[PATCH v2 7/7] serial: exar: Enable MSI support
From: Jan Kiszka <jan.kiszka@siemens.com>
Date: 2017-02-08 17:04:46
Also in:
lkml
Subsystem:
8250/16?50 (and clone uarts) serial driver, the rest, tty layer and serial drivers · Maintainers:
Greg Kroah-Hartman, Linus Torvalds, Jiri Slaby
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 <redacted> --- drivers/tty/serial/8250/8250_exar.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index f612da3..b89c4ff 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++) {
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2.1.4