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

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();