Somehow vmbus driver is hinged on CONFIG_HYPERV. It appears this is initial
code that did not get addressed when the scope of CONFIG_HYPERV went beyond
vmbus. This commit creates a fine grained HYPERV_VMBUS option and updates
drivers that depend on VMBUS.

Signed-off-by: Mukesh Rathor <mrat...@linux.microsoft.com>
---
 drivers/gpu/drm/Kconfig        |  2 +-
 drivers/hid/Kconfig            |  2 +-
 drivers/hv/Kconfig             | 12 +++++++++---
 drivers/hv/Makefile            |  2 +-
 drivers/input/serio/Kconfig    |  4 ++--
 drivers/net/hyperv/Kconfig     |  2 +-
 drivers/pci/Kconfig            |  2 +-
 drivers/scsi/Kconfig           |  2 +-
 drivers/uio/Kconfig            |  2 +-
 drivers/video/fbdev/Kconfig    |  2 +-
 include/asm-generic/mshyperv.h |  8 +++++---
 net/vmw_vsock/Kconfig          |  2 +-
 12 files changed, 25 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index f7ea8e895c0c..58f34da061c6 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -398,7 +398,7 @@ source "drivers/gpu/drm/imagination/Kconfig"
 
 config DRM_HYPERV
        tristate "DRM Support for Hyper-V synthetic video device"
-       depends on DRM && PCI && HYPERV
+       depends on DRM && PCI && HYPERV_VMBUS
        select DRM_CLIENT_SELECTION
        select DRM_KMS_HELPER
        select DRM_GEM_SHMEM_HELPER
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index a57901203aeb..fe3dc8c0db99 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -1162,7 +1162,7 @@ config GREENASIA_FF
 
 config HID_HYPERV_MOUSE
        tristate "Microsoft Hyper-V mouse driver"
-       depends on HYPERV
+       depends on HYPERV_VMBUS
        help
        Select this option to enable the Hyper-V mouse driver.
 
diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
index 2e8df09db599..08c4ed005137 100644
--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -44,18 +44,24 @@ config HYPERV_TIMER
 
 config HYPERV_UTILS
        tristate "Microsoft Hyper-V Utilities driver"
-       depends on HYPERV && CONNECTOR && NLS
+       depends on HYPERV_VMBUS && CONNECTOR && NLS
        depends on PTP_1588_CLOCK_OPTIONAL
        help
          Select this option to enable the Hyper-V Utilities.
 
 config HYPERV_BALLOON
        tristate "Microsoft Hyper-V Balloon driver"
-       depends on HYPERV
+       depends on HYPERV_VMBUS
        select PAGE_REPORTING
        help
          Select this option to enable Hyper-V Balloon driver.
 
+config HYPERV_VMBUS
+       tristate "Microsoft Hyper-V Vmbus driver"
+       depends on HYPERV
+       help
+         Select this option to enable Hyper-V Vmbus driver.
+
 config MSHV_ROOT
        tristate "Microsoft Hyper-V root partition support"
        depends on HYPERV && (X86_64 || ARM64)
@@ -75,7 +81,7 @@ config MSHV_ROOT
 
 config MSHV_VTL
        tristate "Microsoft Hyper-V VTL driver"
-       depends on X86_64 && HYPERV_VTL_MODE
+       depends on X86_64 && HYPERV_VTL_MODE && HYPERV_VMBUS
        # Mapping VTL0 memory to a userspace process in VTL2 is supported in 
OpenHCL.
        # VTL2 for OpenHCL makes use of Huge Pages to improve performance on 
VMs,
        # specially with large memory requirements.
diff --git a/drivers/hv/Makefile b/drivers/hv/Makefile
index c53a0df746b7..050517756a82 100644
--- a/drivers/hv/Makefile
+++ b/drivers/hv/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_HYPERV)           += hv_vmbus.o
+obj-$(CONFIG_HYPERV_VMBUS)     += hv_vmbus.o
 obj-$(CONFIG_HYPERV_UTILS)     += hv_utils.o
 obj-$(CONFIG_HYPERV_BALLOON)   += hv_balloon.o
 obj-$(CONFIG_MSHV_ROOT)                += mshv_root.o
diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig
index 17edc1597446..c7ef347a4dff 100644
--- a/drivers/input/serio/Kconfig
+++ b/drivers/input/serio/Kconfig
@@ -276,8 +276,8 @@ config SERIO_OLPC_APSP
 
 config HYPERV_KEYBOARD
        tristate "Microsoft Synthetic Keyboard driver"
-       depends on HYPERV
-       default HYPERV
+       depends on HYPERV_VMBUS
+       default HYPERV_VMBUS
        help
          Select this option to enable the Hyper-V Keyboard driver.
 
