Re: [PATCH] usb: musb: Force-disable pullup on shutdown

[Paul Cercueil]

Le lun. 1 avril 2019 à 19:17, Bin Liu <b-liu@xxxxxx> a écrit :
> On Thu, Mar 21, 2019 at 03:42:46PM +0100, Paul Cercueil wrote:
> >  When the musb is shutdown, for instance when the driver is unloaded,
> >  force-disable the pullup. Otherwise, the host will still see the 
> > gadget
> >  device even after the shutdown.
>
> how would this happen?
>
> when musb-hdrc driver is unloaded, udc core removes the bound gadget
> driver which calls musb_gadget_pullup() to disable the pullup.

I'm testing with the jz4740-musb driver. I don't unload the module (it's
built-in) but unbind it from sysfs.

> Regards,
> -Bin.