Or maybe this rephrase helps:
Regardless of how the IDE quirks have configured the PCI BARs, libata is
written to assume that /all/ struct pci_dev resources for a single PCI
device are reserved to the libata driver.
Thus, if you avoid calling pci_request_regions (as your patch does), you
must manually provide the same guarantees that pci_request_regions
provides to its callers.
Jeff
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