android_kernel_xiaomi_sm8350/include/linux/pci-acpi.h
Kenji Kaneshige a222b8f83b PCI: use pci_is_root_bus() in acpi_find_root_bridge_handle()
Use pci_is_root_bus() in acpi_find_root_bridge_handle() to check if
the pci bus is root, for code consistency.

Reviewed-by: Alex Chiang <achiang@hp.com>
Reviewed-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-16 14:29:30 -07:00

37 lines
866 B
C

/*
* File pci-acpi.h
*
* Copyright (C) 2004 Intel
* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
*/
#ifndef _PCI_ACPI_H_
#define _PCI_ACPI_H_
#include <linux/acpi.h>
#ifdef CONFIG_ACPI
static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
{
struct pci_bus *pbus = pdev->bus;
/* Find a PCI root bus */
while (!pci_is_root_bus(pbus))
pbus = pbus->parent;
return acpi_get_pci_rootbridge_handle(pci_domain_nr(pbus),
pbus->number);
}
static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
{
if (!pci_is_root_bus(pbus))
return DEVICE_ACPI_HANDLE(&(pbus->self->dev));
return acpi_get_pci_rootbridge_handle(pci_domain_nr(pbus),
pbus->number);
}
#else
static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
{ return NULL; }
#endif
#endif /* _PCI_ACPI_H_ */