[Intel-gfx] [PATCH 1/1] drm: add error message for ENOSPC

[Bommu Krishnaiah]

add error message for ENOSPC, this will help developer to understand issue.

Signed-off-by: Bommu Krishnaiah <krishnaiah.bo...@intel.com>
Cc: Yang Shi <yang.a....@intel.com>
Cc: Nayana Venkata Ramana <venkata.ramana.nay...@intel.com>
---
 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

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx