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drm: Fix application of color vs range restriction when scanning drm_mm 

The range restriction should be applied after the color adjustment, or
else we may inadvertently apply the color adjustment to the restricted
hole (and not against its neighbours).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-30-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-12-22 08:36:32 +00:00 committed by Daniel Vetter
parent 2c4b389518
commit 268c6498fb
1 changed files with 9 additions and 6 deletions
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15
drivers/gpu/drm/drm_mm.c
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@ -772,6 +772,7 @@ bool drm_mm_scan_add_block(struct drm_mm_scan *scan,
struct drm_mm *mm = scan->mm;
struct drm_mm_node *hole;
u64 hole_start, hole_end;
u64 col_start, col_end;
u64 adj_start, adj_end;
DRM_MM_BUG_ON(node->mm != mm);
@ -789,14 +790,16 @@ bool drm_mm_scan_add_block(struct drm_mm_scan *scan,
node->node_list.next = &scan->prev_scanned_node->node_list;
scan->prev_scanned_node = node;
hole_start = drm_mm_hole_node_start(hole);
hole_end = drm_mm_hole_node_end(hole);
adj_start = max(hole_start, scan->range_start);
adj_end = min(hole_end, scan->range_end);
hole_start = __drm_mm_hole_node_start(hole);
hole_end = __drm_mm_hole_node_end(hole);
col_start = hole_start;
col_end = hole_end;
if (mm->color_adjust)
mm->color_adjust(hole, scan->color, &adj_start, &adj_end);
mm->color_adjust(hole, scan->color, &col_start, &col_end);
adj_start = max(col_start, scan->range_start);
adj_end = min(col_end, scan->range_end);
if (check_free_hole(adj_start, adj_end,
scan->size, scan->alignment)) {