linux-kernel - [PATCH] usb: chipidea: Set the DT node on the child device

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Date:   Wed, 15 Dec 2021 16:56:46 -0600
From:   Rob Herring <robh@...nel.org>
To:     Peter Chen <peter.chen@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] usb: chipidea: Set the DT node on the child device

The ChipIdea glue drivers just copy the glue resources to the "ci_hdrc"
child device. Instead, set the child device's DT node pointer to the
parent device's node so that platform_get_irq() can find the IRQ
resources in the DT. This removes the need for statically populating the
IRQ resources from the DT which has been deprecated for some time.

Signed-off-by: Rob Herring <robh@...nel.org>
---
 drivers/usb/chipidea/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index a56f06368d14..5359b2a2e4d2 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -864,6 +864,7 @@ struct platform_device *ci_hdrc_add_device(struct device *dev,
 	}
 
 	pdev->dev.parent = dev;
+	device_set_of_node_from_dev(&pdev->dev, dev);
 
 	ret = platform_device_add_resources(pdev, res, nres);
 	if (ret)
-- 
2.32.0