mirror of https://gitee.com/openkylin/linux.git
drm/i915: Fix comparison bug
->stolen->start has type u64 aka unsigned long long; relying on the
difference (effectively cast to int) for sorting is wrong.
It wouldn't be a problem in practice if the values compared are always
within INT_MAX of each other (so that the difference is actually
representable in an int), but 440fd5283a
("drm/mm: Support 4 GiB and
larger ranges") strongly suggests that's not the case.
Note: atm we don't support more than about 1G of stolen, so this is
impossible currenlty.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
[danvet: Add note that this is impossible currently.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
parent
120f5d2871
commit
2d05fa16fe
|
@ -253,7 +253,11 @@ static int obj_rank_by_stolen(void *priv,
|
||||||
struct drm_i915_gem_object *b =
|
struct drm_i915_gem_object *b =
|
||||||
container_of(B, struct drm_i915_gem_object, obj_exec_link);
|
container_of(B, struct drm_i915_gem_object, obj_exec_link);
|
||||||
|
|
||||||
return a->stolen->start - b->stolen->start;
|
if (a->stolen->start < b->stolen->start)
|
||||||
|
return -1;
|
||||||
|
if (a->stolen->start > b->stolen->start)
|
||||||
|
return 1;
|
||||||
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int i915_gem_stolen_list_info(struct seq_file *m, void *data)
|
static int i915_gem_stolen_list_info(struct seq_file *m, void *data)
|
||||||
|
|
Loading…
Reference in New Issue