[PATCH v1] drm: import DMA_BUF module namespace

[Marcel Ziswiler]

From: Marcel Ziswiler <marcel.ziswiler at toradex.com>

Today's -next fails building arm64 defconfig as follows:

ERROR: modpost: module drm_cma_helper uses symbol dma_buf_vunmap from
 namespace DMA_BUF, but does not import it.
ERROR: modpost: module drm_cma_helper uses symbol dma_buf_vmap from
 namespace DMA_BUF, but does not import it.

Reported-by: Linux Kernel Functional Testing <lkft at linaro.org>
Fixes: commit 4b2b5e142ff4 ("drm: Move GEM memory managers into modules")
Signed-off-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>

---

 drivers/gpu/drm/drm_gem_cma_helper.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c
index 6f7b3f8ec04d3..69f8564ad11cd 100644
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -23,6 +23,8 @@
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_vma_manager.h>
 
+MODULE_IMPORT_NS(DMA_BUF);
+
 /**
  * DOC: cma helpers
  *
-- 
2.26.2