Re: [PATCH] hwmon: (aquacomputer_d5next) Add AMPINEL support

[Vas Zayarskiy <contact@vasily.cc>]

> Would it be better to add a hid_is_usb(hdev) check before attempting this
> cast?

Thanks for catching this. HID_USB_DEVICE() only matches the advertised bus;
UHID can supply BUS_USB while using a different low-level transport and a
non-USB parent. The cast therefore needs an actual transport check.

I have prepared v2 with hid_is_usb(hdev) checked before to_usb_interface(),
returning -ENODEV for other transports. A probe-prefix userspace harness
reaches the invalid-parent cast with v1 and rejects it before the cast with
v2. The real-USB telemetry and keyboard paths also pass the harness checks.

The revised module builds on 7.2.5; x86_64 and i386 object builds, sparse and
the 995-report parser replay pass. No crashing UHID device was created on
the host during testing.

Thanks,
Vas