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dma-mapping fix for Linux 6.3

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- fix a braino in the swiotlb alignment check fix (Petr Tesarik)
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Merge tag 'dma-mapping-6.3-2023-04-08' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fix from Christoph Hellwig:

 - fix a braino in the swiotlb alignment check fix (Petr Tesarik)

* tag 'dma-mapping-6.3-2023-04-08' of git://git.infradead.org/users/hch/dma-mapping:
  swiotlb: fix a braino in the alignment check fix
This commit is contained in:
Linus Torvalds 2023-04-08 11:10:49 -07:00
commit 973ad544f0
1 changed files with 3 additions and 3 deletions
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6
kernel/dma/swiotlb.c
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@ -623,7 +623,7 @@ static int swiotlb_do_find_slots(struct device *dev, int area_index,
phys_to_dma_unencrypted(dev, mem->start) & boundary_mask;
unsigned long max_slots = get_max_slots(boundary_mask);
unsigned int iotlb_align_mask =
dma_get_min_align_mask(dev) & ~(IO_TLB_SIZE - 1);
dma_get_min_align_mask(dev) | alloc_align_mask;
unsigned int nslots = nr_slots(alloc_size), stride;
unsigned int offset = swiotlb_align_offset(dev, orig_addr);
unsigned int index, slots_checked, count = 0, i;
@ -639,8 +639,8 @@ static int swiotlb_do_find_slots(struct device *dev, int area_index,
* allocations.
*/
if (alloc_size >= PAGE_SIZE)
iotlb_align_mask &= PAGE_MASK;
iotlb_align_mask &= alloc_align_mask;
iotlb_align_mask |= ~PAGE_MASK;
iotlb_align_mask &= ~(IO_TLB_SIZE - 1);
/*
* For mappings with an alignment requirement don't bother looping to