diff options
| author | Ralf Schlatterbeck <rsc@runtux.com> | 2024-02-02 12:53:30 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-13 12:58:40 +0100 |
| commit | f9825c3f507d5a3b4192bb8557c9cd8875ecf170 (patch) | |
| tree | a36f9a363b986d2af486944181b251e784acb2bd | |
| parent | aa6ef9ceab9c2e91a35f6d7063802b991b9aa5ef (diff) | |
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>
| -rw-r--r-- | drivers/spi/spi-mxs.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c index cd0e7ae07162..7e556f37d598 100644 --- 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, |