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

[Chunming Zhou]

在 2019/7/18 21:10, Chris Wilson 写道:
> 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.

OK, I got your mean.

Any other possile value suggestted?

-David

> -Chris