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iommu/amd: Free IOMMU resources when disabled on command line

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After we made sure that all IOMMUs have been disabled we
need to make sure that all resources we allocated are
released again.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2017-06-16 16:09:59 +02:00
parent f601927136
commit 7ad820e433
1 changed files with 7 additions and 0 deletions
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7
drivers/iommu/amd_iommu_init.c
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@ -2430,6 +2430,13 @@ static int __init state_next(void)
case IOMMU_IVRS_DETECTED:
ret = early_amd_iommu_init();
init_state = ret ? IOMMU_INIT_ERROR : IOMMU_ACPI_FINISHED;
if (init_state == IOMMU_ACPI_FINISHED && amd_iommu_disabled) {
pr_info("AMD-Vi: AMD IOMMU disabled on kernel command-line\n");
free_dma_resources();
free_iommu_resources();
init_state = IOMMU_CMDLINE_DISABLED;
ret = -EINVAL;
}
break;
case IOMMU_ACPI_FINISHED:
early_enable_iommus();