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Stall due to babble when reading card ATR from CCID device using UHCI


From: Lenthamre Johan
Subject: Stall due to babble when reading card ATR from CCID device using UHCI
Date: Thu, 3 Nov 2011 10:04:47 +0000

Hi,

When reading card ATR from a CCID device (RDR_to_PC_DataBlock), the bulk-in 
endpoint is stalled due to babble. I still get the complete ATR though. I've 
successfully issued other commands, such as PC_to_RDR_GetSlotStatus and read 
back the result ok. The reader is a 2.0 device plugged into a 1.1 controller 
using GRUB's UHCI driver. The TD status is 0x18500009; stall + babble. I am not 
really sure where to go from here or where to start looking. Any hints are 
appreciated.

Clear halt doesn't solve the issue.

BR

/Johan

---------------------------------------
Johan Lenthamre
Software Engineer
Command and Control Systems Division
Security and Defence Solutions
Telephone: +46 8 5808 4818
Mobile: +46 73 437 4818
address@hidden 
Saab
Nettovägen 6
SE-175 88 Järfälla
www.saabgroup.com 
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