VFIO_CDX driver uses msi_domain_alloc_irqs() which is provided by
non-user-visible GENERIC_MSI_IRQ, thus it should select that option
directly.
VFIO_CDX depends on CDX_BUS, which also will select GENERIC_MSI_IRQ
(separate fix), nevertheless driver should poll what is being used there
instead of relying on bus Kconfig.
Without the fix on CDX_BUS compile test fails:
drivers/vfio/cdx/intr.c: In function ‘vfio_cdx_msi_enable’:
drivers/vfio/cdx/intr.c:41:15: error: implicit declaration of function ‘msi_domain_alloc_irqs’;
did you mean ‘irq_domain_alloc_irqs’? [-Wimplicit-function-declaration]
Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Closes: https://lore.kernel.org/r/4a6fd102-f8e0-42f3-b789-6e3340897032@xxxxxxxxxxxxx/
Fixes: 848e447e000c ("vfio/cdx: add interrupt support")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
drivers/vfio/cdx/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/vfio/cdx/Kconfig b/drivers/vfio/cdx/Kconfig
index e6de0a0caa32..90cf3dee5dba 100644
--- a/drivers/vfio/cdx/Kconfig
+++ b/drivers/vfio/cdx/Kconfig
@@ -9,6 +9,7 @@ config VFIO_CDX
tristate "VFIO support for CDX bus devices"
depends on CDX_BUS
select EVENTFD
+ select GENERIC_MSI_IRQ
help
Driver to enable VFIO support for the devices on CDX bus.
This is required to make use of CDX devices present in
--
2.48.1
