Wow. I haven’t needed to compile a kernel for maybe a decade.
Did you write that or find it (where?). Has it been reported to the kernel
folks and/or debian or raspios folks ? Any idea how long it takes to
recompile on a pi5 ?
Great find.
On Wednesday, February 25, 2026 at 4:53:05 PM UTC-8 Craig (craiger) wrote:
> A little closer inspection, this kernel patch should fix it, so either
> apply... or, just wait for a backport. In any event, acurite isn't going
> to work on a Pi5 which requires the broken kernel (6.12) right now.
>
>
> diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
> index aac0051a2cf6..758eb21430cd 100644
> --- a/drivers/hid/usbhid/hid-core.c
> +++ b/drivers/hid/usbhid/hid-core.c
> @@ -985,6 +985,7 @@ static int usbhid_parse(struct hid_device *hid)
> struct usb_device *dev = interface_to_usbdev (intf);
> struct hid_descriptor *hdesc;
> struct hid_class_descriptor *hcdesc;
> + __u8 fixed_opt_descriptors_size;
> u32 quirks = 0;
> unsigned int rsize = 0;
> char *rdesc;
> @@ -1015,7 +1016,21 @@ static int usbhid_parse(struct hid_device *hid)
> (hdesc->bNumDescriptors - 1) * sizeof(*hcdesc)) {
> dbg_hid("hid descriptor invalid, bLen=%hhu bNum=%hhu\n",
> hdesc->bLength, hdesc->bNumDescriptors);
> - return -EINVAL;
> +
> + /*
> + * Some devices may expose a wrong number of descriptors compared
> + * to the provided length.
> + * However, we ignore the optional hid class descriptors entirely
> + * so we can safely recompute the proper field.
> + */
> + if (hdesc->bLength >= sizeof(*hdesc)) {
> + fixed_opt_descriptors_size = hdesc->bLength - sizeof(*hdesc);
> +
> + hid_warn(intf, "fixing wrong optional hid class descriptors count\n");
> + hdesc->bNumDescriptors = fixed_opt_descriptors_size / sizeof(*hcdesc) +
> 1;
> + } else {
> + return -EINVAL;
> + }
> }
>
> hid->version = le16_to_cpu(hdesc->bcdHID);
> --
> 2.51.1
>
> ---
>
>
> On Wednesday, 25 February 2026 at 16:01:48 UTC-8 Craig (craiger) wrote:
>
>> Hi weewx folks!
>>
>> Per title, connecting an Acurite USB station to a Raspberry P5 running
>> Raspberry Pi OS Trixie results in failure,
>>
>> [33809.965648] usb 1-2: Product: Chaney Instrument
>> [33809.977730] usbhid 1-2:1.0: can't add hid device: -22
>> [33809.977742] usbhid 1-2:1.0: probe with driver usbhid failed with
>> error -22
>>
>>
>> On Raspberry Pi OS Bookworm, it works as expected
>>
>> [ 2.558137] usbcore: registered new interface driver usbhid
>> [ 2.560725] usbhid: USB HID core driver
>>
>>
>> I know this isn't exactly a weewx thing, but I thought I'd mention it in
>> the event somebody has a workaround, otherwise, the best plan is to stay on
>> an old/unsupported OS because the debian developers appeared to have done
>> something I'm sure they thought was clever in libusb/udev for Trixie.
>>
>> best,
>> -edfardos
>>
>>
>>
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