OK... I don't know enough about USB, and there is no documentation out there...
I've removed the reset (which should not be used per the few documents I found).
And found that if I remove the following:
ifd_sysdep_usb_set_interface(dev,
params->usb.interface,
params->usb.altsetting))
>From usb_set_params, it works correctly, no matter how many times I
run the ifdhandler without removing the device.
Anyone know what does this call do? and why it causes next ifdhandler
run to fail communicating with the device?
I also tried to use USBDEVFS_CLEAR_HALT and USBDEVFS_RESETEP but these
do not release the device as well...
So the only solution is USBDEVFS_RESET, which is bad, or remove the
USBDEVFS_SETINTERFACE call.
I could not find calls to RESET, RESETEP and SETINTERFACE in libusb-1,
so I guess normal applications should not use these?
Alon
On 12/31/08, Alon Bar-Lev <alon.bar...@gmail.com> wrote:
> On 12/31/08, Alon Bar-Lev <alon.bar...@gmail.com> wrote:
> > > another GetSlotStatus message. The attached patch catches this specific
> > > error and interprets it correctly. (Actually, there are two patches. One
> > > takes the IFD_ERROR_NO_CARD error from ccid_command and asserts that
> means
> > > the card is absent. The other ignores the IFD_ERROR_NO_CARD error and
> parses
> > > the result as if no error had been reported. Either should work)
> >
>
> > Here is the same without the reset, notice that the GetSlotStatus
> > message timed out.
>
>
> I reproduced this issue with trunk, this has nothing to do with any of
> my changes...
>
> Here is the log, notice the timeout of the first GetSlotStatus.
> ---
> # src/ifd/ifdhandler -dddddd -F -H ccid usb /dev/bus/usb/002/033
>
> Debug: ifd_open: trying to open c...@usb:/dev/bus/usb/002/033
> Debug: ifd_usb_control: usb req type=x80 req=x06 val=x0100 ind=x0000 len=18
> Debug: ifd_usb_control: recv 12 01 10 01 00 00 00 08 c3 0d 04 10 05
> 05 01 02 00 01
> Debug: ifd_usb_control: usb req type=x80 req=x06 val=x0200 ind=x0000 len=8
> Debug: ifd_usb_control: recv 09 02 5d 00 01 01 06 a0
> Debug: ifd_usb_control: usb req type=x80 req=x06 val=x0200 ind=x0000 len=93
> Debug: ifd_usb_control: recv 09 02 5d 00 01 01 06 a0 32 09 04 00 00
> 03 0b 00 00 04 36 21 10 01 00 07 03 00 00 00 a0 0f 00 00 a0 0f 00 00
> 00 00 2a 00 00 15 16 05 00 00 fc 00 00 00 00 00 00 00 00 00 00 00 30
> 03 01 00 0f 01 00 00 00 00 00 00 00 01 07 05 81 03 08 00 ff 07 05 02
> 02 40 00 00 07 05 82 02 40 00 00
> Debug: skipped 1 class/vendor specific interface descriptors
> Debug: usb_set_params: called. config xffffffff ifc x00 eps x02/x82
> Debug: ccid_open_usb: Accepted 0dc3:1004 with features 0x10330 and protocols
> 0x3
>
> Debug: ccid_activate: called.
>
> Debug: ifd_usb_begin_capture: usb capture type=1 ep=x81 maxpacket=8
>
> Debug: usb_submit_urb: submit urb 0x94daa30
>
> Debug: ifd_usb_capture: called, timeout=100 ms.
> Debug: ifd_usb_capture: usb capture: Command timed out
>
> Debug: ccid_command: sending: 65 00 00 00 00 00 00 00 00 00
> Debug: usb_send: usb send to=x02
> Debug: usb_send: send 65 00 00 00 00 00 00 00 00 00
> Error: usb_bulk failed: Connection timed out
>
> Debug: ifd_usb_begin_capture: usb capture type=1 ep=x81 maxpacket=8
>
> Debug: usb_submit_urb: submit urb 0x94daa30
>
> Debug: ifd_usb_capture: called, timeout=100 ms.
>
> Debug: ifd_sysdep_usb_capture: usb reapurb: len=2
> Debug: usb_submit_urb: submit urb 0x94daa30
> Debug: ifd_usb_capture: usb capture: recv 50 03
> ---
>
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