On Mon, 4 Nov 2013, Alan Stern wrote:
> On Mon, 4 Nov 2013, Prasad Koya wrote:
>
> > Hi
> >
> > I'm attaching dmesg with old_scheme_first=1 and
> > CONFIG_USB_STORAGE_DEBUG enabled. I compiled code with
> > old_scheme_first set to 1. I see that it doesn't do get descriptor
> > early in the loop
On Mon, 4 Nov 2013, Prasad Koya wrote:
> Hi
>
> I'm attaching dmesg with old_scheme_first=1 and
> CONFIG_USB_STORAGE_DEBUG enabled. I compiled code with
> old_scheme_first set to 1. I see that it doesn't do get descriptor
> early in the loop so it doesn't run into khubd time out. But as I
> menti
Hi
I'm attaching dmesg with old_scheme_first=1 and
CONFIG_USB_STORAGE_DEBUG enabled. I compiled code with
old_scheme_first set to 1. I see that it doesn't do get descriptor
early in the loop so it doesn't run into khubd time out. But as I
mentioned earlier usb-storage runs into some sort of error
On Sat, 2 Nov 2013, Prasad Koya wrote:
> Hi
>
> I didn't have luck reproducing with both CONFIG_USB_DEBUG and
> CONFIG_USB_STORAGE_DEBUG. I could reproduce with each of them enabled
> separately. Am attaching the whole dmesg of both as zip files. If I
> should send them in different format, pleas
Hi
I didn't have luck reproducing with both CONFIG_USB_DEBUG and
CONFIG_USB_STORAGE_DEBUG. I could reproduce with each of them enabled
separately. Am attaching the whole dmesg of both as zip files. If I
should send them in different format, please let me know. I didn't see
anything warnings or err
On Thu, 31 Oct 2013, Prasad Koya wrote:
> I tried usbmon before forcing crash:
> As this USB is on bus 1, I tried below:
>
> cat /sys/kernel/debug/usb/usbmon/1u
>
> I didn't see anything till I copied a file or did some activity on it.
> While cat'ing above, I copied a file to that flash with d
I tried usbmon before forcing crash:
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 5
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 2.06
S: Manufacturer=Linux 2.6.32.28 ehci_hcd
S: Pro
On Wed, 30 Oct 2013, Prasad Koya wrote:
> Hi
>
> Here are dmesg's with old_scheme_first=1 and where it took about 20s
> for usb-storage to start using this device. Is there a way I can
> enable debugs from usb-storage to see what it is doing in that 20s
> gap. The device in question is at usb1-3
Hi
Here are dmesg's with old_scheme_first=1 and where it took about 20s
for usb-storage to start using this device. Is there a way I can
enable debugs from usb-storage to see what it is doing in that 20s
gap. The device in question is at usb1-3 (sdb), manufactured by SMART.
Thank you.
[1.62
Hi
Thanks for suggesting the alternatives.
With CONFIG_USB_DEBUG and CONFIG_USB_MON enabled I see below messages
related to the USB device in question. This is not reproducible
easily. I'll try the old_scheme_first. We are seeing this issue with
flash that is internal to our box and not accessibl
On Tue, 29 Oct 2013, Prasad Koya wrote:
> Thanks for looking into the patch. Am fairly new to the USB subsystem.
> You are right. There is a possibility of going into infinite loop with
> hub_port_init -> usb_reset_device -> usb_reset_and_verify_device ->
> hub_port_init.
>
> We are trying to ach
On Mon, 28 Oct 2013, Prasad Koya wrote:
> Hi
>
> I tried resetting usb device when it gets ETIMEDOUT during get
> descriptor. On second retry, I don't see timeout. Please see this
> patch:
>
> Index: linux-3.4/drivers/usb/core/hub.c
> =
Hi
I tried resetting usb device when it gets ETIMEDOUT during get
descriptor. On second retry, I don't see timeout. Please see this
patch:
Index: linux-3.4/drivers/usb/core/hub.c
===
--- linux-3.4.orig/drivers/usb/core/hub.c
+++ linu
On Fri, 25 Oct 2013, Prasad Koya wrote:
> Resending in plain-text.
>
> On Thu, Oct 24, 2013 at 11:06 PM, Prasad Koya wrote:
> > Hi
> >
> > I tried with even unmounting the USB before forcing panic and I see same
> > time out while getting device descriptor.
A better test would be to unbind usb-
Resending in plain-text.
On Thu, Oct 24, 2013 at 11:06 PM, Prasad Koya wrote:
> Hi
>
> I tried with even unmounting the USB before forcing panic and I see same
> time out while getting device descriptor.
>
> From debugs, I see that the portstatus is 0x501 to start with ie,
> (high-speed attached,
On Tue, 22 Oct 2013, Prasad Koya wrote:
> Hi
>
> I have a USB subsystem question. If there is a specific mailing list for
> USB queries I could post it there.
The specific mailing list for USB queries is
. It's listed in the kernel's MAINTAINERS
file.
> I'm seeing this problem with both 2.6.3
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