UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

spi: rockchip: terminate dma transmission when slave abort 

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>
This commit is contained in:
Jon Lin 2022-02-16 09:40:24 +08:00 committed by Mark Brown
parent 9382df0a98
commit 80808768e4
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/spi/spi-rockchip.c
View File

@ -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);