[PATCH] usb: onboard-hub: Don't disable regulator in remove() callback

[Marek Vasut]

On 4/18/23 09:21, Patrice CHOTARD wrote:
> Hi Marek

Hello Patrice,

> On 4/17/23 19:00, Marek Vasut wrote:
>> On 4/17/23 18:56, Patrice Chotard wrote:
>>> In case USB hub regulator is shared, unexpected behavior occurs.
>>> On stm32mp135f-dk, stm32mp157c-ev1 and stm32mp157x-dkx, regulator
>>> v3v3 is shared between several IP/devices (USB, panel, ethernet phy,
>>> camera, ...).
>>> Running command "usb stop", v3v3 regulator is switched off and
>>> the splashscreen content disappear.
>>>
>>> v3v3 shouldn't be disabled on usb_onboard_hub_remove() callback.
>>
>> Isn't the regulator enable/disable refcounted ?
> 
> There is no refcount on regulator that's why we let regulator enable.

Can we add that, instead of hacking around the missing refcount in every 
driver ?