diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/msi/api.c | 23 | ||||
| -rw-r--r-- | drivers/pci/msi/msi.c | 24 |
2 files changed, 23 insertions, 24 deletions
diff --git a/drivers/pci/msi/api.c b/drivers/pci/msi/api.c index 8546749afa6e..0f1ec87e3f9f 100644 --- a/drivers/pci/msi/api.c +++ b/drivers/pci/msi/api.c @@ -182,3 +182,26 @@ int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs, return nvecs; } EXPORT_SYMBOL(pci_alloc_irq_vectors_affinity); + +/** + * pci_irq_vector() - Get Linux IRQ number of a device interrupt vector + * @dev: the PCI device to operate on + * @nr: device-relative interrupt vector index (0-based); has different + * meanings, depending on interrupt mode + * MSI-X the index in the MSI-X vector table + * MSI the index of the enabled MSI vectors + * INTx must be 0 + * + * Return: the Linux IRQ number, or -EINVAL if @nr is out of range + */ +int pci_irq_vector(struct pci_dev *dev, unsigned int nr) +{ + unsigned int irq; + + if (!dev->msi_enabled && !dev->msix_enabled) + return !nr ? dev->irq : -EINVAL; + + irq = msi_get_virq(&dev->dev, nr); + return irq ? irq : -EINVAL; +} +EXPORT_SYMBOL(pci_irq_vector); diff --git a/drivers/pci/msi/msi.c b/drivers/pci/msi/msi.c index a028774f438d..38ad2fe4b85c 100644 --- a/drivers/pci/msi/msi.c +++ b/drivers/pci/msi/msi.c @@ -900,30 +900,6 @@ void pci_free_irq_vectors(struct pci_dev *dev) EXPORT_SYMBOL(pci_free_irq_vectors); /** - * pci_irq_vector - return Linux IRQ number of a device vector - * @dev: PCI device to operate on - * @nr: Interrupt vector index (0-based) - * - * @nr has the following meanings depending on the interrupt mode: - * MSI-X: The index in the MSI-X vector table - * MSI: The index of the enabled MSI vectors - * INTx: Must be 0 - * - * Return: The Linux interrupt number or -EINVAl if @nr is out of range. - */ -int pci_irq_vector(struct pci_dev *dev, unsigned int nr) -{ - unsigned int irq; - - if (!dev->msi_enabled && !dev->msix_enabled) - return !nr ? dev->irq : -EINVAL; - - irq = msi_get_virq(&dev->dev, nr); - return irq ? irq : -EINVAL; -} -EXPORT_SYMBOL(pci_irq_vector); - -/** * pci_irq_get_affinity - return the affinity of a particular MSI vector * @dev: PCI device to operate on * @nr: device-relative interrupt vector index (0-based). |