When neither CONFIG_PCI nor CONFIG_IBMVIO is set/enabled, iommu.c has a
build error. The fault injection code is not useful in that kernel config,
so make the FAIL_IOMMU option depend on PCI || IBMVIO.
Prevents this build error (warning escalated to error):
../arch/powerpc/kernel/iommu.c:178:30: error: 'fail_iommu_bus_notifier' defined
but not used [-Werror=unused-variable]
178 | static struct notifier_block fail_iommu_bus_notifier = {
Fixes: d6b9a81b2a45 ("powerpc: IOMMU fault injection")
Signed-off-by: Randy Dunlap <[email protected]>
Reported-by: kernel test robot <[email protected]>
Suggested-by: Michael Ellerman <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: [email protected]
Cc: Anton Blanchard <[email protected]>
---
I was supposed to update this about one month ago, but then I lost
some email and also took a break for a few weeks, then I remembered,
so here it is.
arch/powerpc/Kconfig.debug | 1 +
1 file changed, 1 insertion(+)
--- lnx-512-rc1.orig/arch/powerpc/Kconfig.debug
+++ lnx-512-rc1/arch/powerpc/Kconfig.debug
@@ -353,6 +353,7 @@ config PPC_EARLY_DEBUG_CPM_ADDR
config FAIL_IOMMU
bool "Fault-injection capability for IOMMU"
depends on FAULT_INJECTION
+ depends on PCI || IBMVIO
help
Provide fault-injection capability for IOMMU. Each device can
be selectively enabled via the fail_iommu property.
