linux-kernel - [PATCH 5.5 101/120] i2c: cros-ec-tunnel: Fix slave device enumeration

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Date:   Thu, 13 Feb 2020 07:21:37 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Akshu Agrawal <akshu.agrawal@....com>,
        Raul E Rangel <rrangel@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Wolfram Sang <wsa@...-dreams.de>
Subject: [PATCH 5.5 101/120] i2c: cros-ec-tunnel: Fix slave device enumeration

From: Akshu Agrawal <akshu.agrawal@....com>

commit 8ff2d7ca4a55dfabf12e876369835bd024eb4621 upstream.

During adding of the adapter the slave device registration
use to fail as the acpi companion field was not populated.

Fixes: 9af1563a5486 ("i2c: cros-ec-tunnel: Make the device acpi compatible")
Signed-off-by: Akshu Agrawal <akshu.agrawal@....com>
Acked-by: Raul E Rangel <rrangel@...omium.org>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/i2c/busses/i2c-cros-ec-tunnel.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/i2c/busses/i2c-cros-ec-tunnel.c
+++ b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
@@ -273,6 +273,7 @@ static int ec_i2c_probe(struct platform_
 	bus->adap.dev.parent = &pdev->dev;
 	bus->adap.dev.of_node = pdev->dev.of_node;
 	bus->adap.retries = I2C_MAX_RETRIES;
+	ACPI_COMPANION_SET(&bus->adap.dev, ACPI_COMPANION(&pdev->dev));
 
 	err = i2c_add_adapter(&bus->adap);
 	if (err)