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[Ludovic Rousseau <ludovic.rousseau@xxxxxxxxx>]

pkrishn6, libccid is using libusb. libusb is using a generic USB kernel
driver. I do not remember its name.

Another option is to add an option to tell pcscd to remove a USB reader.
Maybe you can send a fake "unplug" udev event.

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https://bugs.launchpad.net/bugs/787451

Title:
  pcscd spams to syslog and kern.log after enabling smartcard reader in
  VMWare Workstation

Status in “pcsc-lite” package in Ubuntu:
  Confirmed

Bug description:
  Info:
  Ubuntu 11.04 amd64

  pcscd:
    Installed: 1.7.0-2ubuntu2
    Candidate: 1.7.0-2ubuntu2
    Version table:
   *** 1.7.0-2ubuntu2 0
          500 http://ru.archive.ubuntu.com/ubuntu/ natty/universe amd64 Packages
          100 /var/lib/dpkg/status

  libccid:
    Installed: 1.4.2-2
    Candidate: 1.4.2-2
    Version table:
   *** 1.4.2-2 0
          500 http://ru.archive.ubuntu.com/ubuntu/ natty/universe amd64 Packages
          100 /var/lib/dpkg/status

  libpcsclite1:
    Installed: 1.7.0-2ubuntu2
    Candidate: 1.7.0-2ubuntu2
    Version table:
   *** 1.7.0-2ubuntu2 0
          500 http://ru.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
          100 /var/lib/dpkg/status

   pcscd --version
  pcsc-lite version 1.7.0.
  Copyright (C) 1999-2002 by David Corcoran <corcoran@xxxxxxxxxxxx>.
  Copyright (C) 2001-2010 by Ludovic Rousseau <ludovic.rousseau@xxxxxxx>.
  Copyright (C) 2003-2004 by Damien Sauveron <sauveron@xxxxxxxx>.
  Report bugs to <muscle@xxxxxxxxxxxxxxxxxxxx>.
  Enabled features: Linux x86_64-pc-linux-gnu serial usb libudev usbdropdir=/usr/lib/pcsc/drivers ipcdir=/var/run/pcscd configdir=/etc/reader.conf.d

  smart card is JCOP 31.

  VMWare Workstation version is 7.1.4 build-385536

  Steps for bug reproducing:
  1) Launch VMWare OS. In my case this is Windows 7 but I guess it doesn't matter.

  2) Connect SmartCard reader to VMWare OS.  Reader's model is SCM
  SCR3110. This is supported by libccid 1.4.2.

  3) At this moment, syslog is spamed by pcscd process. The following strings can be found in syslog:
  May 24 13:10:02 computer-name pcscd: ccid_usb.c:618:WriteUSB() write failed (8/2): -1 Device or resource busy
  May 24 13:10:02 computer-name pcscd: ifdwrapper.c:346:IFDStatusICC() Card not transacted: 612
  May 24 13:10:02 computer-name pcscd: eventhandler.c:303:EHStatusHandlerThread() Error communicating to: SCM SCR 3310 [CCID Interface] (21120818206778) 00 00
  May 24 13:10:02 computer-name pcscd: ccid_usb.c:618:WriteUSB() write failed (8/2): -1 Device or resource busy
  May 24 13:10:02 computer-name pcscd: ifdwrapper.c:346:IFDStatusICC() Card not transacted: 612
  May 24 13:10:02 computer-name pcscd: eventhandler.c:303:EHStatusHandlerThread() Error communicating to: SCM SCR 3310 [CCID Interface] (21120818206778) 00 00
  May 24 13:10:02 computer-name pcscd: ccid_usb.c:618:WriteUSB() write failed (8/2): -1 Device or resource busy
  May 24 13:10:02 computer-name pcscd: ifdwrapper.c:346:IFDStatusICC() Card not transacted: 612
  May 24 13:10:02 computer-name pcscd: eventhandler.c:303:EHStatusHandlerThread() Error communicating to: SCM SCR 3310 [CCID Interface] (21120818206778) 00 00
  May 24 13:10:02 computer-name pcscd: ccid_usb.c:618:WriteUSB() write failed (8/2): -1 Device or resource busy
  May 24 13:10:02 computer-name pcscd: ifdwrapper.c:346:IFDStatusICC() Card not transacted: 612
  May 24 13:10:02 computer-name pcscd: eventhandler.c:303:EHStatusHandlerThread() Error communicating to: SCM SCR 3310 [CCID Interface] (21120818206778) 00 00
  May 24 13:10:02 computer-name pcscd: ccid_usb.c:618:WriteUSB() write failed (8/2): -1 Device or resource busy
  ....

  4) The log size rapidly increases. It takes several minutes to reach
  20 Gb.

  5) After disconnecting smartcard reader, the following string can be found in syslog:
  ...
  May 24 13:12:41 computer-name kernel: [75680.065939] usb 8-2: usbfs: process 2956 (pcscd) did not claim interface 0 before use
  May 24 13:12:41 computer-name kernel: [75680.065996] usb 8-2: usbfs: process 2956 (pcscd) did not claim interface 0 before use
  May 24 13:12:41 computer-name kernel: [75680.066000] usb 8-2: usbfs: process 2956 (pcscd) did not claim interface 0 before use
  May 24 13:12:41 computer-name kernel: [75680.066057] usb 8-2: usbfs: process 2956 (pcscd) did not claim interface 0 before use
  May 24 13:12:41 computer-name kernel: [75680.066211] usb 8-2: usbfs: process 2956 (pcscd) did not claim interface 0 before use

  Also this messages are written in kern.log

  6) The problem is solved by restarting of computer.

  I cannot attach syslog and kern.log due to huge size.

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