Re: [PATCH 7/7] serial: exar: Enable MSI support
From: Andy Shevchenko <hidden>
Date: 2017-02-07 23:26:05
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On Tue, Feb 7, 2017 at 6:10 PM, Jan Kiszka [off-list ref] wrote:
Use pci_alloc_irq_vectors to enable MSI when available. At least the XR17V352 supports this.
FWIW: Reviewed-by: Andy Shevchenko <redacted>
quoted hunk ↗ jump to hunk
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> --- 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 13cc1da..236de60 100644 --- a/drivers/tty/serial/8250/8250_exar.c +++ b/drivers/tty/serial/8250/8250_exar.c@@ -284,10 +284,16 @@ 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++) { --2.1.4
-- With Best Regards, Andy Shevchenko