diff mbox series

[v3,2/6] spi: rockchip: terminate dma transmission when slave abort

Message ID 20220216014028.8123-3-jon.lin@rock-chips.com
State Accepted
Commit 80808768e41324d2e23de89972b5406c1020e6e4
Headers show
Series New support and problem adjustment of SPI rockchip | expand

Commit Message

Jon Lin Feb. 16, 2022, 1:40 a.m. UTC
After slave abort, all DMA should be stopped, or it will affect the
next transmission and maybe abort again.

Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
---

Changes in v3: None
Changes in v2:
- Fix patches should be at the start of the series
- Delete useless messages

Changes in v1: None

 drivers/spi/spi-rockchip.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 4f65ba3dd19c..c6a1bb09be05 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -585,6 +585,12 @@  static int rockchip_spi_slave_abort(struct spi_controller *ctlr)
 {
 	struct rockchip_spi *rs = spi_controller_get_devdata(ctlr);
 
+	if (atomic_read(&rs->state) & RXDMA)
+		dmaengine_terminate_sync(ctlr->dma_rx);
+	if (atomic_read(&rs->state) & TXDMA)
+		dmaengine_terminate_sync(ctlr->dma_tx);
+	atomic_set(&rs->state, 0);
+	spi_enable_chip(rs, false);
 	rs->slave_abort = true;
 	spi_finalize_current_transfer(ctlr);