[PATCH AUTOSEL 5.10 04/14] spi: rockchip: terminate dma transmission when slave abort
Sasha Levin
sashal at kernel.org
Tue Mar 1 12:18:16 PST 2022
From: Jon Lin <jon.lin at rock-chips.com>
[ Upstream commit 80808768e41324d2e23de89972b5406c1020e6e4 ]
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 at rock-chips.com>
Link: https://lore.kernel.org/r/20220216014028.8123-3-jon.lin@rock-chips.com
Signed-off-by: Mark Brown <broonie at kernel.org>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
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 a594310754111..a9f97023d5a00 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -567,6 +567,12 @@ 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;
complete(&ctlr->xfer_completion);
--
2.34.1
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