Summary: after kexec, iwlwifi probe on 0000:00:14.3 fails with -110.
A clean boot works. Echoing 1 to the device's remove then to
/sys/bus/pci/rescan recovers it without reboot. A PCI reset does not.

I have not tested this on a newer BIOS, it may very well fix this issue,
however that is a hard ask for most and the issue is fixable past boot.

I use the Gentoo kexec OpenRC service for setting up kexec,
which just boots the last kernel used by default.

Bluetooth seems to be available, however I don't use Bluetooth to any extent.


Effective Repeatable Solution:

echo 1 > /sys/bus/pci/devices/0000:00:14.3/remove
echo 1 > /sys/bus/pci/rescan

Note that I ran a reset too (to no apparent change) before the
remove/rescan in the below log.


Kernel (standard and untouched USE flag wise):

6.18.54-gentoo-dist-hardened
sys-kernel/linux-firmware-20260916
(note: older kernel versions in the 6.1x group had the same results)


Hardware:

Board Vendor	: MSI
Board Name	: PRO B760-P WIFI (MS-7D98)
Board Version	: 2.0
BIOS Vendor	: American Megatrends International, LLC.
Bios Version	: A.Q3
BIOS date	: 08/29/2023


Truncated Logs (see dmesg.log attachment):

00:14.3 Network controller [0280]: Intel Corporation 700 Series Chipset CNVi WiFi [8086:7a70] (rev 11)

[    6.560889] iwlwifi 0000:00:14.3: CSR_RESET = 0x10
[    6.560892] iwlwifi 0000:00:14.3: Host monitor block 0x0 vector 0x0
[    6.560915] iwlwifi 0000:00:14.3:     value [iter 0]: 0x3f1d0430
...
[    6.610796] iwlwifi 0000:00:14.3: probe with driver iwlwifi failed with error -110
[  732.520454] iwlwifi 0000:00:14.3: Detected crf-id 0x400410, cnv-id 0x80401 wfpm id 0x80000020
[  732.520490] iwlwifi 0000:00:14.3: PCI dev 7a70/0094, rev=0x430, rfid=0x2010d000
[  732.520499] iwlwifi 0000:00:14.3: Detected Intel(R) Wi-Fi 6E AX211 160MHz
[  732.520992] Loading firmware: iwlwifi-so-a0-gf-a0-89.ucode
[  732.533758] iwlwifi 0000:00:14.3: loaded firmware version 89.d2579d43.0 so-a0-gf-a0-89.ucode op_mode iwlmvm