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vfio/type1: Fix vfio_find_dma_valid return

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vfio_find_dma_valid is defined to return WAITED on success if it was
necessary to wait.  However, the loop forgets the WAITED value returned
by vfio_wait() and returns 0 in a later iteration.  Fix it.

Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Reviewed-by: Steve Sistare <steven.sistare@oracle.com>
Link: https://lore.kernel.org/r/1629736550-2388-1-git-send-email-anthony.yznaga@oracle.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Anthony Yznaga
2021-08-23 09:35:50 -07:00
committed by Alex Williamson
parent eb24c1007e
commit ffc95d1b8e
1 changed files with 4 additions and 4 deletions
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8
drivers/vfio/vfio_iommu_type1.c
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@ -612,17 +612,17 @@ static int vfio_wait(struct vfio_iommu *iommu)
static int vfio_find_dma_valid(struct vfio_iommu *iommu, dma_addr_t start, static int vfio_find_dma_valid(struct vfio_iommu *iommu, dma_addr_t start,
size_t size, struct vfio_dma **dma_p) size_t size, struct vfio_dma **dma_p)
{ {
int ret; int ret = 0;
do { do {
*dma_p = vfio_find_dma(iommu, start, size); *dma_p = vfio_find_dma(iommu, start, size);
if (!*dma_p) if (!*dma_p)
ret = -EINVAL; return -EINVAL;
else if (!(*dma_p)->vaddr_invalid) else if (!(*dma_p)->vaddr_invalid)
ret = 0; return ret;
else else
ret = vfio_wait(iommu); ret = vfio_wait(iommu);
} while (ret > 0); } while (ret == WAITED);
return ret; return ret;
} }