Patch for scdaemon and reader/smartcard combo devices

[NIIBE Yutaka]

2011-01-21 10:09, Grant Olson wrote:
> @@ -1412,10 +1413,10 @@ reset_pcsc_reader_wrapped (int slot)
>      {
>        log_error ("PC/SC RESET failed: %s (0x%lx)\n",
>                   pcsc_error_string (err), err);
> -      /* If the error code is no smart card, we should not considere
> +      /* If the error code is no smart card or no reader, we should not
> conside
>           this a major error and close the wrapper.  */
>        sw = pcsc_error_to_sw (err);
> -      if (err == PCSC_E_NO_SMARTCARD)
> +      if (err == PCSC_E_NO_SMARTCARD || err == PCSC_E_UNKNOWN_READER)
>          return sw;
>        goto command_failed;
>      }

It seems that I have found an issue for this change.

Today, I need to test two Gnuk Tokens, and I tried your patched version
of scdaemon.  The tokens are:

	(A) STM8S Discovery Kit

	(B) CQ STARM

When I insert (A) and use it, then remove it and insert (B).

It doesn't work.  Here is the log of scdaemon:
--------------------
2011-01-21 12:41:52 scdaemon[11689] PC/SC RESET failed: unknown reader (0x80100009)
2011-01-21 12:41:52 scdaemon[11689] DBG: send apdu: c=00 i=A4 p1=00 p2=0C lc=2 le=-1 em=0
2011-01-21 12:41:52 scdaemon[11689] PC/SC RESET failed: unknown reader (0x80100009)
2011-01-21 12:41:52 scdaemon[11689] apdu_send_simple(0) failed: no reader
--------------------

Removing (B) and inserting (A) again, it works.

But I have no way to use (B) any more without killing scdaemon, and leting gpg-agent
learn for (B) to use (B).  But this time, I have no way to use back to (A)...
--