linux-kernel - [PATCH 4.19 02/32] hwmon: (tmp401) Add OF device ID table

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Message-Id: <20220516193614.848946826@linuxfoundation.org>
Date:   Mon, 16 May 2022 21:36:16 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Camel Guo <camel.guo@...s.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 02/32] hwmon: (tmp401) Add OF device ID table

From: Camel Guo <camel.guo@...s.com>

[ Upstream commit 3481551f035725fdc46885425eac3ef9b58ae7b7 ]

This driver doesn't have of_match_table. This makes the kernel module
tmp401.ko lack alias patterns (e.g: of:N*T*Cti,tmp411) to match DT node
of the supported devices hence this kernel module will not be
automatically loaded.

After adding of_match_table to this driver, the folllowing alias will be
added into tmp401.ko.
$ modinfo drivers/hwmon/tmp401.ko
filename: drivers/hwmon/tmp401.ko
......
author:         Hans de Goede <hdegoede@...hat.com>
alias:          of:N*T*Cti,tmp435C*
alias:          of:N*T*Cti,tmp435
alias:          of:N*T*Cti,tmp432C*
alias:          of:N*T*Cti,tmp432
alias:          of:N*T*Cti,tmp431C*
alias:          of:N*T*Cti,tmp431
alias:          of:N*T*Cti,tmp411C*
alias:          of:N*T*Cti,tmp411
alias:          of:N*T*Cti,tmp401C*
alias:          of:N*T*Cti,tmp401
......

Fixes: af503716ac14 ("i2c: core: report OF style module alias for devices registered via OF")
Signed-off-by: Camel Guo <camel.guo@...s.com>
Link: https://lore.kernel.org/r/20220503114333.456476-1-camel.guo@axis.com
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/hwmon/tmp401.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c
index 1f2d13dc9439..99b0d7e0a27a 100644
--- a/drivers/hwmon/tmp401.c
+++ b/drivers/hwmon/tmp401.c
@@ -756,10 +756,21 @@ static int tmp401_probe(struct i2c_client *client,
 	return 0;
 }

+static const struct of_device_id __maybe_unused tmp4xx_of_match[] = {
+	{ .compatible = "ti,tmp401", },
+	{ .compatible = "ti,tmp411", },
+	{ .compatible = "ti,tmp431", },
+	{ .compatible = "ti,tmp432", },
+	{ .compatible = "ti,tmp435", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, tmp4xx_of_match);
+
 static struct i2c_driver tmp401_driver = {
 	.class		= I2C_CLASS_HWMON,
 	.driver = {
 		.name	= "tmp401",
+		.of_match_table = of_match_ptr(tmp4xx_of_match),
 	},
 	.probe		= tmp401_probe,
 	.id_table	= tmp401_id,
-- 
2.35.1