linux-kernel - [PATCH net] net: bnge: add AUXILIARY

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Message-ID: <20251228-bnge_aux_bus-v1-1-82e273ebfdac@blochl.de>
Date: Sun, 28 Dec 2025 16:52:59 +0100
From: Markus Blöchl <markus@...chl.de>
To: Andrew Lunn <andrew+netdev@...n.ch>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Vikas Gupta <vikas.gupta@...adcom.com>, Leon Romanovsky <leon@...nel.org>, 
	Siva Reddy Kallam <siva.kallam@...adcom.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Markus Blöchl <markus@...chl.de>
Subject: [PATCH net] net: bnge: add AUXILIARY_BUS to Kconfig dependencies

The build can currently fail with

    ld: drivers/net/ethernet/broadcom/bnge/bnge_auxr.o: in function `bnge_rdma_aux_device_add':
    bnge_auxr.c:(.text+0x366): undefined reference to `__auxiliary_device_add'
    ld: drivers/net/ethernet/broadcom/bnge/bnge_auxr.o: in function `bnge_rdma_aux_device_init':
    bnge_auxr.c:(.text+0x43c): undefined reference to `auxiliary_device_init'

if BNGE is enabled but no other driver pulls in AUXILIARY_BUS.

Select AUXILIARY_BUS in BNGE like in all other drivers which create
an auxiliary_device.

Fixes: 8ac050ec3b1c ("bng_en: Add RoCE aux device support")
Signed-off-by: Markus Blöchl <markus@...chl.de>
---
Basic steps to reproduce:
- make allnoconfig
- manually enable just PCI, NETDEVICES, ETHERNET, NET_VENDOR_BROADCOM and BNGE
- make
---
 drivers/net/ethernet/broadcom/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/broadcom/Kconfig b/drivers/net/ethernet/broadcom/Kconfig
index ca565ace6e6a..cd7dddeb91dd 100644
--- a/drivers/net/ethernet/broadcom/Kconfig
+++ b/drivers/net/ethernet/broadcom/Kconfig
@@ -259,6 +259,7 @@ config BNGE
 	depends on PCI
 	select NET_DEVLINK
 	select PAGE_POOL
+	select AUXILIARY_BUS
 	help
 	  This driver supports Broadcom ThorUltra 50/100/200/400/800 gigabit
 	  Ethernet cards. The module will be called bng_en. To compile this

---
base-commit: 4d1442979e4a53b9457ce1e373e187e1511ff688
change-id: 20251228-bnge_aux_bus-4acb743203b5

Best regards,
-- 
Markus Blöchl <markus@...chl.de>


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