[PATCH] drm/syncobj: return meaningful value to user space

[Chris Wilson]

Quoting Chunming Zhou (2019-07-18 14:04:09)
> 
> 在 2019/7/18 19:18, Chris Wilson 写道:
> > Quoting Chunming Zhou (2019-07-18 12:13:39)
> >> if WAIT_FOR_SUBMIT isn't set and in the meanwhile no underlying fence on syncobj,
> >> then return non-block error code to user sapce.
> > Block device required?
> 
> Yes, if WAIT_FOR_SUBMIT is set, then that will block device.

No, the error message is that it requires a "block device", not that it
will block the device, which is EWOULDBLOCK.
-Chris