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If test target qemu machine hangs completely, dump_target() calls over serial console are taking a long time to time out, possibly for every failing ssh command execution and a lot of test cases, and same with dump_monitor(). Instead of trying for ever, count errors and after 5 stop trying to dump_target() and dump_monitor() completely. These help to end testing earlier when a test target is completely deadlocked and all ssh, serial and QMP communication with it are failing. (From OE-Core rev: 91bc1e03bc990c527d8aadbdcd7bf97217db124e) Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org> Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> (cherry picked from commit d9ad0a055abba983c6cee1dca4d2f0a8a3c48782) Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>