diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 820bc984082e..4a9faea626db 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1304,6 +1304,16 @@ int __i915_wait_seqno(struct intel_engine_cs *ring, u32 seqno, s64 tres = *timeout - (now - before); *timeout = tres < 0 ? 0 : tres; + + /* + * Apparently ktime isn't accurate enough and occasionally has a + * bit of mismatch in the jiffies<->nsecs<->ktime loop. So patch + * things up to make the test happy. We allow up to 1 jiffy. + * + * This is a regrssion from the timespec->ktime conversion. + */ + if (ret == -ETIME && *timeout < jiffies_to_usecs(1)*1000) + *timeout = 0; } return ret; |