Re: [PATCH v4] USB: core: skip unconfiguration if device doesn't support it

[Jose Ignacio Tornos Martinez <jtornosm@redhat.com>]

Hello Oliver,

No worries, as you said, Bjorn has provided a perfect test.

Yes, I have considered but I have thought that a clean and fast
solution is enough, that is, suspending everything from the driver,
because a new configuration is going to be applied when binding again
from local or remote.
Device reset may have other implications and as you commented soft
unbinding is not a common operation at least without binding again.

Best regards
José Ignacio

On Thu, May 5, 2022 at 2:07 PM Oliver Neukum <oneukum@suse.com> wrote:
>
>
>
> On 05.05.22 13:15, Jose Ignacio Tornos Martinez wrote:
> > Hello Oliver,
> >
> > Of course, I am working with usbip to remotize usb devices, that is
> > the reason why unbind/bind is needed and with the btusb devices that I
> > have, it was not working.
> >
> >
>
> Hi,
>
> sorry for being unclear. I was not referring to positive
> knowledge about the devices you are testing with.
> I was having dark thoughts about the other devices
> they are sharing an ID with.
> But Bjorn's testing has resolved that. In that case
> we can indeed not penalize the compliant devices
> for the broken ones.
>
> One question, though. Your approach of simply doing
> nothing if config 0 is to be selected again is a bit
> brutal. Have you considered resetting the device
> and stopping the reenumeration right as a config
> is supposed to be chosen?
>
>     Regards
>         Oliver
>