igb_uio: fix MSI-X IRQ assignment with new IRQ function

The patch which introduced the usage of pci_alloc_irq_vectors
came after the patch which switched to non-threaded ISR (f0d1896fa1),
but did not use non-threaded ISR, if pci_alloc_irq_vectors
is used.

Fixes: 99bb58f3adc7 ("igb_uio: switch to new irq function for MSI-X")
Cc: stable@dpdk.org
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
index 93bb71d..6885e72 100644 (file)
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -331,6 +331,7 @@ igbuio_pci_enable_interrupts(struct rte_uio_pci_dev *udev)
 #else
                if (pci_alloc_irq_vectors(udev->pdev, 1, 1, PCI_IRQ_MSIX) == 1) {
                        dev_dbg(&udev->pdev->dev, "using MSI-X");
+                       udev->info.irq_flags = IRQF_NO_THREAD;
                        udev->info.irq = pci_irq_vector(udev->pdev, 0);
                        udev->mode = RTE_INTR_MODE_MSIX;
                        break;