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authorJan Kiszka <jan.kiszka@siemens.com>2017-02-08 17:09:09 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-02-10 15:13:26 +0100
commit172c33cb61da0df5ccbdf1a8e736c8837d165a00 (patch)
treec4970cf40db51135afffcdaf524477c0e85ef1b2 /drivers/tty
parent7e12357ed64afdc8e60d64b8f8f17d711acf950a (diff)
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>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_exar.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index f612da326e82..b89c4ffc0486 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -283,10 +283,16 @@ exar_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
priv->board = board;
+ pci_set_master(pcidev);
+
+ rc = pci_alloc_irq_vectors(pcidev, 1, 1, PCI_IRQ_ALL_TYPES);
+ if (rc < 0)
+ return rc;
+
memset(&uart, 0, sizeof(uart));
uart.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ
| UPF_EXAR_EFR;
- uart.port.irq = pcidev->irq;
+ uart.port.irq = pci_irq_vector(pcidev, 0);
uart.port.dev = &pcidev->dev;
for (i = 0; i < nr_ports && i < maxnr; i++) {