linux-kernel - [PATCH 21/31] hwmon: (max6697) Remove use of i2c_match

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240403203633.914389-22-afd@ti.com>
Date: Wed, 3 Apr 2024 15:36:23 -0500
From: Andrew Davis <afd@...com>
To: Jean Delvare <jdelvare@...e.com>, Guenter Roeck <linux@...ck-us.net>,
        Juerg Haefliger <juergh@...ton.me>, Riku Voipio <riku.voipio@....fi>
CC: <linux-hwmon@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew
 Davis <afd@...com>
Subject: [PATCH 21/31] hwmon: (max6697) Remove use of i2c_match_id()

The function i2c_match_id() is used to fetch the matching ID from
the i2c_device_id table. This is often used to then retrieve the
matching driver_data. This can be done in one step with the helper
i2c_get_match_data().

This helper has a couple other benefits:
 * It doesn't need the i2c_device_id passed in so we do not need
   to have that forward declared, allowing us to remove those or
   move the i2c_device_id table down to its more natural spot
   with the other module info.
 * It also checks for device match data, which allows for OF and
   ACPI based probing. That means we do not have to manually check
   those first and can remove those checks.

Signed-off-by: Andrew Davis <afd@...com>
---
 drivers/hwmon/max6697.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/hwmon/max6697.c b/drivers/hwmon/max6697.c
index d161ba0e7813c..b28b7b9448aa8 100644
--- a/drivers/hwmon/max6697.c
+++ b/drivers/hwmon/max6697.c
@@ -684,8 +684,6 @@ static int max6697_init_chip(struct max6697_data *data,
 	return 0;
 }

-static const struct i2c_device_id max6697_id[];
-
 static int max6697_probe(struct i2c_client *client)
 {
 	struct i2c_adapter *adapter = client->adapter;
@@ -701,10 +699,7 @@ static int max6697_probe(struct i2c_client *client)
 	if (!data)
 		return -ENOMEM;

-	if (client->dev.of_node)
-		data->type = (uintptr_t)of_device_get_match_data(&client->dev);
-	else
-		data->type = i2c_match_id(max6697_id, client)->driver_data;
+	data->type = (uintptr_t)i2c_get_match_data(client);
 	data->chip = &max6697_chip_data[data->type];
 	data->client = client;
 	mutex_init(&data->update_lock);
-- 
2.39.2