I've assumed that there is a kernel voodoo magic happens, but it seems that the reviewer is also confused by this. https://lore.kernel.org/lkml/20201104014915.

I've assumed that there is a kernel voodoo magic happens, but it seems that the reviewer is also confused by this. https://lore.kernel.org/lkml/20201104014915.45tbmnrqvccbrd2k@srcf.ucam.org/#t https://lore.kernel.org/lkml/20201104014915.45tbmnrqvccbrd2k... Might be copy/paste from another driver or they will implement it later.