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| author | Yanfei Xu <yanfei.xu@intel.com> | 2023-06-14 10:47:03 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-06-16 16:38:32 +0200 |
| commit | a0e9911ac14baf46d8a8bea322c5bd7b3845825c (patch) | |
| tree | 312aeb95c0b0780ece9befc9ad0fa01ecd3a8dfc /drivers/iommu | |
| parent | 82d9654f92fd858d3b36c6f189dcfa850f2dfa29 (diff) | |
| download | linux-stable-a0e9911ac14baf46d8a8bea322c5bd7b3845825c.tar.gz linux-stable-a0e9911ac14baf46d8a8bea322c5bd7b3845825c.tar.bz2 linux-stable-a0e9911ac14baf46d8a8bea322c5bd7b3845825c.zip | |
iommu/vt-d: Handle the failure case of dmar_reenable_qi()
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>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 323fa1a93765..e83fe243680b 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -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) { |