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-rw-r--r--intel/intel_bufmgr_gem.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c
index 78875fd3..33d8fbc4 100644
--- a/intel/intel_bufmgr_gem.c
+++ b/intel/intel_bufmgr_gem.c
@@ -1655,12 +1655,14 @@ drm_intel_gem_bo_wait_rendering(drm_intel_bo *bo)
*
* @bo: buffer object to wait for
* @timeout_ns: amount of time to wait in nanoseconds.
- * If value is less than 0, an infinite wait will occur.
+ * If value is less than or equal to 0, return immediately.
*
- * Returns 0 if the wait was successful ie. the last batch referencing the
- * object has completed within the allotted time. Otherwise some negative return
- * value describes the error. Of particular interest is -ETIME when the wait has
- * failed to yield the desired result.
+ * Returns 0 if the wait was successful ie. the last batch referencing
+ * the object has completed within the allotted time. Otherwise some
+ * negative return value describes the error. Of particular interest
+ * is -ETIME when the wait has failed to yield the desired result.
+ * Use a timeout of INT64_MAX to wait indefinitely (well, at least 292
+ * years).
*
* Similar to drm_intel_gem_bo_wait_rendering except a timeout parameter allows
* the operation to give up after a certain amount of time. Another subtle