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[5.16,067/121] spi: rockchip: terminate dma transmission when slave abort

Message ID 20220314112745.994984753@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH March 14, 2022, 11:54 a.m. UTC 
From: Jon Lin <jon.lin@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@rock-chips.com>
Link: https://lore.kernel.org/r/20220216014028.8123-3-jon.lin@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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);