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iommu/vt-d: Handle the failure case of dmar_reenable_qi()

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dmar_reenable_qi() may not succeed. Check and return when it fails.

Signed-off-by: Yanfei Xu <yanfei.xu@intel.com>
Link: https://lore.kernel.org/r/20230605112659.308981-2-yanfei.xu@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yanfei Xu
2023-06-14 10:47:03 +08:00
committed by Joerg Roedel
parent 82d9654f92
commit a0e9911ac1
1 changed files with 8 additions and 3 deletions
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11
drivers/iommu/intel/iommu.c
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@@ -2967,10 +2967,15 @@ static int init_iommu_hw(void)
{
struct dmar_drhd_unit *drhd;
struct intel_iommu *iommu = NULL;
int ret;
for_each_active_iommu(iommu, drhd)
if (iommu->qi)
dmar_reenable_qi(iommu);
for_each_active_iommu(iommu, drhd) {
if (iommu->qi) {
ret = dmar_reenable_qi(iommu);
if (ret)
return ret;
}
}
for_each_iommu(iommu, drhd) {
if (drhd->ignored) {