linux-kernel - [PATCH AUTOSEL 5.5 500/542] i2c: cros-ec-tunnel: Fix slave device enumeration

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Date:   Fri, 14 Feb 2020 10:48:12 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Akshu Agrawal <akshu.agrawal@....com>,
        Raul E Rangel <rrangel@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Wolfram Sang <wsa@...-dreams.de>,
        Sasha Levin <sashal@...nel.org>, linux-i2c@...r.kernel.org
Subject: [PATCH AUTOSEL 5.5 500/542] i2c: cros-ec-tunnel: Fix slave device enumeration

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

[ Upstream commit 8ff2d7ca4a55dfabf12e876369835bd024eb4621 ]

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: Sasha Levin <sashal@...nel.org>
---
 drivers/i2c/busses/i2c-cros-ec-tunnel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-cros-ec-tunnel.c b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
index 958161c71985d..8a2db3ac3b3c7 100644
--- 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_device *pdev)
 	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)
-- 
2.20.1