linux-kernel - [PATCH 2/2] dmaengine: mmp_pdma: add missed of_dma_controller

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Message-Id: <20191115083153.12334-1-hslester96@gmail.com>
Date:   Fri, 15 Nov 2019 16:31:53 +0800
From:   Chuhong Yuan <hslester96@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Vinod Koul <vkoul@...nel.org>, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, Chuhong Yuan <hslester96@...il.com>
Subject: [PATCH 2/2] dmaengine: mmp_pdma: add missed of_dma_controller_free

The driver calls of_dma_controller_register in probe but does not free
it in remove.
Add the call to fix it.

Signed-off-by: Chuhong Yuan <hslester96@...il.com>
---
 drivers/dma/mmp_pdma.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
index 7fe494fc50d4..ad06f260e907 100644
--- a/drivers/dma/mmp_pdma.c
+++ b/drivers/dma/mmp_pdma.c
@@ -945,6 +945,8 @@ static int mmp_pdma_remove(struct platform_device *op)
 	struct mmp_pdma_phy *phy;
 	int i, irq = 0, irq_num = 0;
 
+	if (op->dev.of_node)
+		of_dma_controller_free(op->dev.of_node);
 
 	for (i = 0; i < pdev->dma_channels; i++) {
 		if (platform_get_irq(op, i) > 0)
-- 
2.24.0