linux-kernel - [PATCH v4 17/29] i2c: mux: Set adapter physical device

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Message-ID: <20251015071420.1173068-18-herve.codina@bootlin.com>
Date: Wed, 15 Oct 2025 09:14:04 +0200
From: Herve Codina <herve.codina@...tlin.com>
To: Andrew Lunn <andrew@...n.ch>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
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Cc: Wolfram Sang <wsa@...nel.org>,
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Subject: [PATCH v4 17/29] i2c: mux: Set adapter physical device

For i2c muxes, the parent of the mux adapter device is the adapter
device the mux is connected to.

This parent is not the physical device related to the mux adapter.
Indeed, the physical device of the mux adapter is the mux device itself.

Fill the adap.physdev with the mux device.

Signed-off-by: Herve Codina <herve.codina@...tlin.com>
---
 drivers/i2c/i2c-mux.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
index d59644e50f14..e5ba1c96ccf4 100644
--- a/drivers/i2c/i2c-mux.c
+++ b/drivers/i2c/i2c-mux.c
@@ -315,6 +315,7 @@ int i2c_mux_add_adapter(struct i2c_mux_core *muxc,
 	priv->adap.algo = &priv->algo;
 	priv->adap.algo_data = priv;
 	priv->adap.dev.parent = &parent->dev;
+	priv->adap.physdev = muxc->dev;
 	priv->adap.retries = parent->retries;
 	priv->adap.timeout = parent->timeout;
 	priv->adap.quirks = parent->quirks;
-- 
2.51.0