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Message-Id: <20250903-v6-16-topic-sdma-v1-8-ac7bab629e8b@pengutronix.de>
Date: Wed, 03 Sep 2025 15:06:16 +0200
From: Marco Felsch <m.felsch@...gutronix.de>
To: Vinod Koul <vkoul@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>, Jiada Wang <jiada_wang@...tor.com>
Cc: dmaengine@...r.kernel.org, imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Marco Felsch <m.felsch@...gutronix.de>
Subject: [PATCH 08/11] dmaengine: imx-sdma: fix missing
of_dma_controller_free()
Add the missing of_dma_controller_free() to free the resources allocated
via of_dma_controller_register(). The missing free was introduced long
time ago by commit 23e118113782 ("dma: imx-sdma: use
module_platform_driver for SDMA driver") while adding a proper .remove()
implementation.
Fixes: 23e118113782 ("dma: imx-sdma: use module_platform_driver for SDMA driver")
Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
---
drivers/dma/imx-sdma.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index e30dd46cf6522ee2aa4d3aca9868a01afbd29615..6c6d38b202dd2deffc36b1bd27bc7c60de3d7403 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -2232,6 +2232,13 @@ static struct dma_chan *sdma_xlate(struct of_phandle_args *dma_spec,
ofdma->of_node);
}
+static void sdma_dma_of_dma_controller_unregister_action(void *data)
+{
+ struct sdma_engine *sdma = data;
+
+ of_dma_controller_free(sdma->dev->of_node);
+}
+
static void sdma_dma_device_unregister_action(void *data)
{
struct sdma_engine *sdma = data;
@@ -2370,6 +2377,8 @@ static int sdma_probe(struct platform_device *pdev)
if (ret)
return dev_err_probe(dev, ret, "failed to register controller\n");
+ devm_add_action_or_reset(dev, sdma_dma_of_dma_controller_unregister_action, sdma);
+
spba_bus = of_find_compatible_node(NULL, NULL, "fsl,spba-bus");
ret = of_address_to_resource(spba_bus, 0, &spba_res);
if (!ret) {
--
2.47.2
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