diff options
Diffstat (limited to 'src/soc/mediatek')
| -rw-r--r-- | src/soc/mediatek/mt8173/spi.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/soc/mediatek/mt8173/spi.c b/src/soc/mediatek/mt8173/spi.c index ae6dc3b911..f70f4d991e 100644 --- a/src/soc/mediatek/mt8173/spi.c +++ b/src/soc/mediatek/mt8173/spi.c @@ -253,6 +253,10 @@ static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, size_t min_size = 0; int ret; + /* Driver implementation does not support full duplex. */ + if (bytes_in && bytes_out) + return -1; + while (bytes_out || bytes_in) { if (bytes_in && bytes_out) min_size = MIN(MIN(bytes_out, bytes_in), MTK_FIFO_DEPTH); @@ -307,7 +311,6 @@ static const struct spi_ctrlr spi_ctrlr = { .claim_bus = spi_ctrlr_claim_bus, .release_bus = spi_ctrlr_release_bus, .xfer = spi_ctrlr_xfer, - .xfer_vector = spi_xfer_two_vectors, .max_xfer_size = 65535, }; |