xilinx_spips: Don't set TX FIFO UNDERFLOW at cmd done
Don't set TX FIFO UNDERFLOW interrupt after transmitting the commands. Also update interrupts after reading out the interrupt status. Signed-off-by: NFrancisco Iglesias <frasse.iglesias@gmail.com> Acked-by: NAlistair Francis <alistair.francis@xilinx.com> Reviewed-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com> Tested-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 20171126231634.9531-12-frasse.iglesias@gmail.com Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
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