The INTERVAL_TREE_DEFINE() uncoditionally provides a bunch of helper
functions which in some cases may be not used. This, in particular,
prevents kernel builds with `make W=1` and CONFIG_WERROR=y:
.../drm/drm_mm.c:152:1: error: unused function 'drm_mm_interval_tree_insert' [-Werror,-Wunused-function]
152 | INTERVAL_TREE_DEFINE(struct drm_mm_node, rb,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
153 | u64, __subtree_last,
| ~~~~~~~~~~~~~~~~~~~~
154 | START, LAST, static inline, drm_mm_interval_tree)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix this by marking drm_mm_interval_tree*() functions with __maybe_unused.
Fixes: 202b52b7fbf7 ("drm: Track drm_mm nodes with an interval tree")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_mm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index 5ace481c1901..1ed68d3cd80b 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -151,7 +151,7 @@ static void show_leaks(struct drm_mm *mm) { }
INTERVAL_TREE_DEFINE(struct drm_mm_node, rb,
u64, __subtree_last,
- START, LAST, static inline, drm_mm_interval_tree)
+ START, LAST, static inline __maybe_unused, drm_mm_interval_tree)
struct drm_mm_node *
__drm_mm_interval_first(const struct drm_mm *mm, u64 start, u64 last)
--
2.43.0.rc1.1336.g36b5255a03ac
