diff -ur dpdk-18.11.orig/kernel/linux/igb_uio/igb_uio.c dpdk-18.11/kernel/linux/igb_uio/igb_uio.c
--- dpdk-18.11.orig/kernel/linux/igb_uio/igb_uio.c	2018-11-27 00:36:00.000000000 +0100
+++ dpdk-18.11/kernel/linux/igb_uio/igb_uio.c	2019-08-14 09:49:58.720141734 +0200
@@ -235,8 +235,8 @@
 			break;
 		}
 #endif
-
 	/* fall back to MSI */
+	/* fallthrough */
 	case RTE_INTR_MODE_MSI:
 #ifndef HAVE_ALLOC_IRQ_VECTORS
 		if (pci_enable_msi(udev->pdev) == 0) {
@@ -256,6 +256,7 @@
 		}
 #endif
 	/* fall back to INTX */
+	/* fallthrough */
 	case RTE_INTR_MODE_LEGACY:
 		if (pci_intx_mask_supported(udev->pdev)) {
 			dev_dbg(&udev->pdev->dev, "using INTX");
@@ -266,6 +267,7 @@
 		}
 		dev_notice(&udev->pdev->dev, "PCI INTX mask not supported\n");
 	/* fall back to no IRQ */
+	/* fallthrough */
 	case RTE_INTR_MODE_NONE:
 		udev->mode = RTE_INTR_MODE_NONE;
 		udev->info.irq = UIO_IRQ_NONE;
Only in dpdk-18.11/kernel/linux/igb_uio: igb_uio.c~