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nouveau: reset dma_nr in nouveau_dmem_migrate_alloc_and_copy

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When we start a new batch of dma_map operations we need to reset dma_nr,
as we start filling a newly allocated array.

Link: https://lore.kernel.org/r/20190814075928.23766-3-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Tested-by: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Christoph Hellwig 2019-08-14 09:59:20 +02:00 committed by Jason Gunthorpe
parent a7d1f22bb7
commit dea027f282
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/nouveau/nouveau_dmem.c
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@ -682,6 +682,7 @@ nouveau_dmem_migrate_alloc_and_copy(struct vm_area_struct *vma,
migrate->dma = kmalloc(sizeof(*migrate->dma) * npages, GFP_KERNEL);
if (!migrate->dma)
goto error;
migrate->dma_nr = 0;
/* Copy things over */
copy = drm->dmem->migrate.copy_func;