drm: xlnx: Use dma_request_chan for DMA channel request

There is no need to use the of_dma_request_slave_channel() directly as
dma_request_chan() is going to try to get the channel via OF as well.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Hyun Kwon <hyun.kwon@xilinx.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201023094602.5630-1-peter.ujfalusi@ti.com

diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 0b3bd62e7631264d0d8042755bad0a72e0f76b33..5802752860dd2c7c21ada318617070429233da3f 100644 (file)
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -28,7 +28,6 @@
 #include <linux/dmaengine.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_dma.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/spinlock.h>
@@ -1316,8 +1315,7 @@ static int zynqmp_disp_layer_request_dma(struct zynqmp_disp *disp,
 
                snprintf(dma_channel_name, sizeof(dma_channel_name),
                         "%s%u", dma_names[layer->id], i);
-               dma->chan = of_dma_request_slave_channel(disp->dev->of_node,
-                                                        dma_channel_name);
+               dma->chan = dma_request_chan(disp->dev, dma_channel_name);
                if (IS_ERR(dma->chan)) {
                        dev_err(disp->dev, "failed to request dma channel\n");
                        ret = PTR_ERR(dma->chan);