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iommu/amd: Keep track of amd_iommu_irq_remap state

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The amd_iommu_irq_remap variable is set to true in amd_iommu_prepare().
But if initialization fails it is not set to false. Fix that and
correctly keep track of whether irq remapping is enabled or not.

References: https://bugzilla.kernel.org/show_bug.cgi?id=212133
References: https://bugzilla.suse.com/show_bug.cgi?id=1183132
Fixes: b34f10c2dc ("iommu/amd: Stop irq_remapping_select() matching when remapping is disabled")
Cc: stable@vger.kernel.org # v5.11
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20210317091037.31374-4-joro@8bytes.org
Acked-by: Huang Rui <ray.huang@amd.com>
This commit is contained in:
Joerg Roedel 2021-03-17 10:10:37 +01:00
parent 9f81ca8d1f
commit 4b8ef157ca
1 changed files with 4 additions and 1 deletions
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5
drivers/iommu/amd/init.c
View file

@ -3002,8 +3002,11 @@ int __init amd_iommu_prepare(void)
amd_iommu_irq_remap = true;
ret = iommu_go_to_state(IOMMU_ACPI_FINISHED);
if (ret)
if (ret) {
amd_iommu_irq_remap = false;
return ret;
}
return amd_iommu_irq_remap ? 0 : -ENODEV;
}