From: Randy Dunlap rdunlap@infradead.org
[ Upstream commit b27dadecdf9102838331b9a0b41ffc1cfe288154 ]
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") Reported-by: kernel test robot lkp@intel.com Suggested-by: Michael Ellerman mpe@ellerman.id.au Signed-off-by: Randy Dunlap rdunlap@infradead.org Acked-by: Randy Dunlap rdunlap@infradead.org # build-tested Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20210404192623.10697-1-rdunlap@infradead.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/Kconfig.debug | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index ae084357994e..6342f9da4545 100644 --- a/arch/powerpc/Kconfig.debug +++ b/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.