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further issues with O2MICRO OZ776 (0b97:7772) #18
Recently I was confronted with serious issues regarding the reader within Fujitsu Lifebook E754.
Simplified: I was not able to read back some x509 certificates with it. (And other security tools errored while using it.)
Hereby I want to suggest my patch making the reader fully usable.
This reader seems bogous, again: This time it crashes randomly during normal communication. Requests then weren't answered anymore and bulk reads simply time out. After reset, resync or powerdown the reader becomes available again. However most operations are disruped by this - the reader isn't usable in principle. This observation is very dependend of the smartcard. (Perhaps quality grade during production?) Even cards of same batch trigger different errors within applications. But it seems all are caused by an libusb-timeout error -7. This patch resolves all observed disruptions and make the reader usable in production once again. Signed-off-by: Stephan Baerwolf <email@example.com>
See also the discussion "further issues with O2MICRO OZ776 (0b97:7772)" on the Pcsclite-muscle mailing list at https://lists.alioth.debian.org/pipermail/pcsclite-muscle/Week-of-Mon-20160509/000588.html