This is a note to let you know that I've just added the patch titled
spi: rockchip: terminate dma transmission when slave abort
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-rockchip-terminate-dma-transmission-when-slave-a.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c1a0913e6579984a6456d1340b29f605801a4b76
Author: Jon Lin <jon.lin@xxxxxxxxxxxxxx>
Date: Wed Feb 16 09:40:24 2022 +0800
spi: rockchip: terminate dma transmission when slave abort
[ 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@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220216014028.8123-3-jon.lin@xxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index a59431075411..a9f97023d5a0 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);
