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hwmon: (pmbus) Fix page count auto-detection.
Devices with compatible="pmbus" field have zero initial page count, and pmbus_clear_faults() being called before the page count auto- detection does not actually clear faults because it depends on the page count. Non-cleared faults in its turn may fail the subsequent page count auto-detection. This patch fixes this problem by calling pmbus_clear_fault_page() for currently set page and calling pmbus_clear_faults() after the page count was detected. Cc: stable@vger.kernel.org Signed-off-by: Dmitry Bazhenov <bazhenov.dn@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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04e79eb704
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e7c6a55606
2 changed files with 6 additions and 1 deletions
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@ -118,6 +118,8 @@ static int pmbus_identify(struct i2c_client *client,
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} else {
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info->pages = 1;
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}
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pmbus_clear_faults(client);
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}
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if (pmbus_check_byte_register(client, 0, PMBUS_VOUT_MODE)) {
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@ -2015,7 +2015,10 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data,
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if (ret >= 0 && (ret & PB_CAPABILITY_ERROR_CHECK))
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client->flags |= I2C_CLIENT_PEC;
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pmbus_clear_faults(client);
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if (data->info->pages)
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pmbus_clear_faults(client);
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else
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pmbus_clear_fault_page(client, -1);
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if (info->identify) {
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ret = (*info->identify)(client, info);
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