Re: [PATCH v2 2/2] usb: misc: onboard_hub: Fail silently when there is no platform device

[Greg Kroah-Hartman]

On Thu, Dec 22, 2022 at 02:26:45AM +0000, Matthias Kaehlcke wrote:
> Some boards with an onboard USB hub supported by the onboard_hub
> driver have a device tree node for the hub, but the node doesn't
> specify all properties needed by the driver (which is not a DT
> error per se). For such a hub no onboard_hub platform device is
> created. However the USB portion of the onboard hub driver still
> probes and uses _find_onboard_hub() to find the platform device
> that corresponds to the hub. If the DT node of the hub doesn't
> have an associated platform device the function looks for a
> "peer-hub" node (to get the platform device from there), if
> that doesn't exist either it logs an error and returns -EINVAL.
> 
> The absence of a platform device is expected in some
> configurations, so drop the error log and fail silently with
> -ENODEV.
> 
> Fixes: 8bc063641ceb ("usb: misc: Add onboard_usb_hub driver")
> Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
> ---
> 
> Changes in v2:
> - patch added to the series
> 
>  drivers/usb/misc/onboard_usb_hub.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>