[PATCH 11/11] virtio: pci: Allow exclusion of legacy driver

Andrew Scull
2022-03-20T11:45:16Z

Add a new config to control whether the driver for legacy virtio PCI
devices is included in the build. VIRTIO_PCI_LEGACY is included by
default when VIRTIO_PCI is selected, but it can also be indepedently
toggled.

Signed-off-by: Andrew Scull <ascull@google.com>
---
drivers/virtio/Kconfig | 9 +++++++++
drivers/virtio/Makefile | 3 ++-
2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig
index 863c3fbe02..586263ec88 100644
--- a/drivers/virtio/Kconfig
+++ b/drivers/virtio/Kconfig
@@ -37,6 +37,15 @@ config VIRTIO_PCI
This driver provides support for virtio based paravirtual device
drivers over PCI.

+config VIRTIO_PCI_LEGACY
+ bool "PCI driver for legacy virtio devices"
+ depends on PCI
+ select VIRTIO
+ default VIRTIO_PCI
+ help
+ This driver provides support for legacy virtio based paravirtual
+ device drivers over PCI.
+
config VIRTIO_SANDBOX
bool "Sandbox driver for virtio devices"
depends on SANDBOX
diff --git a/drivers/virtio/Makefile b/drivers/virtio/Makefile
index dc8880937a..4c63a6c690 100644
--- a/drivers/virtio/Makefile
+++ b/drivers/virtio/Makefile
@@ -5,7 +5,8 @@

obj-y += virtio-uclass.o virtio_ring.o
obj-$(CONFIG_VIRTIO_MMIO) += virtio_mmio.o
-obj-$(CONFIG_VIRTIO_PCI) += virtio_pci_legacy.o virtio_pci_modern.o
+obj-$(CONFIG_VIRTIO_PCI) += virtio_pci_modern.o
+obj-$(CONFIG_VIRTIO_PCI_LEGACY) += virtio_pci_legacy.o
obj-$(CONFIG_VIRTIO_SANDBOX) += virtio_sandbox.o
obj-$(CONFIG_VIRTIO_NET) += virtio_net.o
obj-$(CONFIG_VIRTIO_BLK) += virtio_blk.o
--
2.35.1.894.gb6a874cedc-goog