diff options
Diffstat (limited to 'drivers/nfc/trf7970a.c')
| -rw-r--r-- | drivers/nfc/trf7970a.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c index 6d2b06ddf191..8c00827893f1 100644 --- a/drivers/nfc/trf7970a.c +++ b/drivers/nfc/trf7970a.c @@ -648,6 +648,21 @@ static void trf7970a_drain_fifo(struct trf7970a *trf, u8 status) status = TRF7970A_IRQ_STATUS_SRX; } else { trf->state = TRF7970A_ST_WAIT_FOR_RX_DATA_CONT; + + ret = trf7970a_read(trf, TRF7970A_FIFO_STATUS, &fifo_bytes); + if (ret) { + trf7970a_send_err_upstream(trf, ret); + return; + } + + fifo_bytes &= ~TRF7970A_FIFO_STATUS_OVERFLOW; + + /* If there are bytes in the FIFO, set status to '0' so + * the if stmt below doesn't fire and the driver will wait + * for the trf7970a to generate another RX interrupt. + */ + if (fifo_bytes) + status = 0; } no_rx_data: |