[PATCH] telit: enable 'SIM ready' notifications with #QSS=2

[Carlo Lobrano]

​> In your case with the Telit modem and QSS:3; if we decide that it's
> not worth waiting for QSS:3 because it takes too long and for our
> purposes we can use it much earlier, then we could do the per-step
> retries on SIM busy errors.

The problem here is that, according to my tests, even if we try to get this
info earlier, polling at some intervals, we end up waiting the same amount
of time.

> The idea of updating in the background and letting the remaining logic
> to flow is a bit anarchic, as the user of the API cannot know when the
> property values are done populated.

Yes, you're right, I wasn't thinking about that.
I've got the idea of dropping this change, actually. As I said, the goal
was to have some logic to recover several situations of "sim busy", but I
couldn't make a scalable solution that isn't tailored strictly around this
specific case and, at the end of the day, it doesn't seem to provide a real
improvement, specially if compared to the increased complexity. Finally,
this issue affect only the SIMs of a specific vendor and the most important
information (SIM and PUK) are always retrieved correctly.
​
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