* [PATCH] sfc: fix CONFIG_CXL_MEM dependency
@ 2026-09-17 15:55 Arnd Bergmann
0 siblings, 0 replies; only message in thread
From: Arnd Bergmann @ 2026-09-17 15:55 UTC (permalink / raw)
To: Edward Cree, Andrew Lunn, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, Dave Jiang, Dan Williams,
Alejandro Lucero
Cc: Arnd Bergmann, Jonathan Cameron, Alison Schofield, netdev,
linux-net-drivers, linux-kernel
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
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