[Bug 202515] Bluetooth LE Extended Connect returning Command Disallowed

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https://bugzilla.kernel.org/show_bug.cgi?id=202515

--- Comment #13 from Mathias Tillman (master.homer@gmail.com) ---
Created attachment 281053
  --> https://bugzilla.kernel.org/attachment.cgi?id=281053&action=edit
Check if ext scanning and ext params are supported independently

As a test I created a patch that removes the set ext scanning params check, and
instead only checks it when actually sending the appropriate command (which is
once in the code).

It's working perfectly now, and it's using the ext scan command, instead of the
regular scan command - which is what caused the Command Disallowed error.

Like I said before, I'm not too familiar with how bt le works, but is there any
case where the set ext scanning params would be a requirement for ext scanning
to work? Of course, working around buggy firmware that sometimes reports a
command as supported, and other times not is far from ideal - but seeing as it
is working for me now, I can't see any reason why the commands should depend on
each other.

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