linux/drivers/iommu/pci.h
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   1/*
   2 * This program is free software; you can redistribute it and/or modify
   3 * it under the terms of the GNU General Public License, version 2, as
   4 * published by the Free Software Foundation.
   5 *
   6 * This program is distributed in the hope that it will be useful,
   7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
   8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9 * GNU General Public License for more details.
  10 *
  11 * You should have received a copy of the GNU General Public License
  12 * along with this program; if not, write to the Free Software
  13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  14 *
  15 * Copyright (C) 2013 Red Hat, Inc.
  16 * Copyright (C) 2013 Freescale Semiconductor, Inc.
  17 *
  18 */
  19#ifndef __IOMMU_PCI_H
  20#define __IOMMU_PCI_H
  21
  22/* Helper function for swapping pci device reference */
  23static inline void swap_pci_ref(struct pci_dev **from, struct pci_dev *to)
  24{
  25        pci_dev_put(*from);
  26        *from = to;
  27}
  28
  29#endif  /* __IOMMU_PCI_H */
  30
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