iommu/amd: Make sure dma_ops are set for hotplug devices
There is a bug introduced with commit 27c2127
that causes
devices which are hot unplugged and then hot-replugged to
not have per-device dma_ops set. This causes these devices
to not function correctly. Fixed with this patch.
Cc: stable@vger.kernel.org
Reported-by: Andreas Degert <andreas.degert@googlemail.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
This commit is contained in:
parent
4fdc782416
commit
c2a2876e86
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@ -2466,18 +2466,16 @@ static int device_change_notifier(struct notifier_block *nb,
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/* allocate a protection domain if a device is added */
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dma_domain = find_protection_domain(devid);
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if (dma_domain)
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goto out;
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dma_domain = dma_ops_domain_alloc();
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if (!dma_domain)
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goto out;
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dma_domain->target_dev = devid;
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if (!dma_domain) {
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dma_domain = dma_ops_domain_alloc();
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if (!dma_domain)
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goto out;
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dma_domain->target_dev = devid;
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spin_lock_irqsave(&iommu_pd_list_lock, flags);
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list_add_tail(&dma_domain->list, &iommu_pd_list);
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spin_unlock_irqrestore(&iommu_pd_list_lock, flags);
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dev_data = get_dev_data(dev);
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spin_lock_irqsave(&iommu_pd_list_lock, flags);
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list_add_tail(&dma_domain->list, &iommu_pd_list);
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spin_unlock_irqrestore(&iommu_pd_list_lock, flags);
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}
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dev->archdata.dma_ops = &amd_iommu_dma_ops;
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