Linux Virtualization - Jan 2018 - [PATCH, v2] virtio: make VIRTIO a menuconfig to ease disabling it

Michael Ellerman <mpe at ellerman.id.au> writes:
> Vincent Legoll <vincent.legoll at gmail.com> writes:
>
>> Hello,
>>
>> thanks for the help, and sorry for the poor patch,
>>
>> On Thu, Dec 21, 2017 at 11:53 AM, Michael Ellerman <mpe at
ellerman.id.au> wrote:
>>> This breaks all existing .configs *and* defconfigs that use VIRTIO.
>>>
>>> Please don't do that.
>>>
>>> If you make it default y then everything will continue to work.
>>
>> Do you want me to respin it with the added default ?
>
> Yes please, either that or revert it.
This still seems to be broken.

cheers

No need to get into the submenu to disable all VIRTIO-related
config entries.

This makes it easier to disable all VIRTIO config options
without entering the submenu. It will also enable one
to see that en/dis-abled state from the outside menu.

This is only intended to change menuconfig UI, not change
the config dependencies.

v2: Added "default y" to avoid breaking existing configs

Signed-off-by: Vincent Legoll <vincent.legoll at gmail.com>

No need to get into the submenu to disable all VIRTIO-related
config entries.

This makes it easier to disable all VIRTIO config options
without entering the submenu. It will also enable one
to see that en/dis-abled state from the outside menu.

This is only intended to change menuconfig UI, not change
the config dependencies.

v2: add "default y" to avoid breaking existing configs

Signed-off-by: Vincent Legoll <vincent.legoll at gmail.com>
---
 drivers/virtio/Kconfig | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig
index cff773f15b7e..290a1875e1d3 100644
--- a/drivers/virtio/Kconfig
+++ b/drivers/virtio/Kconfig
@@ -5,7 +5,11 @@ config VIRTIO
 	  bus, such as CONFIG_VIRTIO_PCI, CONFIG_VIRTIO_MMIO, CONFIG_RPMSG
 	  or CONFIG_S390_GUEST.
 
-menu "Virtio drivers"
+menuconfig VIRTIO_MENU
+	  bool "Virtio drivers"
+	  default y
+
+if VIRTIO_MENU
 
 config VIRTIO_PCI
 	tristate "PCI driver for virtio devices"
@@ -79,4 +83,4 @@ config VIRTIO_MMIO_CMDLINE_DEVICES
 
 	 If unsure, say 'N'.
 
-endmenu
+endif # VIRTIO_MENU
-- 
2.11.0