xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/iommu/amd_iommu_init.c
View File

@@ -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();