[PATCH] drm/dp_mst: Fix build on systems with STACKTRACE_SUPPORT=n
From: Guenter Roeck
Date: Mon Dec 02 2019 - 08:36:57 EST
On systems with STACKTRACE_SUPPORT=n, we get:
WARNING: unmet direct dependencies detected for STACKTRACE
Depends on [n]: STACKTRACE_SUPPORT
Selected by [y]:
- STACKDEPOT [=y]
and build errors such as:
m68k-linux-ld: kernel/stacktrace.o: in function `stack_trace_save':
(.text+0x11c): undefined reference to `save_stack_trace'
Add the missing deendency on STACKTRACE_SUPPORT.
Fixes: 12a280c72868 ("drm/dp_mst: Add topology ref history tracking for debugging")
Cc: Lyude Paul <lyude@xxxxxxxxxx>
Cc: Sean Paul <sean@xxxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/gpu/drm/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 1168351267fd..bfdadc3667e0 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -95,6 +95,7 @@ config DRM_KMS_FB_HELPER
config DRM_DEBUG_DP_MST_TOPOLOGY_REFS
bool "Enable refcount backtrace history in the DP MST helpers"
+ depends on STACKTRACE_SUPPORT
select STACKDEPOT
depends on DRM_KMS_HELPER
depends on DEBUG_KERNEL
--
2.17.1