On Thu, Apr 11, 2019 at 06:42:33PM +0200, Noralf Trønnes wrote:

> +++ b/drivers/spi/spi.c
> @@ -1299,6 +1299,11 @@ static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread)
>  
>  	trace_spi_message_start(ctlr->cur_msg);
>  
> +	ret = spi_split_transfers_maxsize(ctlr, ctlr->cur_msg, ctlr->max_dma_len,
> +					  GFP_KERNEL | GFP_DMA);
> +	if (ret)
> +		goto out;
> +

We should do any message maipulation in __spi_validate() with all the
other mainpulation, the message pump should just be pushing messages
out.