[PATCH 2/2] drm: Restrict stackdepot usage to builtin drm.ko

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I misread the kbuild result thinking that we had missed the include
(which we had for completeness anyway), what kbuild was actually warning
me about was that depot_save_stack was not exported.

Temporarily fix this by only selecting STACKDEPOT iff drm.ko is builtin

Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Fixes: 5705670d0463 ("drm: Track drm_mm allocators and show leaks on shutdown")
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 25e8e3793d29..d6ee0592b625 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -36,7 +36,7 @@ config DRM_DP_AUX_CHARDEV
 config DRM_DEBUG_MM
 	bool "Insert extra checks and debug info into the DRM range managers"
 	default n
-	depends on DRM
+	depends on DRM=y
 	select STACKDEPOT
 	help
 	  Enable allocation tracking of memory manager and leak detection on
-- 
2.10.2

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