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| author | Arnd Bergmann <arnd@arndb.de> | 2023-02-14 11:30:49 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2023-02-14 08:38:20 -0800 |
| commit | 0c16c83ed57fc66b033306ba426a5b324966a33e (patch) | |
| tree | bf62e365a781311671beb099d6cf10cd9db84b19 /drivers | |
| parent | 7abcb0b10668eaf3c174ff383f3b2a7a8c95fb34 (diff) | |
| download | lwn-0c16c83ed57fc66b033306ba426a5b324966a33e.tar.gz lwn-0c16c83ed57fc66b033306ba426a5b324966a33e.zip | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/dax/Kconfig | 2 |
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 |