diff --git a/drivers/net/hyperv/Kconfig b/drivers/net/hyperv/Kconfig
index c8cbd85adcf9..982964c1a9fb 100644
--- a/drivers/net/hyperv/Kconfig
+++ b/drivers/net/hyperv/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config HYPERV_NET
        tristate "Microsoft Hyper-V virtual network driver"
-       depends on HYPERV
+       depends on HYPERV_VMBUS
        select UCS2_STRING
        select NLS
        help
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 9a249c65aedc..7065a8e5f9b1 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -221,7 +221,7 @@ config PCI_LABEL
 
 config PCI_HYPERV
        tristate "Hyper-V PCI Frontend"
-       depends on ((X86 && X86_64) || ARM64) && HYPERV && PCI_MSI && SYSFS
+       depends on ((X86 && X86_64) || ARM64) && HYPERV_VMBUS && PCI_MSI && 
SYSFS
        select PCI_HYPERV_INTERFACE
        select IRQ_MSI_LIB
        help
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 5522310bab8d..19d0884479a2 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -589,7 +589,7 @@ config XEN_SCSI_FRONTEND
 
 config HYPERV_STORAGE
        tristate "Microsoft Hyper-V virtual storage driver"
-       depends on SCSI && HYPERV
+       depends on SCSI && HYPERV_VMBUS
        depends on m || SCSI_FC_ATTRS != m
        default HYPERV
        help
diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig
index b060dcd7c635..6f86a61231e6 100644
--- a/drivers/uio/Kconfig
+++ b/drivers/uio/Kconfig
@@ -140,7 +140,7 @@ config UIO_MF624
 
 config UIO_HV_GENERIC
        tristate "Generic driver for Hyper-V VMBus"
-       depends on HYPERV
+       depends on HYPERV_VMBUS
        help
          Generic driver that you can bind, dynamically, to any
          Hyper-V VMBus device. It is useful to provide direct access
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index c21484d15f0c..72c63eaeb983 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -1774,7 +1774,7 @@ config FB_BROADSHEET
 
 config FB_HYPERV
        tristate "Microsoft Hyper-V Synthetic Video support"
-       depends on FB && HYPERV
+       depends on FB && HYPERV_VMBUS
        select DMA_CMA if HAVE_DMA_CONTIGUOUS && CMA
        select FB_IOMEM_HELPERS_DEFERRED
        help
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index 1d2ad1304ad4..66c58c91b530 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -165,6 +165,7 @@ static inline u64 hv_generate_guest_id(u64 kernel_version)
 
 void __init hv_mark_resources(void);
 
+#if IS_ENABLED(CONFIG_HYPERV_VMBUS)
 /* Free the message slot and signal end-of-message if required */
 static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
 {
@@ -200,6 +201,10 @@ static inline void vmbus_signal_eom(struct hv_message 
*msg, u32 old_msg_type)
        }
 }
 
+extern int vmbus_interrupt;
+extern int vmbus_irq;
+#endif /* CONFIG_HYPERV_VMBUS */
+
 int hv_get_hypervisor_version(union hv_hypervisor_version_info *info);
 
 void hv_setup_vmbus_handler(void (*handler)(void));
@@ -213,9 +218,6 @@ void hv_setup_crash_handler(void (*handler)(struct pt_regs 
*regs));
 void hv_remove_crash_handler(void);
 void hv_setup_mshv_handler(void (*handler)(void));
 
-extern int vmbus_interrupt;
-extern int vmbus_irq;
-
 #if IS_ENABLED(CONFIG_HYPERV)
 /*
  * Hypervisor's notion of virtual processor ID is different from
diff --git a/net/vmw_vsock/Kconfig b/net/vmw_vsock/Kconfig
index 56356d2980c8..8e803c4828c4 100644
--- a/net/vmw_vsock/Kconfig
+++ b/net/vmw_vsock/Kconfig
@@ -72,7 +72,7 @@ config VIRTIO_VSOCKETS_COMMON
 
 config HYPERV_VSOCKETS
        tristate "Hyper-V transport for Virtual Sockets"
-       depends on VSOCKETS && HYPERV
+       depends on VSOCKETS && HYPERV_VMBUS
        help
          This module implements a Hyper-V transport for Virtual Sockets.
 
-- 
2.36.1.vfs.0.0


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