hwmon: (ad7414) Return proper error code for ad7414_probe()

Return proper error if i2c_check_functionality reports
the adapter does not support the capability we need.

Also remove unneeded initialization for err variable.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>

diff --git a/drivers/hwmon/ad7414.c b/drivers/hwmon/ad7414.c
index 1e4c21fc1a890b38894e26f0b0713fef1bb0fd63..86d822aa9bbf78a75ff20d1e4bff1bb0623d3a79 100644 (file)
--- a/drivers/hwmon/ad7414.c
+++ b/drivers/hwmon/ad7414.c
@@ -178,11 +178,13 @@ static int ad7414_probe(struct i2c_client *client,
 {
        struct ad7414_data *data;
        int conf;
-       int err = 0;
+       int err;
 
        if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA |
-                                    I2C_FUNC_SMBUS_READ_WORD_DATA))
+                                    I2C_FUNC_SMBUS_READ_WORD_DATA)) {
+               err = -EOPNOTSUPP;
                goto exit;
+       }
 
        data = kzalloc(sizeof(struct ad7414_data), GFP_KERNEL);
        if (!data) {