Regression from 2.6.21 to 2.6.22 and above

Regression from 2.6.21 to 2.6.22 and above

[Stefan Scheler]

Hello,

my Kobil KAAN Professional (USB variant) smartcard reader stopped
working when upgrading from 2.6.21 to 2.6.22 (and 2.6.23). Not working
means that the latest libct.so supplied from Kobil is segfaulting when
trying to access the device. But as far as I can see the kobil_sct
driver itself didn't change from 2.6.21 to 2.6.22. Any ideas what is
going on here?

Thanks in advance. I will provide additional information if needed.

-- 
Stefan Scheler

Re: Regression from 2.6.21 to 2.6.22 and above

[Chuck Ebbert]

On 10/11/2007 06:41 AM, Stefan Scheler wrote:
> Hello,
> 
> my Kobil KAAN Professional (USB variant) smartcard reader stopped
> working when upgrading from 2.6.21 to 2.6.22 (and 2.6.23). Not working
> means that the latest libct.so supplied from Kobil is segfaulting when
> trying to access the device. But as far as I can see the kobil_sct
> driver itself didn't change from 2.6.21 to 2.6.22. Any ideas what is
> going on here?
> 
> Thanks in advance. I will provide additional information if needed.
> 

Try turning off USB autosuspend by adding the kernel option
"usbcore.autosuspend=-1". Or if your USB is modular, add "autosuspend=-1"
to the module parameters.

Re: Regression from 2.6.21 to 2.6.22 and above

[Stefan Scheler]

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> Try turning off USB autosuspend by adding the kernel option
> "usbcore.autosuspend=-1". Or if your USB is modular, add "autosuspend=-1"
> to the module parameters.

Doesn't help. You also might have a look at the linux-usb-devel list. I
posted a couple of logs there.

-- 
Stefan Scheler


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