vfio: Mark expected switch fall-throughs

GustavoARSilva · awilliam · commit 544c05a60aef · 2018-08-06T12:22:54.000-06:00
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Signed-off-by: Gustavo A. R. Silva &lt;gustavo@embeddedor.com&gt;
Signed-off-by: Alex Williamson &lt;alex.williamson@redhat.com&gt;
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
@@ -789,7 +789,7 @@ static long vfio_pci_ioctl(void *device_data,
 		case VFIO_PCI_ERR_IRQ_INDEX:
 			if (pci_is_pcie(vdev->pdev))
 				break;
-		/* pass thru to return error */
+		/* fall through */
 		default:
 			return -EINVAL;
 		}
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
@@ -1601,6 +1601,7 @@ static void *vfio_iommu_type1_open(unsigned long arg)
 		break;
 	case VFIO_TYPE1_NESTING_IOMMU:
 		iommu->nesting = true;
+		/* fall through */
 	case VFIO_TYPE1v2_IOMMU:
 		iommu->v2 = true;
 		break;

Original file line number	Diff line number	Diff line change
`@@ -789,7 +789,7 @@ static long vfio_pci_ioctl(void *device_data,`
`789`	`789`	`case VFIO_PCI_ERR_IRQ_INDEX:`
`790`	`790`	`if (pci_is_pcie(vdev->pdev))`
`791`	`791`	`break;`
`792`		`- /* pass thru to return error */`
	`792`	`+ /* fall through */`
`793`	`793`	`default:`
`794`	`794`	`return -EINVAL;`
`795`	`795`	`}`