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Fix dma_unmap_sg() nents value

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The dma_unmap_sg() functions should be called with the same nents as the
dma_map_sg(), not the value the map function returned.

Fixes: ed10435d35 ("RDMA/erdma: Implement hierarchical MTT")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Link: https://patch.msgid.link/20250630092346.81017-2-fourier.thomas@gmail.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Thomas Fourier
2025-07-02 05:11:44 -04:00
committed by Leon Romanovsky
parent 449728196d
commit 1db50f7b7a
1 changed files with 2 additions and 1 deletions
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drivers/infiniband/hw/erdma/erdma_verbs.c
+2 -1
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@@ -629,7 +629,8 @@ err_free_mtt:
static void erdma_destroy_mtt_buf_sg(struct erdma_dev *dev,
struct erdma_mtt *mtt)
{
dma_unmap_sg(&dev->pdev->dev, mtt->sglist, mtt->nsg, DMA_TO_DEVICE);
dma_unmap_sg(&dev->pdev->dev, mtt->sglist,
DIV_ROUND_UP(mtt->size, PAGE_SIZE), DMA_TO_DEVICE);
vfree(mtt->sglist);
}