eeprom: ee1004: Call i2c_new_scanned_device to instantiate thermal sensor

Instantiating a device by calling i2c_new_client_device() assumes that the
device is not already instantiated. If that is not the case, it will return
an error and generate a misleading kernel log message.

i2c i2c-0: Failed to register i2c client jc42 at 0x18 (-16)

This can be reproduced by unloading the ee1004 driver and loading it again.

Avoid this by calling i2c_new_scanned_device() instead, which returns
silently if a device is already instantiated or does not exist.

Fixes: 393bd1000f81 ("eeprom: ee1004: add support for temperature sensor")
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240629173716.20389-1-linux@roeck-us.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/eeprom/ee1004.c b/drivers/misc/eeprom/ee1004.c
index 2e69024..140bcb2 100644 (file)
--- a/drivers/misc/eeprom/ee1004.c
+++ b/drivers/misc/eeprom/ee1004.c
@@ -184,6 +184,8 @@ static int ee1004_read(void *priv, unsigned int off, void *val, size_t count)
 static void ee1004_probe_temp_sensor(struct i2c_client *client)
 {
        struct i2c_board_info info = { .type = "jc42" };
+       unsigned short addr = 0x18 | (client->addr & 7);
+       unsigned short addr_list[] = { addr, I2C_CLIENT_END };
        u8 byte14;
        int ret;
 
@@ -192,9 +194,7 @@ static void ee1004_probe_temp_sensor(struct i2c_client *client)
        if (ret != 1 || !(byte14 & BIT(7)))
                return;
 
-       info.addr = 0x18 | (client->addr & 7);
-
-       i2c_new_client_device(client->adapter, &info);
+       i2c_new_scanned_device(client->adapter, &info, addr_list, NULL);
 }
 
 static void ee1004_cleanup(int idx, struct ee1004_bus_data *bd)