APPLIED: [PATCH 0/1][SRU][N] Run iio_info will be stucked forever (HID-SENSOR-200011.5.auto/iio:device1)

[Stefan Bader]

On 23/10/2025 05:47, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/2102077
> 
> [Impact]
> The Chicony Electronics HP 5MP Camera (USB ID 04F2:B82C) reports a HID
> sensor interface that is not actually implemented. Attempting to access
> this non-functional sensor via iio_info causes system hangs as runtime PM
> tries to wake up an unresponsive sensor.
> 
> [Fix]
> Add this device to the HID ignore list since the sensor interface is
> non-functional by design and should not be exposed to userspace.
> https://lore.kernel.org/lkml/20250312063532.551938-1-acelan.kao@canonical.com/T/#u
> v2 https://patchwork.kernel.org/project/linux-input/patch/20250506055015.774509-1-acelan.kao@canonical.com/
> 
> [Test]
> 1. Boot up the machine with this USB camera(04F2:B82C)
> 2. Run iio_info, it should return the iio information immediately
> 
> [Where problems could occur]
> It's a quirk dedicated to a certain USB webcam, so it won't lead to other sesnors fail to work.
> 
> Chia-Lin Kao (AceLan) (1):
>    HID: quirks: Add quirk for 2 Chicony Electronics HP 5MP Cameras
> 
>   drivers/hid/hid-ids.h    | 2 ++
>   drivers/hid/hid-quirks.c | 2 ++
>   2 files changed, 4 insertions(+)
> 


Applied to noble:linux/master-next. Thanks.

-Stefan

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