HX5449: DF-5449 uvscom cfg-chain stall harness, hz=100, 4 reqs/open-chain, 2 reqs/close-chain, 0 ms/request
HX5449: cfg-open task: enter, 1 x 1000 ms READ_STATUS + hz/10 pause
HX5449[A]: closer: HUPCL line task + queue cfg_close + usb_proc_mwait() (uninterruptible, usb_serial.c:671-672) behind the open chain
HX5449: cfg-open task: leave
HX5449: line-state task: enter (DTR+RTS set: 2 x LINE_CTL (uvscom.c:481,496))
HX5449: line-state task: leave
HX5449: line-state task: enter (BREAK clear: 1 x LINE_CTL (uvscom.c:511))
HX5449: line-state task: leave
HX5449: HUPCL line task: enter, 1 x 1000 ms LINE_CTL write (uvscom.c:481)
HX5449: HUPCL line task: leave
HX5449: cfg-close task: enter, 1 x 1000 ms SHUTDOWN write
HX5449: cfg-close task: leave
HX5449[A]: closer: unblocked  ELAPSED=5932 ms
HX5449: cfg-open task: enter, 1 x 250 ms READ_STATUS + hz/10 pause (fix: abort on error)
HX5449[B]: closer: HUPCL line task + queue cfg_close + usb_proc_mwait() (uninterruptible, usb_serial.c:671-672) behind the open chain
HX5449: cfg-open task: leave
HX5449: line-state task: enter (DTR+RTS set: 2 x LINE_CTL (uvscom.c:481,496))
HX5449: line-state task: enter (BREAK clear: 1 x LINE_CTL (uvscom.c:511))
HX5449: line-state task: leave
HX5449: HUPCL line task: enter, 1 x 250 ms LINE_CTL write (uvscom.c:481)
HX5449: HUPCL line task: leave
HX5449: cfg-close task: enter, 1 x 250 ms SHUTDOWN write
HX5449: cfg-close task: leave
HX5449[B]: closer: unblocked  ELAPSED=1285 ms
HX5449: harness complete