[PATCH] [v2] virtio: always enter drivers/virtio/

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

When neither VIRTIO_PCI_LIB nor VIRTIO are enabled, but the alibaba
vdpa driver is, the kernel runs into a link error because the legacy
virtio module never gets built:

x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_set_features':
eni_vdpa.c:(.text+0x23f): undefined reference to `vp_legacy_set_features'
x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_set_vq_state':
eni_vdpa.c:(.text+0x2fe): undefined reference to `vp_legacy_get_queue_enable'
x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_set_vq_address':
eni_vdpa.c:(.text+0x376): undefined reference to `vp_legacy_set_queue_address'
x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_set_vq_ready':
eni_vdpa.c:(.text+0x3b4): undefined reference to `vp_legacy_set_queue_address'
x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_free_irq':
eni_vdpa.c:(.text+0x460): undefined reference to `vp_legacy_queue_vector'
x86_64-linux-ld: eni_vdpa.c:(.text+0x4b7): undefined reference to `vp_legacy_config_vector'
x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_reset':

When VIRTIO_PCI_LIB was added, it was correctly added to drivers/Makefile
as well, but for the legacy module, this is missing.  Solve this by always
entering drivers/virtio during the build and letting its Makefile take
care of the individual options, rather than having a separate line for
each sub-option.

Fixes: 64b9f64f80a6 ("vdpa: introduce virtio pci driver")
Fixes: e85087beedca ("eni_vdpa: add vDPA driver for Alibaba ENI")
Fixes: d89c8169bd70 ("virtio-pci: introduce legacy device module")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/Makefile b/drivers/Makefile
index be5d40ae1488..a110338c860c 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -41,8 +41,7 @@ obj-$(CONFIG_DMADEVICES)	+= dma/
 # SOC specific infrastructure drivers.
 obj-y				+= soc/
 
-obj-$(CONFIG_VIRTIO)		+= virtio/
-obj-$(CONFIG_VIRTIO_PCI_LIB)	+= virtio/
+obj-y				+= virtio/
 obj-$(CONFIG_VDPA)		+= vdpa/
 obj-$(CONFIG_XEN)		+= xen/
 
-- 
2.29.2