From: Arnd Bergmann <arnd@kernel.org>
To: Edward Cree <ecree.xilinx@gmail.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Dave Jiang <dave.jiang@intel.com>, Dan Williams <djbw@kernel.org>,
Alejandro Lucero <alucerop@amd.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Alison Schofield <alison.schofield@intel.com>,
netdev@vger.kernel.org, linux-net-drivers@amd.com,
linux-kernel@vger.kernel.org
Subject: [PATCH] sfc: fix CONFIG_CXL_MEM dependency
Date: Thu, 17 Sep 2026 17:55:11 +0200 [thread overview]
Message-ID: <20260917155519.2121486-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
A recent patch introduced a call to devm_cxl_probe_mem(), which is only
available when CXL_MEM is enabled. If CXL_MEM is in a loadable module,
this causes a link failure for a builtin driver:
s390-linux-ld: drivers/net/ethernet/sfc/efx_cxl.o: in function `efx_cxl_init':
efx_cxl.c:(.text+0x156): undefined reference to `devm_cxl_probe_mem'
Adapt the dependency to require CXL_MEM instead of CXL_BUS, which
we know is available when CXL_MEM is.
Fixes: 0418860ef2ca ("sfc: obtain and map cxl range using devm_cxl_probe_mem")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/net/ethernet/sfc/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/sfc/Kconfig b/drivers/net/ethernet/sfc/Kconfig
index 979f2801e2a8..e2898ec2e6e9 100644
--- a/drivers/net/ethernet/sfc/Kconfig
+++ b/drivers/net/ethernet/sfc/Kconfig
@@ -68,7 +68,7 @@ config SFC_MCDI_LOGGING
a sysfs file 'mcdi_logging' under the PCI device.
config SFC_CXL
bool "Solarflare SFC9100-family CXL support"
- depends on SFC && CXL_BUS >= SFC
+ depends on SFC && CXL_MEM >= SFC
default SFC
help
This enables SFC CXL support if the kernel is configuring CXL for
--
2.53.0
next reply other threads:[~2026-09-17 15:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-17 15:55 Arnd Bergmann [this message]
2026-09-21 7:43 ` [PATCH] sfc: fix CONFIG_CXL_MEM dependency Lucero Palau, Alejandro
2026-09-21 23:20 ` patchwork-bot+netdevbpf
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