From: Joerg Roedel Date: Fri, 16 Jun 2017 16:09:56 +0200 Subject: iommu/amd: Add new init-state IOMMU_CMDLINE_DISABLED Git-commit: 1b1e942e344d3d41de187c1275024e915cb15844 Patch-mainline: v4.13-rc1 References: bsc#1045715 bsc#1043261 This will be used when during initialization we detect that the iommu should be disabled. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu_init.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -237,6 +237,7 @@ enum iommu_init_state { IOMMU_INITIALIZED, IOMMU_NOT_FOUND, IOMMU_INIT_ERROR, + IOMMU_CMDLINE_DISABLED, }; /* Early ioapic and hpet maps from kernel command line */ @@ -2452,6 +2453,7 @@ static int __init state_next(void) break; case IOMMU_NOT_FOUND: case IOMMU_INIT_ERROR: + case IOMMU_CMDLINE_DISABLED: /* Error states => do nothing */ ret = -EINVAL; break; @@ -2469,8 +2471,9 @@ static int __init iommu_go_to_state(enum while (init_state != state) { ret = state_next(); - if (init_state == IOMMU_NOT_FOUND || - init_state == IOMMU_INIT_ERROR) + if (init_state == IOMMU_NOT_FOUND || + init_state == IOMMU_INIT_ERROR || + init_state == IOMMU_CMDLINE_DISABLED) break; }