From 615a4bfc426e11dba05c2cf343f9ac752fb381d2 Mon Sep 17 00:00:00 2001
From: Miaoqian Lin <linmq006@gmail.com>
Date: Sun, 5 Jun 2022 08:27:22 +0400
Subject: [PATCH] dmaengine: ti: Add missing put_device in ti_dra7_xbar_route_allocate
Git-commit: 615a4bfc426e11dba05c2cf343f9ac752fb381d2
Patch-mainline: v5.19-rc6
References: git-fixes

of_find_device_by_node() takes reference, we should use put_device()
to release it when not need anymore.

Fixes: a074ae38f859 ("dmaengine: Add driver for TI DMA crossbar on DRA7x")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20220605042723.17668-1-linmq006@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/dma/ti/dma-crossbar.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/dma/ti/dma-crossbar.c b/drivers/dma/ti/dma-crossbar.c
index e34cfb50d241..f744ddbbbad7 100644
--- a/drivers/dma/ti/dma-crossbar.c
+++ b/drivers/dma/ti/dma-crossbar.c
@@ -245,6 +245,7 @@ static void *ti_dra7_xbar_route_allocate(struct of_phandle_args *dma_spec,
 	if (dma_spec->args[0] >= xbar->xbar_requests) {
 		dev_err(&pdev->dev, "Invalid XBAR request number: %d\n",
 			dma_spec->args[0]);
+		put_device(&pdev->dev);
 		return ERR_PTR(-EINVAL);
 	}
 
@@ -252,12 +253,14 @@ static void *ti_dra7_xbar_route_allocate(struct of_phandle_args *dma_spec,
 	dma_spec->np = of_parse_phandle(ofdma->of_node, "dma-masters", 0);
 	if (!dma_spec->np) {
 		dev_err(&pdev->dev, "Can't get DMA master\n");
+		put_device(&pdev->dev);
 		return ERR_PTR(-EINVAL);
 	}
 
 	map = kzalloc(sizeof(*map), GFP_KERNEL);
 	if (!map) {
 		of_node_put(dma_spec->np);
+		put_device(&pdev->dev);
 		return ERR_PTR(-ENOMEM);
 	}
 
@@ -269,6 +272,7 @@ static void *ti_dra7_xbar_route_allocate(struct of_phandle_args *dma_spec,
 		dev_err(&pdev->dev, "Run out of free DMA requests\n");
 		kfree(map);
 		of_node_put(dma_spec->np);
+		put_device(&pdev->dev);
 		return ERR_PTR(-ENOMEM);
 	}
 	set_bit(map->xbar_out, xbar->dma_inuse);
-- 
2.35.3