device-dax: Tell kbuild DEV_DAX_PMEM depends on DEV_DAX

ERROR: "devm_create_dev_dax" [drivers/dax/dax_pmem.ko] undefined!
ERROR: "alloc_dax_region" [drivers/dax/dax_pmem.ko] undefined!
ERROR: "dax_region_put" [drivers/dax/dax_pmem.ko] undefined!

Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/dax/Kconfig b/drivers/dax/Kconfig
index b7053ea..6b7e20e 100644 (file)
--- a/drivers/dax/Kconfig
+++ b/drivers/dax/Kconfig
@@ -19,7 +19,7 @@ config DEV_DAX
 
 config DEV_DAX_PMEM
        tristate "PMEM DAX: direct access to persistent memory"
-       depends on LIBNVDIMM && NVDIMM_DAX
+       depends on LIBNVDIMM && NVDIMM_DAX && DEV_DAX
        default DEV_DAX
        help
          Support raw access to persistent memory.  Note that this