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drm/dp_mst: Fix build on systems with STACKTRACE_SUPPORT=n

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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: 12a280c728 ("drm/dp_mst: Add topology ref history tracking for debugging")
Cc: Lyude Paul <lyude@redhat.com>
Cc: Sean Paul <sean@poorly.run>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202133650.11964-1-linux@roeck-us.net
This commit is contained in:
Guenter Roeck 2019-12-02 05:36:50 -08:00 committed by Lyude Paul
parent 1591fadf85
commit d6d07ca19c
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/Kconfig
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@ -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