From cd5ee3fb077bba24adf9064cbb91f12355e7294a Mon Sep 17 00:00:00 2001 From: huxiandong Date: Fri, 7 Apr 2023 18:19:39 +0800 Subject: [PATCH] spi/slave: use POLLPRI to notify TX_COMPLETE. Signed-off-by: huxiandong --- drivers/spi/spi_slave_driver.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi_slave_driver.c b/drivers/spi/spi_slave_driver.c index d8d745606b7..dc386613a57 100644 --- a/drivers/spi/spi_slave_driver.c +++ b/drivers/spi/spi_slave_driver.c @@ -707,9 +707,14 @@ static void spi_slave_notify(FAR struct spi_slave_dev_s *dev, FAR struct spi_slave_driver_s *priv = (FAR struct spi_slave_driver_s *)dev; int semcnt; + /* POLLOUT is used to notify the upper layer that data can be written, + * POLLPRI is used to notify the upper layer that the data written + * has been read + */ + if (state == SPISLAVE_TX_COMPLETE) { - poll_notify(&priv->fds, 1, POLLOUT); + poll_notify(&priv->fds, 1, POLLOUT | POLLPRI); } else if (state == SPISLAVE_RX_COMPLETE) {