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Date: Fri, 8 Aug 2014 13:36:04 +0800
From: Ethan Zhao <ethan.zhao@...cle.com>
To: bhelgaas@...gle.com, linux-pci@...r.kernel.org,
linux-kernel@...r.kernel.org, gleb@...nel.org, pbonzini@...hat.com,
kvm@...r.kernel.org, konrad.wilk@...cle.com,
boris.ostrovsky@...cle.com, david.vrabel@...rix.com,
xen-devel@...ts.xenproject.org
Cc: alex.williamson@...hat.com, alexander.h.duyck@...el.com,
ethan.kernel@...il.com
Subject: [PATCH 1/4] PCI: introduce helper functions for device flag operation
This patch introduced three helper functions to hide direct
device flag operation.
void pci_set_dev_assigned(struct pci_dev *pdev);
void pci_clear_dev_assigned(struct pci_dev *pdev);
bool pci_is_dev_assigned(struct pci_dev *pdev);
Signed-off-by: Ethan Zhao <ethan.zhao@...cle.com>
---
v2: simplify unnecessory ternary operation in function pci_is_dev_assigned();
v3: amend helper functions naming.
---
include/linux/pci.h | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 466bcd1..b610ab3 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1829,4 +1829,17 @@ int pci_for_each_dma_alias(struct pci_dev *pdev,
*/
struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
+/* helper functions for operation of device flag */
+static inline void pci_set_dev_assigned(struct pci_dev *pdev)
+{
+ pdev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED;
+}
+static inline void pci_clear_dev_assigned(struct pci_dev *pdev)
+{
+ pdev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
+}
+static inline bool pci_is_dev_assigned(struct pci_dev *pdev)
+{
+ return pdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED;
+}
#endif /* LINUX_PCI_H */
--
1.7.1
--
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