Re: [Qemu-devel] [PATCH] ccid: Fix dwProtocols advertisement of T=0

[Gerd Hoffmann]

On Fri, Apr 20, 2018 at 02:32:19PM -0400, Jason Andryuk wrote:
> Commit d7d218ef02d87c637d20d64da8f575d434ff6f78 attempted to change
> dwProtocols to only advertise support for T=0 and not T=1.  The change
> was incorrect as it changed 0x00000003 to 0x00010000.
> 
> lsusb -v in a linux guest shows:
> "dwProtocols         65536  (Invalid values detected)", though the
> smart card could still be accessed.  Windows 7 does not detect inserted
> smart cards and logs the the following Error in the Event Logs:
> 
>     Source: Smart Card Service
>     Event ID: 610
>     Smart Card Reader 'QEMU QEMU USB CCID 0' rejected IOCTL SET_PROTOCOL:
>     Incorrect function. If this error persists, your smart card or reader
>     may not be functioning correctly
> 
>     Command Header: 03 00 00 00
> 
> Setting to 0x00000001 fixes the Windows issue.

Added to usb queue.

thanks,
  Gerd