diff -r a179b74831c9 -r c1f20ce4abcf kernel/eka/drivers/pbus/mmc/session.cpp
--- a/kernel/eka/drivers/pbus/mmc/session.cpp	Thu Aug 19 11:14:22 2010 +0300
+++ b/kernel/eka/drivers/pbus/mmc/session.cpp	Tue Aug 31 16:34:26 2010 +0300
@@ -464,6 +464,10 @@
 		return KErrNotReady;
 	    }
 
+	// Save the callers card pointer as some state machines 
+	// (e.g. ECIMLockUnlock, ECIMInitStackAfterUnlock) can change it
+	SaveCard();
+
 	SetupCIMControl(iSessionID);
 
 	iStackP->Add(this);