SJA1105_SIZE_SPI_MSG_HEADER
if (max_msg < SJA1105_SIZE_SPI_MSG_HEADER + 8) {
if (priv->max_xfer_len > max_msg - SJA1105_SIZE_SPI_MSG_HEADER)
priv->max_xfer_len = max_msg - SJA1105_SIZE_SPI_MSG_HEADER;
const int size = SJA1105_SIZE_SPI_MSG_HEADER;
u8 hdr_buf[SJA1105_SIZE_SPI_MSG_HEADER] = {0};
hdr_xfer->len = SJA1105_SIZE_SPI_MSG_HEADER;