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hwmon: (pmbus/ltc2978) Fix peak attribute handling

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Peak attributes were not initialized and cleared correctly.
Also, temp2_max is only supported on page 0 and thus does not need to be
an array.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org # 3.2+
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2013-02-21 09:33:25 -08:00
parent 6d21a41656
commit dbd712c227
1 changed files with 15 additions and 13 deletions
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28
drivers/hwmon/pmbus/ltc2978.c
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@ -62,7 +62,7 @@ struct ltc2978_data {
int temp_min, temp_max;
int vout_min[8], vout_max[8];
int iout_max[2];
int temp2_max[2];
int temp2_max;
struct pmbus_driver_info info;
};
@ -204,10 +204,9 @@ static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg)
ret = pmbus_read_word_data(client, page,
LTC3880_MFR_TEMPERATURE2_PEAK);
if (ret >= 0) {
if (lin11_to_val(ret)
> lin11_to_val(data->temp2_max[page]))
data->temp2_max[page] = ret;
ret = data->temp2_max[page];
if (lin11_to_val(ret) > lin11_to_val(data->temp2_max))
data->temp2_max = ret;
ret = data->temp2_max;
}
break;
case PMBUS_VIRT_READ_VIN_MIN:
@ -248,11 +247,11 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page,
switch (reg) {
case PMBUS_VIRT_RESET_IOUT_HISTORY:
data->iout_max[page] = 0x7fff;
data->iout_max[page] = 0x7c00;
ret = ltc2978_clear_peaks(client, page, data->id);
break;
case PMBUS_VIRT_RESET_TEMP2_HISTORY:
data->temp2_max[page] = 0x7fff;
data->temp2_max = 0x7c00;
ret = ltc2978_clear_peaks(client, page, data->id);
break;
case PMBUS_VIRT_RESET_VOUT_HISTORY:
@ -262,12 +261,12 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page,
break;
case PMBUS_VIRT_RESET_VIN_HISTORY:
data->vin_min = 0x7bff;
data->vin_max = 0;
data->vin_max = 0x7c00;
ret = ltc2978_clear_peaks(client, page, data->id);
break;
case PMBUS_VIRT_RESET_TEMP_HISTORY:
data->temp_min = 0x7bff;
data->temp_max = 0x7fff;
data->temp_max = 0x7c00;
ret = ltc2978_clear_peaks(client, page, data->id);
break;
default:
@ -321,10 +320,11 @@ static int ltc2978_probe(struct i2c_client *client,
info = &data->info;
info->write_word_data = ltc2978_write_word_data;
data->vout_min[0] = 0xffff;
data->vin_min = 0x7bff;
data->vin_max = 0x7c00;
data->temp_min = 0x7bff;
data->temp_max = 0x7fff;
data->temp_max = 0x7c00;
data->temp2_max = 0x7c00;
switch (id->driver_data) {
case ltc2978:
@ -336,7 +336,6 @@ static int ltc2978_probe(struct i2c_client *client,
for (i = 1; i < 8; i++) {
info->func[i] = PMBUS_HAVE_VOUT
| PMBUS_HAVE_STATUS_VOUT;
data->vout_min[i] = 0xffff;
}
break;
case ltc3880:
@ -352,11 +351,14 @@ static int ltc2978_probe(struct i2c_client *client,
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
| PMBUS_HAVE_POUT
| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
data->vout_min[1] = 0xffff;
data->iout_max[0] = 0x7c00;
data->iout_max[1] = 0x7c00;
break;
default:
return -ENODEV;
}
for (i = 0; i < info->pages; i++)
data->vout_min[i] = 0xffff;
return pmbus_do_probe(client, id, info);
}