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serial: exar: Enable MSI support
Use pci_alloc_irq_vectors to enable MSI when available. At least the XR17V352 supports this. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -283,10 +283,16 @@ exar_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
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priv->board = board;
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pci_set_master(pcidev);
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rc = pci_alloc_irq_vectors(pcidev, 1, 1, PCI_IRQ_ALL_TYPES);
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if (rc < 0)
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return rc;
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memset(&uart, 0, sizeof(uart));
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uart.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ
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| UPF_EXAR_EFR;
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uart.port.irq = pcidev->irq;
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uart.port.irq = pci_irq_vector(pcidev, 0);
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uart.port.dev = &pcidev->dev;
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for (i = 0; i < nr_ports && i < maxnr; i++) {
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