tree b5cd02184034f6bc8380202c7c7b51af20da5a86
parent a951c4ae025df33b8bc585430a20b014fc3fb695
author Eric Wild <ewild@sysmocom.de> 1628388878 +0200
committer Eric Wild <ewild@sysmocom.de> 1628388878 +0200

cardem: fix spurious NULL bytes during transfers

The "wait time extension timer" was apparently not being reset during
normal tx operations, which led to occasional NULL (0x60) bytes getting
injected into transfers, which in turn led to more tx bytes than what
the reader side expects...

The odd thing is that this was only noticeable with high baud rates,
probably due to the very long default WT of 9600 ETU, and even then only
because it led to weird ngff modem resets after benign transfers.

Change-Id: I15b0b83b7d93b8e5589f3640bd6eb2fc82f93394
Related: SYS#5553