On Sat, May 23, 2020 at 09:35:06AM +0800, dillon min wrote:

-       if (ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) {
+       if ((ctlr->flags & (SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX)) &&
+               !(msg->spi->mode & SPI_3WIRE)) {
                max_tx = 0;
                max_rx = 0;

for my board, lcd panel ilitek ill9341 use 3wire mode, gyro l3gd20 use
simplex rx mode.
it's has benefits to l3gd20, no impact to ili9341.

if it's fine to spi-core, i will include it to my next submits.

Yes, looks reasonable.