diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/iova.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/pci/iova.c b/drivers/pci/iova.c index 9606e599a475..c5c274ab5c5a 100644 --- a/drivers/pci/iova.c +++ b/drivers/pci/iova.c | |||
| @@ -63,8 +63,16 @@ __cached_rbnode_delete_update(struct iova_domain *iovad, struct iova *free) | |||
| 63 | curr = iovad->cached32_node; | 63 | curr = iovad->cached32_node; |
| 64 | cached_iova = container_of(curr, struct iova, node); | 64 | cached_iova = container_of(curr, struct iova, node); |
| 65 | 65 | ||
| 66 | if (free->pfn_lo >= cached_iova->pfn_lo) | 66 | if (free->pfn_lo >= cached_iova->pfn_lo) { |
| 67 | iovad->cached32_node = rb_next(&free->node); | 67 | struct rb_node *node = rb_next(&free->node); |
| 68 | struct iova *iova = container_of(node, struct iova, node); | ||
| 69 | |||
| 70 | /* only cache if it's below 32bit pfn */ | ||
| 71 | if (node && iova->pfn_lo < iovad->dma_32bit_pfn) | ||
| 72 | iovad->cached32_node = node; | ||
| 73 | else | ||
| 74 | iovad->cached32_node = NULL; | ||
| 75 | } | ||
| 68 | } | 76 | } |
| 69 | 77 | ||
| 70 | /* Computes the padding size required, to make the | 78 | /* Computes the padding size required, to make the |