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[Xen-devel] [PATCH] vt-d: avoid obtaining iommu->register_lock too early
| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH] vt-d: avoid obtaining iommu->register_lock too early in dma_msi_set_affinity() |
| From: | "Cui, Dexuan" <dexuan.cui@xxxxxxxxx> |
| Date: | Mon, 7 Sep 2009 16:30:52 +0800 |
| Accept-language: | zh-CN, en-US |
| Acceptlanguage: | zh-CN, en-US |
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| Delivery-date: | Mon, 07 Sep 2009 01:30:39 -0700 |
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| Thread-index: | AcovlYL0rVNkTrizS6Oqhq+YYMH4Sg== |
| Thread-topic: | [PATCH] vt-d: avoid obtaining iommu->register_lock too early in dma_msi_set_affinity() |
If set_desc_affinity() fails, the current code doesn't release the spinlock. We should obtain the lock at a later place. Thanks, -- Dexuan
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