| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 39/71] spi: rockchip: terminate dma transmission when slave abort | Date | Mon, 14 Mar 2022 12:53:32 +0100 |
| |
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 --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); -- 2.34.1
|