[PATCH] drm: Make DRM_DEBUG_MM depend on STACKTRACE_SUPPORT

[Chris Wilson]

0day continues to complain about trying to save a stacktrace for the
users of the drm_mm range allocator. This time, it is that m68k has no
save_stack_trace(), which is apparently guarded by STACKTRACE_SUPPORT.
Make it depend so!

Reported-by: kbuild test robot <fengguang.wu at intel.com>
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index dd3d9ae97fe4..9f10c148a4b0 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -37,6 +37,7 @@ config DRM_DEBUG_MM
 	bool "Insert extra checks and debug info into the DRM range managers"
 	default n
 	depends on DRM=y
+	depends on STACKTRACE_SUPPORT
 	select STACKDEPOT
 	help
 	  Enable allocation tracking of memory manager and leak detection on
-- 
2.10.2