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Message-ID: <20240220111044.133776-1-herve.codina@bootlin.com>
Date: Tue, 20 Feb 2024 12:10:35 +0100
From: Herve Codina <herve.codina@...tlin.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Frank Rowand <frowand.list@...il.com>,
Shawn Guo <shawnguo@...nel.org>,
Saravana Kannan <saravanak@...gle.com>,
Wolfram Sang <wsa@...nel.org>,
Mark Brown <broonie@...nel.org>
Cc: Geert Uytterhoeven <geert+renesas@...der.be>,
Rob Herring <robh@...nel.org>,
linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org,
Luca Ceresoli <luca.ceresoli@...tlin.com>,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Herve Codina <herve.codina@...tlin.com>
Subject: [PATCH 0/2] devlink: Take care of FWNODE_FLAG_NOT_DEVICE in case of DT overlays
Since commit 1a50d9403fb9 ("treewide: Fix probing of devices in DT
overlays"), the FWNODE_FLAG_NOT_DEVICE is set on nodes present in the
overlay. Having this flag set leads to some wrong devlink links.
For instance, some links can be created with a supplier set to a parent
device instead of the device itself.
This series clears the FWNODE_FLAG_NOT_DEVICE in some specific location
to fix the wrong links issues.
- device_add()
When a device is added, the related fwnode (if any) is populated as
a struct device. It makes sense to clear the flag at that point and so
avoid differences between DT used with or without overlays.
- of_link_phandle()
If the supplier device has a compatible string and 'is available', a
device is going to be created soon to handle this node. In that case,
to avoid a link created using the supplier parent device instead of
the device itself, clearing the FWNODE_FLAG_NOT_DEVICE makes sense.
Best regards,
Hervé Codina
Herve Codina (2):
driver core: Clear FWNODE_FLAG_NOT_DEVICE when a device is added
of: property: fw_devlink: Fix links to supplier when created from
phandles
drivers/base/core.c | 1 +
drivers/of/property.c | 16 +++++++++++++++-
2 files changed, 16 insertions(+), 1 deletion(-)
--
2.43.0
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