This was added in upstream commit f7fc32cb20 "PCI/MSI: Add
pci_enable_msi_exact() and pci_enable_msix_exact()" and is used by the
mwifiex driver.
Signed-off-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
backport/backport-include/linux/pci.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/backport/backport-include/linux/pci.h b/backport/backport-include/linux/pci.h
index f168bde..081b4c7 100644
--- a/backport/backport-include/linux/pci.h
+++ b/backport/backport-include/linux/pci.h
@@ -164,4 +164,24 @@ static inline int pci_enable_msix_range(struct pci_dev *dev,
bool pci_device_is_present(struct pci_dev *pdev);
#endif
+#ifdef CONFIG_PCI
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0)
+#define pci_enable_msix_exact LINUX_BACKPORT(pci_enable_msix_exact)
+#ifdef CONFIG_PCI_MSI
+static inline int pci_enable_msix_exact(struct pci_dev *dev,
+ struct msix_entry *entries, int nvec)
+{
+ int rc = pci_enable_msix_range(dev, entries, nvec, nvec);
+ if (rc < 0)
+ return rc;
+ return 0;
+}
+#else
+static inline int pci_enable_msix_exact(struct pci_dev *dev,
+ struct msix_entry *entries, int nvec)
+{ return -ENOSYS; }
+#endif /* CONFIG_PCI_MSI */
+#endif
+#endif /* CONFIG_PCI */
+
#endif /* _BACKPORT_LINUX_PCI_H */
--
2.8.1
--
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