On Thu, Sep 12, 2019 at 06:32:02PM -0700, Megha Dey wrote: > +enum msi_desc_tags { > + IRQ_MSI_TAG_MSI, > + IRQ_MSI_TAG_MSIX, > + IRQ_MSI_TAG_IMS, > + IRQ_MSI_TAG_PLAT, > + IRQ_MSI_TAG_FSL, > + IRQ_MSI_TAG_SCI, > +}; What does any of these mean? Can you please provide comments at the very least saying what FSL, SCI, IMS and everything else is? thanks, greg k-h