spi-mxs: Fix chipselect glitch

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@runtux.com>
Link: https://msgid.link/r/20240202115330.wxkbfmvd76sy3a6a@runtux.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: Stefan Wahren <wahrenst@gmx.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c
index 435309b09227ea3297651a51531ab429538b48e3..fc10936ed33ba299e172642cb282701bb27530a4 100644 (file)
--- 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_spi *spi,
                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,