On 02/02/2024 14:35, Jason Gunthorpe wrote:
On Fri, Feb 02, 2024 at 10:40:36AM +0000, Jon Hunter wrote:
But, what is the actual log output you see, is it -EEXIST?
I see ...
ERR KERN host1x drm: iommu configuration for device failed with -ENOENT
So that shouldn't happen in you case as far as I can tell, the device
is properly added, link->kobj should be fine and ENOENT shouldn't
happen.
If it is coming and going is it a race of some kind?
It is consistent without the above. However, I did not think that the
above change would change the returning on -ENOENT? I will add more
debug.
I do not think it can either
Still wonder if there is some odd race..
Let me know when you figure out what is happening - I think there is
some bug here it is not just a harmless warning.
Yes looks like a race of some sort. Adding a bit of debug also makes the
issue go away so difficult to see what is happening.
Jon
--
nvpublic
