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Message-ID: <939a51b6-25f7-2cb1-d86e-0bcead931876@molgen.mpg.de>
Date:   Mon, 27 Feb 2023 15:34:25 +0100
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     Gregory Greenman <gregory.greenman@...el.com>,
        Kalle Valo <kvalo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: What to do about warnings: `WRT: Overriding region id X`

Dear Linux folks,


On a Dell Precision 3540, BIOS 1.23.0 12/19/2022, with Debian 
sid/unstable, Linux 6.1.12 logs the warnings below.

```
$ lspci -nn -s 00:14.3 -kv
00:14.3 Network controller [0280]: Intel Corporation Cannon Point-LP 
CNVi [Wireless-AC] [8086:9df0] (rev 30)
	DeviceName: Onboard - Ethernet
	Subsystem: Intel Corporation Cannon Point-LP CNVi [Wireless-AC] [8086:4030]
	Flags: bus master, fast devsel, latency 0, IRQ 16, IOMMU group 6
	Memory at ec43c000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi
```

```
$ dmesg
[…]
[   20.753295] iwlwifi 0000:00:14.3: firmware: direct-loading firmware 
iwlwifi-9000-pu-b0-jf-b0-46.ucode
[   20.753313] iwlwifi 0000:00:14.3: WRT: Overriding region id 0
[   20.753314] iwlwifi 0000:00:14.3: WRT: Overriding region id 1
[   20.753315] iwlwifi 0000:00:14.3: WRT: Overriding region id 2
[   20.753316] iwlwifi 0000:00:14.3: WRT: Overriding region id 3
[   20.753317] iwlwifi 0000:00:14.3: WRT: Overriding region id 4
[   20.753318] iwlwifi 0000:00:14.3: WRT: Overriding region id 6
[   20.753319] iwlwifi 0000:00:14.3: WRT: Overriding region id 8
[   20.753320] iwlwifi 0000:00:14.3: WRT: Overriding region id 9
[   20.753320] iwlwifi 0000:00:14.3: WRT: Overriding region id 10
[   20.753321] iwlwifi 0000:00:14.3: WRT: Overriding region id 11
[   20.753322] iwlwifi 0000:00:14.3: WRT: Overriding region id 15
[   20.753323] iwlwifi 0000:00:14.3: WRT: Overriding region id 16
[   20.753324] iwlwifi 0000:00:14.3: WRT: Overriding region id 18
[   20.753325] iwlwifi 0000:00:14.3: WRT: Overriding region id 19
[   20.753326] iwlwifi 0000:00:14.3: WRT: Overriding region id 20
[   20.753326] iwlwifi 0000:00:14.3: WRT: Overriding region id 21
[   20.753327] iwlwifi 0000:00:14.3: WRT: Overriding region id 28
[   20.753642] iwlwifi 0000:00:14.3: firmware: failed to load 
iwl-debug-yoyo.bin (-2)
[   20.753643] firmware_class: See https://wiki.debian.org/Firmware for 
information about missing firmware
[   20.753651] iwlwifi 0000:00:14.3: firmware: failed to load 
iwl-debug-yoyo.bin (-2)
[   20.753653] iwlwifi 0000:00:14.3: loaded firmware version 
46.6b541b68.0 9000-pu-b0-jf-b0-46.ucode op_mode iwlmvm
[…]
```

What can a user do about these warnings?


Kind regards,

Paul

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