Re: [PATCH v2 RESEND] usb: gadget: udc-core: Rescan pending list on driver unbind

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Hi,

Krzysztof Opasiak <k.opasiak@xxxxxxxxxxx> writes:
> Since:
>
> commit 855ed04a3758 ("usb: gadget: udc-core: independent registration
> of gadgets and gadget drivers")
>
> if we load gadget module but there is no free udc available
> then it will be stored on a pending gadgets list.
>
> $ modprobe g_zero.ko
> $ modprobe g_ether.ko
> [] udc-core: couldn't find an available UDC - added [g_ether] to list
> of pending drivers
>
> We scan this list each time when new UDC appears in system.
> But we can get a free UDC each time after gadget unbind.
> This commit add scanning of that list directly after unbinding
> gadget from udc.
>
> Thanks to this, when we unload first gadget:
>
> $ rmmod g_zero.ko
>
> gadget which is pending is automatically
> attached to that UDC (if name matches).
>
> Signed-off-by: Krzysztof Opasiak <k.opasiak@xxxxxxxxxxx>

Do we need to Cc stable on this?

-- 
balbi

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