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- Enable the commented out locking in fd_probe(). The worker thread should not be running yet (even after these changes), but better to be safe than sorry. - Defer starting the worker thread until after the child drives have been probed. The worker thread startup is moved into a fdc_start_worker() thread that the various front ends call at the end of attach. As a side effect this fixes a few edge cases that weren't shutting down the worker thread if attach encountered a late failure. - When executing the initial reset requested by attach in the worker thread, use DELAY() instead of a tsleep() if cold is set. Tested by: Howard Su <howard0su@gmail.com> Sponsored by: Netflix
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