add error message for ENOSPC, this will help developer to understand issue.
Signed-off-by: Bommu Krishnaiah <krishnaiah.bommu@xxxxxxxxx>
Cc: Yang Shi <yang.a.shi@xxxxxxxxx>
Cc: Nayana Venkata Ramana <Venkata.Ramana.Nayana@xxxxxxxxx>
---
drivers/gpu/drm/drm_mm.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index a4a04d246135..696b59673a84 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -458,13 +458,18 @@ int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node)
u64 end;
end = node->start + node->size;
- if (unlikely(end <= node->start))
+ if (unlikely(end <= node->start)) {
+ DRM_DEBUG("ENOSPC with incorrect node->size %llx\n", node->size);
return -ENOSPC;
+ }
/* Find the relevant hole to add our node to */
hole = find_hole_addr(mm, node->start, 0);
- if (!hole)
+ if (!hole) {
+ DRM_DEBUG("ENOSPC when not find hole with node->start %llx\n",
+ node->start);
return -ENOSPC;
+ }
adj_start = hole_start = __drm_mm_hole_node_start(hole);
adj_end = hole_end = hole_start + hole->hole_size;
@@ -472,8 +477,11 @@ int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node)
if (mm->color_adjust)
mm->color_adjust(hole, node->color, &adj_start, &adj_end);
- if (adj_start > node->start || adj_end < end)
+ if (adj_start > node->start || adj_end < end) {
+ DRM_DEBUG("ENOSPC after adjust adj_start:%llx adj_end:%llx node->start:%llx end:%llx\n",
+ adj_start, adj_end, node->start, end);
return -ENOSPC;
+ }
node->mm = mm;
--
2.25.1
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