[Pcsclite-cvs-commit] r6631 - /trunk/Drivers/ccid/src/ccid_usb.c
rousseau at users.alioth.debian.org
rousseau at users.alioth.debian.org
Thu May 16 07:40:23 UTC 2013
Author: rousseau
Date: Thu May 16 07:40:23 2013
New Revision: 6631
URL: http://svn.debian.org/wsvn/pcsclite/?sc=1&rev=6631
Log:
ReadUSB: Zero Length Packet (ZLP) support
The Gemalto IDBridge CT30 and IDBridge K30 readers may send
a ZLP after some commands when connected on a USB3 bus
Modified:
trunk/Drivers/ccid/src/ccid_usb.c
Modified: trunk/Drivers/ccid/src/ccid_usb.c
URL: http://svn.debian.org/wsvn/pcsclite/trunk/Drivers/ccid/src/ccid_usb.c?rev=6631&op=diff
==============================================================================
--- trunk/Drivers/ccid/src/ccid_usb.c (original)
+++ trunk/Drivers/ccid/src/ccid_usb.c Thu May 16 07:40:23 2013
@@ -706,6 +706,15 @@
return STATUS_UNSUCCESSFUL;
}
+ if (0 == actual_length)
+ {
+ /* Zero Length Packet */
+ /* The Gemalto IDBridge CT30 and IDBridge K30 readers may send
+ * a ZLP after some commands when connected on a USB3 bus */
+ DEBUG_INFO("ZLP detected. read again!");
+ goto read_again;
+ }
+
*length = actual_length;
DEBUG_XXD(debug_header, buffer, *length);
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