Re: [PATCH v3 2/3] power: supply: add cros-ec USBPD charger driver.

From: Enric Balletbo i Serra
Date: Wed May 02 2018 - 11:40:14 EST


Hi Sebastian,

On 02/05/18 12:57, Sebastian Reichel wrote:
> Hi,
>
> I found one more issue, otherwise the driver looks fine to me.
>
> On Wed, May 02, 2018 at 11:53:42AM +0200, Enric Balletbo i Serra wrote:
>> This driver gets various bits of information about what is connected to
>> USB PD ports from the EC and converts that into power_supply properties.
>>
>> Signed-off-by: Sameer Nanda <snanda@xxxxxxxxxxxx>
>> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
>> Acked-by: Lee Jones <lee.jones@xxxxxxxxxx>
>> ---
> [...]
>> +static int cros_usbpd_charger_probe(struct platform_device *pd)
>> +{
> [...]
>> + for (i = 0; i < charger->num_charger_ports; i++) {
> [...]
>> + psy = devm_power_supply_register_no_ws(dev, psy_desc,
>> + &psy_cfg);
> [...]
>> + ec_device->charger = psy;
>> + }
> [...]
>> diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
>> index f36125ee9245..a1eb39344231 100644
>> --- a/include/linux/mfd/cros_ec.h
>> +++ b/include/linux/mfd/cros_ec.h
>> @@ -19,6 +19,7 @@
>> #include <linux/cdev.h>
>> #include <linux/device.h>
>> #include <linux/notifier.h>
>> +#include <linux/power_supply.h>
>> #include <linux/mfd/cros_ec_commands.h>
>> #include <linux/mutex.h>
>>
>> @@ -143,6 +144,7 @@ struct cros_ec_device {
>> struct cros_ec_command *msg);
>> int (*pkt_xfer)(struct cros_ec_device *ec,
>> struct cros_ec_command *msg);
>> + struct power_supply *charger;
>> struct mutex lock;
>> bool mkbp_event_supported;
>> struct blocking_notifier_head event_notifier;
>
> I think cros_ec_device->charger can be dropped:
>
> * It is not cleared on power-supply removal
> * It randomly points to the last registered power-supply
> * It is only set, but never used
>

Good catch, a v4 fixing this will be send very soon.

> -- Sebastian
>