Re: [PATCH i-g-t 2/7] lib/igt_device_scan: Split out reusable part of update_or_add_parent

[Sebastian Brzezinka <sebastian.brzezinka@intel.com>]

Hi Janusz,

On Wed Jan 21, 2026 at 12:42 PM CET, Janusz Krzysztofik wrote:
> Users of Intel discrete graphics adapters are confused with fake
> information on PCIe link bandwidth (speed and size) of their GPU devices
> reported by sysfs and userspace tools, including our lsgpu utility.  In
> order for the lsgpu to show correct link bandwidth information, we need to
> identify an upstream port of a PCIe bridge that sits on the GPU card and
> get that information from that port.
>
> Since the tool uses our udev based igt_device_scan library for identifying
> GPU devices and printing their properties and attributes, modifications
> that we need apply to that library.
>
> Refactor the library so a part of it can be reused for processing the
> bridge port.
>
> There are no functional changes introduced with this patch.
>
> Link: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10753
> Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
> ---
Straightforward refactor. Looks good!
Reviewed-by: Sebastian Brzezinka <sebastian.brzezinka@intel.com>

-- 
Best regards,
Sebastian