohci_hcd and pxa27x_ohci struct variable names.
1 ohci_hcd struct variable name is ohci.
2 pxa27x_ohci struct variable name
[50138.525315] pci_pm_runtime_suspend():
hcd_pci_runtime_suspend+0x0/0x50 returns -16
[50138.536357] PM: Finishing wakeup.
In addition to my earlier comment, the patch below should be applied.
It will fix your immediate problem, although not in the best way.
Alan Stern
Index: usb-3.10/drivers/scsi
with 3.10.3. Dmesg filtered with 'hci'.
Each of you, please post a usbmon trace showing what happens when the
drive is plugged in.
Alan Stern
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underruns.
Alan Stern
Index: usb-3.10/drivers/usb/host/ehci-sched.c
===
--- usb-3.10.orig/drivers/usb/host/ehci-sched.c
+++ usb-3.10/drivers/usb/host/ehci-sched.c
@@ -1388,7 +1388,7 @@ iso_stream_schedule (
struct
On Sat, 27 Jul 2013, Stuart Foster wrote:
On 07/27/13 15:58, Alan Stern wrote:
On Sat, 27 Jul 2013, Stuart Foster wrote:
Hi,
I have started having problems with an external USB 3 diskdrive, the
problems started when I moved from the 3.10.2 kernel to 3.10.3.
The machine is a ASUS
. The optimal number of URBs is actually quite tricky to
calculate. I'll send out another patch in a few days.
Alan Stern
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On Sat, 27 Jul 2013, Stuart Foster wrote:
On 07/27/13 20:34, Alan Stern wrote:
On Sat, 27 Jul 2013, Stuart Foster wrote:
On 07/27/13 15:58, Alan Stern wrote:
On Sat, 27 Jul 2013, Stuart Foster wrote:
Hi,
I have started having problems with an external USB 3 diskdrive
On Mon, 29 Jul 2013, Oliver Neukum wrote:
On Fri, 2013-07-26 at 16:31 -0400, Alan Stern wrote:
In addition to my earlier comment, the patch below should be applied.
It will fix your immediate problem, although not in the best way.
Alan,
I think your diagnosis is correct
understand why not; doesn't queue_pending_output_urbs() make the packet
sizes match the sizes from the corresponding feedback endpoint?
I'd appreciate any advice you can offer.
Alan Stern
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On Mon, 29 Jul 2013, Martin K. Petersen wrote:
Alan == Alan Stern st...@rowland.harvard.edu writes:
Alan,
Alan It was introduced by commit 98dcc2946adb (SCSI: sd: Update WRITE
Alan SAME heuristics). This commit adds a call to scsi_get_vpd_page()
Alan in sd_read_write_same() without
[ 290.192146] usb 6-1.7: reset high-speed USB device number 3 using ehci-pci
[ 321.167769] usb 6-1.7: reset high-speed USB device number 3 using ehci-pci
See this email thread:
http://marc.info/?l=linux-usbm=137503976012984w=2
Alan Stern
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On Sun, 28 Jul 2013, James Stone wrote:
On Sat, Jul 27, 2013 at 6:45 PM, Alan Stern st...@rowland.harvard.edu wrote:
On Sat, 27 Jul 2013, James Stone wrote:
OK. So this seems to have solved the starting jack at low latencies
problem, but I am still getting sporadic cannot submit urb (err
On Mon, 29 Jul 2013, Marc Meledandri wrote:
On Mon, Jul 29, 2013 at 11:24 AM, Alan Stern st...@rowland.harvard.edu
wrote:
On Sun, 28 Jul 2013, Marc Meledandri wrote:
I've hit a USB regression from 3.10.2 (working) - 3.10.3 (busted) with my
Panasonic DMC-ZS3 camera. I can no longer
On Mon, 29 Jul 2013, Clemens Ladisch wrote:
Alan Stern wrote:
Clemens remarked some time ago that keeping the queue full would be
trivial, if only he knew how full it needed to be. The answer to that
is given above. I have been trying to make the appropriate changes,
but I'm
On Mon, 29 Jul 2013, Daniel Mack wrote:
On 29.07.2013 20:20, Alan Stern wrote:
data_ep_set_params() checks snd_usb_endpoint_implicit_feedback_sink()
in three places. It looks like only the second place is correct.
Can you verify whether the other two are right, and explain to me
, it wouldn't be violating
the high speed limitation of 63 endpoints per micro-frame.
The limitation you are referring to (Table 5-8 in the spec) is for
interrupt transfers to high-speed devices. It does not apply to
interrupt transfers to full-speed devices.
Alan Stern
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EHCI controllers,
and you can get more by adding PCI cards.
Thank you for your help. I'm trying to get a better understanding of
the USB limitations, so our design does not fail as the system
expands.
You're welcome.
Alan Stern
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Alan Stern
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On Tue, 30 Jul 2013, Philipp Dreimann wrote:
On Mon, Jul 29, 2013 at 7:04 PM, Alan Stern st...@rowland.harvard.edu wrote:
It turns out I was probably wrong. Take a look at this message:
http://marc.info/?l=linux-scsim=137511040432420w=2
The patch in that email may fix your
On Tue, 30 Jul 2013, Oliver Neukum wrote:
On Mon, 2013-07-29 at 10:21 -0400, Alan Stern wrote:
On Mon, 29 Jul 2013, Oliver Neukum wrote:
On Fri, 2013-07-26 at 16:31 -0400, Alan Stern wrote:
In addition to my earlier comment, the patch below should be applied.
It will fix
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