i2c: mxs: use MXS_DMA_CTRL_WAIT4END instead of DMA_CTRL_ACK

The driver-specific usage of the DMA_CTRL_ACK flag was replaced with a
custom flag in commit ceeeb99cd821 ("dmaengine: mxs: rename custom flag"),
but i2c-mxs was not updated to use the new flag, completely breaking I2C
transactions using DMA.

Fixes: ceeeb99cd821 ("dmaengine: mxs: rename custom flag")
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index 9587347..c4b08a9 100644 (file)
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -25,6 +25,7 @@
 #include <linux/of_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
+#include <linux/dma/mxs-dma.h>
 
 #define DRIVER_NAME "mxs-i2c"
 
@@ -200,7 +201,8 @@ static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap,
                dma_map_sg(i2c->dev, &i2c->sg_io[0], 1, DMA_TO_DEVICE);
                desc = dmaengine_prep_slave_sg(i2c->dmach, &i2c->sg_io[0], 1,
                                        DMA_MEM_TO_DEV,
-                                       DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+                                       DMA_PREP_INTERRUPT |
+                                       MXS_DMA_CTRL_WAIT4END);
                if (!desc) {
                        dev_err(i2c->dev,
                                "Failed to get DMA data write descriptor.\n");
@@ -228,7 +230,8 @@ static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap,
                dma_map_sg(i2c->dev, &i2c->sg_io[1], 1, DMA_FROM_DEVICE);
                desc = dmaengine_prep_slave_sg(i2c->dmach, &i2c->sg_io[1], 1,
                                        DMA_DEV_TO_MEM,
-                                       DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+                                       DMA_PREP_INTERRUPT |
+                                       MXS_DMA_CTRL_WAIT4END);
                if (!desc) {
                        dev_err(i2c->dev,
                                "Failed to get DMA data write descriptor.\n");
@@ -260,7 +263,8 @@ static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap,
                dma_map_sg(i2c->dev, i2c->sg_io, 2, DMA_TO_DEVICE);
                desc = dmaengine_prep_slave_sg(i2c->dmach, i2c->sg_io, 2,
                                        DMA_MEM_TO_DEV,
-                                       DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+                                       DMA_PREP_INTERRUPT |
+                                       MXS_DMA_CTRL_WAIT4END);
                if (!desc) {
                        dev_err(i2c->dev,
                                "Failed to get DMA data write descriptor.\n");