[Intel-wired-lan] suspend/resume broken of igc driver broken on 6.12

[Stephen Hemminger <stephen@networkplumber.org>]

I am using:

5a:00.0 Ethernet controller: Intel Corporation Ethernet Controller I226-LM (rev 04)
	Subsystem: Intel Corporation Device 0000
	Flags: bus master, fast devsel, latency 0, IRQ 19, IOMMU group 20
	Memory at 6c500000 (32-bit, non-prefetchable) [size=1M]
	Memory at 6c600000 (32-bit, non-prefetchable) [size=16K]
	Capabilities: [40] Power Management version 3
	Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
	Capabilities: [70] MSI-X: Enable+ Count=5 Masked-
	Capabilities: [a0] Express Endpoint, IntMsgNum 0
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [140] Device Serial Number 58-47-ca-ff-ff-7a-98-3d
	Capabilities: [1c0] Latency Tolerance Reporting
	Capabilities: [1f0] Precision Time Measurement
	Capabilities: [1e0] L1 PM Substates
	Kernel driver in use: igc
	Kernel modules: igc


Using both Debian testing and my own kernel built from 6.12, the igc
driver appears broken after resume.

After resuming the device is down and no address present.
Attempts to set link up manually fail.
If I do rmmod/modprobe of igc it comes back.

Doing a bit of bisectting but it is slow going.