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authorArnd Bergmann <arnd@arndb.de>2023-02-14 11:30:49 +0100
committerDan Williams <dan.j.williams@intel.com>2023-02-14 08:38:20 -0800
commit0c16c83ed57fc66b033306ba426a5b324966a33e (patch)
treebf62e365a781311671beb099d6cf10cd9db84b19
parent7abcb0b10668eaf3c174ff383f3b2a7a8c95fb34 (diff)
dax: cxl: add CXL_REGION dependency
There is already a dependency on CXL_REGION, which depends on CXL_BUS, but since CXL_REGION is a 'bool' symbol, it's possible to configure DAX as built-in even though CXL itself is a loadable module: x86_64-linux-ld: drivers/dax/cxl.o: in function `cxl_dax_region_probe': cxl.c:(.text+0xb): undefined reference to `to_cxl_dax_region' x86_64-linux-ld: drivers/dax/cxl.o: in function `cxl_dax_region_driver_init': cxl.c:(.init.text+0x10): undefined reference to `__cxl_driver_register' x86_64-linux-ld: drivers/dax/cxl.o: in function `cxl_dax_region_driver_exit': cxl.c:(.exit.text+0x9): undefined reference to `cxl_driver_unregister' Prevent this with another depndency on the tristate symbol. Fixes: 09d09e04d2fc ("cxl/dax: Create dax devices for CXL RAM regions") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20230214103054.1082908-1-arnd@kernel.org Signed-off-by: Dan Williams <dan.j.williams@intel.com>
-rw-r--r--drivers/dax/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dax/Kconfig b/drivers/dax/Kconfig
index bd06e16c7ac8..7e1008d756b8 100644
--- a/drivers/dax/Kconfig
+++ b/drivers/dax/Kconfig
@@ -47,7 +47,7 @@ config DEV_DAX_HMEM
config DEV_DAX_CXL
tristate "CXL DAX: direct access to CXL RAM regions"
- depends on CXL_REGION && DEV_DAX
+ depends on CXL_BUS && CXL_REGION && DEV_DAX
default CXL_REGION && DEV_DAX
help
CXL RAM regions are either mapped by platform-firmware