Merge branch 'pci/msi' into next

* pci/msi:
  vfio: Use pci_enable_msi_range() and pci_enable_msix_range()
  ahci: Use pci_enable_msi_range() instead of pci_enable_msi_block()
  ahci: Fix broken fallback to single MSI mode
  PCI/MSI: Add pci_enable_msi_exact() and pci_enable_msix_exact()
  PCI/MSI: Fix cut-and-paste errors in documentation
  PCI/MSI: Add pci_enable_msi() documentation back
  PCI/MSI: Fix pci_msix_vec_count() htmldocs failure
  PCI/MSI: Fix leak of msi_attrs
  PCI/MSI: Check kmalloc() return value, fix leak of name

1 files changed, 20 insertions, 0 deletions

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 60ab8d782f8c..1e26fc602adc 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1171,8 +1171,23 @@ void msi_remove_pci_irq_vectors(struct pci_dev *dev);
 void pci_restore_msi_state(struct pci_dev *dev);
 int pci_msi_enabled(void);
 int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec);
+static inline int pci_enable_msi_exact(struct pci_dev *dev, int nvec)
+{
+        int rc = pci_enable_msi_range(dev, nvec, nvec);
+        if (rc < 0)
+                return rc;
+        return 0;
+}
 int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
                           int minvec, int maxvec);
+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_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
 static inline int pci_enable_msi_block(struct pci_dev *dev, int nvec)
@@ -1191,9 +1206,14 @@ static inline int pci_msi_enabled(void) { return 0; }
 static inline int pci_enable_msi_range(struct pci_dev *dev, int minvec,
                                        int maxvec)
 { return -ENOSYS; }
+static inline int pci_enable_msi_exact(struct pci_dev *dev, int nvec)
+{ return -ENOSYS; }
 static inline int pci_enable_msix_range(struct pci_dev *dev,
                       struct msix_entry *entries, int minvec, int maxvec)
 { return -ENOSYS; }
+static inline int pci_enable_msix_exact(struct pci_dev *dev,
+                      struct msix_entry *entries, int nvec)
+{ return -ENOSYS; }
 #endif
 
 #ifdef CONFIG_PCIEPORTBUS