This reverts commit17438217a6on request of Linus Walleij: Greg can you please drop or revert commit17438217a6"serial: pl011: use DMA RX polling by default" from the TTY tree until this has been sorted out? Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>