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-rw-r--r--src/mesa/drivers/dri/i965/intel_syncobj.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/intel_syncobj.c b/src/mesa/drivers/dri/i965/intel_syncobj.c
index 9cde15298fe..e500fa04c51 100644
--- a/src/mesa/drivers/dri/i965/intel_syncobj.c
+++ b/src/mesa/drivers/dri/i965/intel_syncobj.c
@@ -84,6 +84,14 @@ static void intel_client_wait_sync(struct gl_context *ctx, struct gl_sync_object
{
struct intel_sync_object *sync = (struct intel_sync_object *)s;
+ /* DRM_IOCTL_I915_GEM_WAIT uses a signed 64 bit timeout and returns
+ * immediately for timeouts <= 0. The best we can do is to clamp the
+ * timeout to INT64_MAX. This limits the maximum timeout from 584 years to
+ * 292 years - likely not a big deal.
+ */
+ if (timeout > INT64_MAX)
+ timeout = INT64_MAX;
+
if (sync->bo && drm_intel_gem_bo_wait(sync->bo, timeout) == 0) {
s->StatusFlag = 1;
drm_intel_bo_unreference(sync->bo);