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

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On 18/07/2019 14:13, Chunming Zhou wrote:
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.

Signed-off-by: Chunming Zhou <david1.zhou@xxxxxxx>
---
  drivers/gpu/drm/drm_syncobj.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 361a01a08c18..929f7c64f9a2 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -252,7 +252,7 @@ int drm_syncobj_find_fence(struct drm_file *file_private,
  			return 0;
  		dma_fence_put(*fence);
  	} else {
-		ret = -EINVAL;
+		ret = -ENOTBLK;
  	}
if (!(flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT))
@@ -832,7 +832,7 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs,
  			if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) {
  				continue;
  			} else {
-				timeout = -EINVAL;
+				timeout = -ENOTBLK;
  				goto cleanup_entries;
  			}
  		}


This would break existing tests for binary syncobjs.

Is this really what we want?


-Lionel


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