forked from espressif/esp-modbus
drop uart ll driver fix: soc: prevent speculative reads from FIFO at -O2 optimization (new compiler fixes this issue) * Original commit: espressif/esp-idf@b28b62b194
drop uart ll driver fix: soc: prevent speculative reads from FIFO at -O2 optimization (new compiler fixes this issue) * Original commit: espressif/esp-idf@b28b62b194