diff options
| author | Shunyong Yang <[email protected]> | 2018-03-21 12:46:23 -0600 |
|---|---|---|
| committer | Alex Williamson <[email protected]> | 2018-03-22 13:18:18 -0600 |
| commit | c9f89c3f87cfc026d88c08054710902dd52a7772 (patch) | |
| tree | aea02512b416b7d4495a14515cad8c42dd077498 | |
| parent | 6bd06f5a486c06023a618a86e8153b91d26f75f4 (diff) | |
vfio-mdev/samples: change RDI interrupt condition
When FIFO mode is enabled, the receive data available interrupt
(UART_IIR_RDI in code) should be triggered when the number of data
in FIFO is equal or larger than interrupt trigger level.
This patch changes the trigger level check to ensure multiple bytes
received from upper layer can trigger RDI interrupt correctly.
Cc: Joey Zheng <[email protected]>
Signed-off-by: Shunyong Yang <[email protected]>
Reviewed by: Kirti Wankhede <[email protected]>
Signed-off-by: Alex Williamson <[email protected]>
| -rw-r--r-- | samples/vfio-mdev/mtty.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c index 09f255bdf3ac..7abb79d8313d 100644 --- a/samples/vfio-mdev/mtty.c +++ b/samples/vfio-mdev/mtty.c @@ -534,7 +534,7 @@ static void handle_bar_read(unsigned int index, struct mdev_state *mdev_state, /* Interrupt priority 2: Fifo trigger level reached */ if ((ier & UART_IER_RDI) && - (mdev_state->s[index].rxtx.count == + (mdev_state->s[index].rxtx.count >= mdev_state->s[index].intr_trigger_level)) *buf |= UART_IIR_RDI; |