Hi, I messed up the spi transfer stuff in at86rf230 driver. Some people reported issues with half-duplex and 3wire spi controllers. The issue is that we use only one tranfer buffer for one message for tx and rx. I thought the spi subsystem can deal with that and just not overwrite rx buf position with tx buf position on all other types. No, what we need to do is: spi_message_add_tail($TX_ONLY_PART, &state->msg); spi_message_add_tail($RX_ONLY_PART, &state->msg); and do TX only and then afterwards RX only. Seems that is what the SPI subsystem wants then..., otherwise it will fail at [0]. In at86rf230/mrf24j40 only low-level async setup is affected. I hope regmap can deal with half-duplex/3wire stuff. Just that everybody is aware about this issue now. :-) - Alex [0] http://elixir.free-electrons.com/linux/latest/source/drivers/spi/spi.c#L2610 -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
