On 2023-09-02 18:56, Guenter Roeck wrote:
> On 9/2/23 15:29, Thomas Weißschuh wrote:
>> Hi,
>>
>> On 2023-09-02 18:36:17+0200, Christophe JAILLET wrote:
>>> Le 02/09/2023 à 09:47, Thomas Weißschuh a écrit :
>>>> POWER-Z is a series of devices to monitor power characteristics of
>>>> USB-C connections and display those on a on-device display.
>>>> Some of the devices, notably KM002C and KM003C, contain an additional
>>>> port which exposes the measurements via USB.
>>>>
>>>> This is a driver for this monitor port.
>>>>
>>>> It was developed and tested with the KM003C.
>>>>
>>>> Signed-off-by: Thomas Weißschuh <[email protected]>
>>>> ---
>>>
>>> ...
>>>
>>>> +static int powerz_probe(struct usb_interface *intf,
>>>> + const struct usb_device_id *id)
>>>> +{
>>>> + struct powerz_priv *priv;
>>>> + struct device *hwmon_dev;
>>>> + struct device *parent;
>>>> +
>>>> + parent = &intf->dev;
>>>> +
>>>> + priv = devm_kzalloc(parent, sizeof(*priv), GFP_KERNEL);
>>>> + if (!priv)
>>>> + return -ENOMEM;
>>>> +
>>>> + priv->urb = usb_alloc_urb(0, GFP_KERNEL);
>>>> + if (!priv->urb)
>>>> + return -ENOMEM;
>>>> + mutex_init(&priv->mutex);
>>>> + priv->status = -ETIMEDOUT;
>>>> + init_completion(&priv->completion);
>>>> +
>>>> + hwmon_dev =
>>>> + devm_hwmon_device_register_with_info(parent, DRIVER_NAME, priv,
>>>> + &powerz_chip_info, NULL);
>>>> + usb_set_intfdata(intf, priv);
>>>> +
>>>> + return PTR_ERR_OR_ZERO(hwmon_dev);
>>>
>>> Hi,
>>>
>>> If 'hwmon_dev' is an PTR_ERR, priv->urb leaks.
>>
>> Good catch, thanks!
>>
>>
>> Guenter,
>>
>> it seems the new hwmon-next with this driver has not yet been pushed to
>> git.kernel.org, so I can't generate the Fixes tag.
>>
>
> Rule is that I must not push anything into linux-next until
> after v6.6-rc1 has been released.
>
>> Can you modify the commit to also contain the changes below?
>> Or let me know if you prefer something else.
>>
>
> I'll update the patch and make the change.
Hi,
While you are at it, you can make the driver detect the earlier model KM002C:
--- powerz.c_orig 2023-09-02 13:47:14.754705791 -0400
+++ powerz.c 2023-09-02 23:22:54.783856587 -0400
@@ -250,6 +250,7 @@
static const struct usb_device_id powerz_id_table[] = {
{ USB_DEVICE_INTERFACE_NUMBER(0x5FC9, 0x0063, 0x00) }, /* ChargerLAB POWER-Z
KM003C */
+ { USB_DEVICE_INTERFACE_NUMBER(0x5FC9, 0x0061, 0x00) }, /* ChargerLAB POWER-Z
KM002C */
{ }
};
Do you want a "Tested-by" on the patch as well?
Doug Gilbert