5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ralf Schlatterbeck <rsc@xxxxxxxxxx>
commit 269e31aecdd0b70f53a05def79480f15cbcc0fd6 upstream.
There was a change in the mxs-dma engine that uses a new custom flag.
The change was not applied to the mxs spi driver.
This results in chipselect being deasserted too early.
This fixes the chipselect problem by using the new flag in the mxs-spi
driver.
Fixes: ceeeb99cd821 ("dmaengine: mxs: rename custom flag")
Signed-off-by: Ralf Schlatterbeck <rsc@xxxxxxxxxx>
Link: https://msgid.link/r/20240202115330.wxkbfmvd76sy3a6a@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Cc: Stefan Wahren <wahrenst@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/spi/spi-mxs.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -39,6 +39,7 @@
#include <linux/spi/spi.h>
#include <linux/spi/mxs-spi.h>
#include <trace/events/spi.h>
+#include <linux/dma/mxs-dma.h>
#define DRIVER_NAME "mxs-spi"
@@ -252,7 +253,7 @@ static int mxs_spi_txrx_dma(struct mxs_s
desc = dmaengine_prep_slave_sg(ssp->dmach,
&dma_xfer[sg_count].sg, 1,
(flags & TXRX_WRITE) ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM,
- DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ DMA_PREP_INTERRUPT | MXS_DMA_CTRL_WAIT4END);
if (!desc) {
dev_err(ssp->dev,
