From 61e015ac5b4d46c2054a78d9bc82c840274929a0 Mon Sep 17 00:00:00 2001 From: Varun Sethi Date: Tue, 23 Apr 2013 10:05:24 +0530 Subject: iommu: Move swap_pci_ref function to drivers/iommu/pci.h. The swap_pci_ref function is used by the IOMMU API code for swapping pci device pointers, while determining the iommu group for the device. Currently this function was being implemented for different IOMMU drivers. This patch moves the function to a new file, drivers/iommu/pci.h so that the implementation can be shared across various IOMMU drivers. Signed-off-by: Varun Sethi Signed-off-by: Joerg Roedel --- drivers/iommu/pci.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 drivers/iommu/pci.h (limited to 'drivers/iommu/pci.h') diff --git a/drivers/iommu/pci.h b/drivers/iommu/pci.h new file mode 100644 index 000000000000..352d80ae7443 --- /dev/null +++ b/drivers/iommu/pci.h @@ -0,0 +1,29 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Copyright (C) 2013 Red Hat, Inc. + * Copyright (C) 2013 Freescale Semiconductor, Inc. + * + */ +#ifndef __IOMMU_PCI_H +#define __IOMMU_PCI_H + +/* Helper function for swapping pci device reference */ +static inline void swap_pci_ref(struct pci_dev **from, struct pci_dev *to) +{ + pci_dev_put(*from); + *from = to; +} + +#endif /* __IOMMU_PCI_H */ -- cgit v1.2.3