linux-kernel - [PATCH] serial: amba-pl011: set fwnode from parent device

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Date:   Fri, 13 Oct 2023 17:47:42 +0200
From:   Emil Kronborg Andersen <emkan@...vas.dk>
To:     linux@...linux.org.uk
Cc:     emkan@...vas.dk, gregkh@...uxfoundation.org, jirislaby@...nel.org,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        saravanak@...gle.com
Subject: [PATCH] serial: amba-pl011: set fwnode from parent device

After commit 3fb16866b51d ("driver core: fw_devlink: Make cycle
detection more robust"), consumer devices without their fwnode set
printed errors like the one below:

[    0.261887] uart-pl011 3f201000.serial: Failed to create device link (0x180) with soc:firmware:gpio

To fix this, set the fwnode so fw_devlink can find and handle it
properly.

Fixes: 3fb16866b51d ("driver core: fw_devlink: Make cycle detection more robust")
Signed-off-by: Emil Kronborg Andersen <emkan@...vas.dk>
---
 drivers/tty/serial/amba-pl011.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 3dc9b0fcab1c..29cef84b71c0 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -2798,6 +2798,8 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
 	int portnr, ret;
 	u32 val;
 
+	device_set_node(&dev->dev, dev_fwnode(dev->dev.parent));
+
 	portnr = pl011_find_free_port();
 	if (portnr < 0)
 		return portnr;
-- 
2.41.0