Commit d2cac802 authored by Ben Hutchings's avatar Ben Hutchings Committed by Jean Delvare

hwmon: (lm87) Restore original configuration register on removal

This means that if we have to start the monitor when probed, we also
stop it on removal.
Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 49ae6cc8
......@@ -199,6 +199,7 @@ struct lm87_data {
unsigned long last_updated; /* In jiffies */
u8 channel; /* register value */
u8 config; /* original register value */
u8 in[8]; /* register value */
u8 in_max[8]; /* register value */
......@@ -832,6 +833,7 @@ static int lm87_probe(struct i2c_client *new_client,
sysfs_remove_group(&new_client->dev.kobj, &lm87_group);
sysfs_remove_group(&new_client->dev.kobj, &lm87_group_opt);
exit_free:
lm87_write_value(new_client, LM87_REG_CONFIG, data->config);
kfree(data);
exit:
return err;
......@@ -840,12 +842,11 @@ static int lm87_probe(struct i2c_client *new_client,
static void lm87_init_client(struct i2c_client *client)
{
struct lm87_data *data = i2c_get_clientdata(client);
u8 config;
data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE);
data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F;
config = lm87_read_value(client, LM87_REG_CONFIG);
if (!(config & 0x01)) {
if (!(data->config & 0x01)) {
int i;
/* Limits are left uninitialized after power-up */
......@@ -869,9 +870,9 @@ static void lm87_init_client(struct i2c_client *client)
}
/* Make sure Start is set and INT#_Clear is clear */
if ((config & 0x09) != 0x01)
if ((data->config & 0x09) != 0x01)
lm87_write_value(client, LM87_REG_CONFIG,
(config & 0x77) | 0x01);
(data->config & 0x77) | 0x01);
}
static int lm87_remove(struct i2c_client *client)
......@@ -882,6 +883,7 @@ static int lm87_remove(struct i2c_client *client)
sysfs_remove_group(&client->dev.kobj, &lm87_group);
sysfs_remove_group(&client->dev.kobj, &lm87_group_opt);
lm87_write_value(client, LM87_REG_CONFIG, data->config);
kfree(data);
return 0;
}
......
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