/* There are times when the data lines are allowed to tristate. What is actually sensed on the line depends on the hardware. It could always be 0xFF/0x00 (if there are pull ups/downs), or things could float and so we'd get garbage back. This func encapsulates that scenario so we can worry about the details here.  */
static void sandbox_spi_tristate(u8 *buf, uint len)
/* There are times when the data lines are allowed to tristate. What is actually sensed on the line depends on the hardware. It could always be 0xFF/0x00 (if there are pull ups/downs), or things could float and so we'd get garbage back. This func encapsulates that scenario so we can worry about the details here.  */
static void sandbox_spi_tristate(u8 *buf, uint len)
{
	memset(buf, 0xff, len);
}