diff options
| author | Ingo Molnar <mingo@kernel.org> | 2025-03-08 00:54:06 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-03-08 00:54:06 +0100 |
| commit | f23ecef20af6fbd489e0362d33cdf8d9429fa901 (patch) | |
| tree | 713f06d8335b7c3388bbfbc46cb6d2a568951252 /drivers/iommu/intel/iommu.c | |
| parent | c929d08df8bee855528b9d15b853c892c54e1eee (diff) | |
| parent | 85b2b9c16d053364e2004883140538e73b333cdb (diff) | |
Merge branch 'locking/urgent' into locking/core, to pick up locking fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index cc46098f875b..bf1f0c814348 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -3146,7 +3146,14 @@ int __init intel_iommu_init(void) iommu_device_sysfs_add(&iommu->iommu, NULL, intel_iommu_groups, "%s", iommu->name); + /* + * The iommu device probe is protected by the iommu_probe_device_lock. + * Release the dmar_global_lock before entering the device probe path + * to avoid unnecessary lock order splat. + */ + up_read(&dmar_global_lock); iommu_device_register(&iommu->iommu, &intel_iommu_ops, NULL); + down_read(&dmar_global_lock); iommu_pmu_register(iommu); } @@ -4378,9 +4385,6 @@ static int context_setup_pass_through_cb(struct pci_dev *pdev, u16 alias, void * { struct device *dev = data; - if (dev != &pdev->dev) - return 0; - return context_setup_pass_through(dev, PCI_BUS_NUM(alias), alias & 0xff); } |