name: spi_transfer_start
ID: 589
format:
	field:unsigned short common_type;	offset:0;	size:2;	signed:0;
	field:unsigned char common_flags;	offset:2;	size:1;	signed:0;
	field:unsigned char common_preempt_count;	offset:3;	size:1;	signed:0;
	field:int common_pid;	offset:4;	size:4;	signed:1;

	field:int bus_num;	offset:8;	size:4;	signed:1;
	field:int chip_select;	offset:12;	size:4;	signed:1;
	field:struct spi_transfer * xfer;	offset:16;	size:8;	signed:0;
	field:int len;	offset:24;	size:4;	signed:1;

print fmt: "spi%d.%d %p len=%d", (int)REC->bus_num, (int)REC->chip_select, (struct spi_message *)REC->xfer, (int)REC->len