usb/xhci: refactor xhci_pci_setup()
xhci_pci_setup() is split into three pieces: - xhci_gen_setup() The major remaining of xhci_pci_setup() is now containing the generic part of the xhci setup. It allocates the xhci struct, setup hcs_params? and friends, performs xhci_halt(), xhci_init and so one. It also obtains the quirks via a callback - xhci_pci_quirks() It checks the origin of the xhci core and sets core specific quirks. - xhci_pci_setup() PCI specific setup functions. Besides calling xhci_gen_setup() with xhci_pci_quirks() as an argument it performs PCI specific setup like obtaining the address of sbrn via a PCI config space. Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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