diff options
| -rw-r--r-- | common/fpsensor.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/common/fpsensor.c b/common/fpsensor.c index 10e7fb6369..f41f8013bd 100644 --- a/common/fpsensor.c +++ b/common/fpsensor.c @@ -183,6 +183,13 @@ static void fp_process_finger(void) if (!res) { uint32_t evt = EC_MKBP_FP_IMAGE_READY; + /* Clean up SPI before clocking up to avoid hang on the dsb + * in dma_go. Ignore the return value to let the WDT reboot + * the MCU (and avoid getting trapped in the loop). + * b/112781659 */ + res = spi_transaction_flush(&spi_devices[0]); + if (res) + CPRINTS("Failed to flush SPI: 0x%x", res); /* we need CPU power to do the computations */ clock_enable_module(MODULE_FAST_CPU, 1); |