linux-kernel - [PATCH] drm: xlnx: Use dma_request

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Date:   Fri, 23 Oct 2020 12:46:02 +0300
From:   Peter Ujfalusi <peter.ujfalusi@...com>
To:     <hyun.kwon@...inx.com>, <laurent.pinchart@...asonboard.com>,
        <airlied@...ux.ie>, <daniel@...ll.ch>
CC:     <dri-devel@...ts.freedesktop.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] 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@...com>
---
 drivers/gpu/drm/xlnx/zynqmp_disp.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 98bd48f13fd1..a4405d081aca 100644
--- 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);
-- 
Peter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
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