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

Jon Lin
2022-02-16T01:41:03Z

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 --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);

--
2.17.1