[PATCH v2 1/2] powerpc: add refcount to struct pci_controller

Mauricio Faria de Oliveira mauricfo at linux.vnet.ibm.com
Wed Aug 10 23:53:30 AEST 2016

On 08/09/2016 10:45 PM, Andrew Donnellan wrote:
> I'm currently working on a cxl defect found by an IBM test team where we
> run into this - will review this patch more thoroughly and test it shortly.

Gavin provided a review/suggestions via chat, pointing to rely on the
refcount that already exists in the PCI subsystem (not reinvent another)
and leverage the release of the PCI root bus -- which is much simpler!

He replied there should be no problems w/ the EEH reset path (PCI root
bus not released) nor w/ other structs w/ refs to the PHB (PCI DN, EEH

I'll go down that path for a PATCH v3.

Mauricio Faria de Oliveira
IBM Linux Technology Center

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