> I didn't use -EBUSY because I'm afraid some code may handle that in > a special manner and do or schedule a retry or some such, although > I guess that would be more expected of -EAGAIN. > > Anyways with that said I'm fine with changing this to -EBUSY, that > was my initial thought on this to. Since we agreed to have this custom patch for designware: The core will report -ESHUTDOWN when accessing a suspended adapter. Unless there is objection raised here, I will create a patch documenting it.
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