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Diffstat (limited to 'drivers/iommu/intel/dmar.c')
| -rw-r--r-- | drivers/iommu/intel/dmar.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c index 9f424acf474e..e540092d664d 100644 --- a/drivers/iommu/intel/dmar.c +++ b/drivers/iommu/intel/dmar.c @@ -2043,6 +2043,7 @@ int enable_drhd_fault_handling(unsigned int cpu) /* * Enable fault control interrupt. */ + guard(rwsem_read)(&dmar_global_lock); for_each_iommu(iommu, drhd) { u32 fault_status; int ret; |