diff options
| author | Petr Tesarik <petr.tesarik.ext@huawei.com> | 2023-08-02 18:30:34 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2023-08-08 10:29:06 -0700 |
| commit | f94cb36e760d2a4d359ad64f5fafc62ca755fd72 (patch) | |
| tree | 80360c9e57b832efb78c95a8a145744bf419b953 /kernel/dma | |
| parent | 1395706a14904f2593debecf20f827e72d7392a7 (diff) | |
| download | linux-f94cb36e760d2a4d359ad64f5fafc62ca755fd72.tar.gz linux-f94cb36e760d2a4d359ad64f5fafc62ca755fd72.tar.bz2 linux-f94cb36e760d2a4d359ad64f5fafc62ca755fd72.zip | |
swiotlb: move slot allocation explanation comment where it belongs
Move the comment down in front of the loop that actually sets the list
member of struct io_tlb_slot to zero.
Fixes: 26a7e094783d ("swiotlb: refactor swiotlb_tbl_map_single")
Signed-off-by: Petr Tesarik <petr.tesarik.ext@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'kernel/dma')
| -rw-r--r-- | kernel/dma/swiotlb.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index d7eac84f975b..50a0e9c45c39 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -1018,11 +1018,6 @@ static int swiotlb_area_find_slots(struct device *dev, struct io_tlb_pool *pool, continue; } - /* - * If we find a slot that indicates we have 'nslots' number of - * contiguous buffers, we allocate the buffers from that slot - * and mark the entries as '0' indicating unavailable. - */ if (!iommu_is_span_boundary(slot_index, nslots, nr_slots(tbl_dma_addr), max_slots)) { @@ -1038,6 +1033,11 @@ not_found: return -1; found: + /* + * If we find a slot that indicates we have 'nslots' number of + * contiguous buffers, we allocate the buffers from that slot onwards + * and set the list of free entries to '0' indicating unavailable. + */ for (i = slot_index; i < slot_index + nslots; i++) { pool->slots[i].list = 0; pool->slots[i].alloc_size = alloc_size - (offset + |