21.04.2026 07:02, Mikko Perttunen пишет:
> Commit "iommu: return full error code from iommu_map_sg[_atomic]()"
> changed iommu_map_sgtable() to return an ssize_t and negative values
> in error cases, rather than a size_t and a zero.
>
> Update tegra_vde_iommu_map() to correctly check for errors from
> iommu_map_sgtable.
>
> Fixes: ad8f36e4b6b1 ("iommu: return full error code from
> iommu_map_sg[_atomic]()")
> Signed-off-by: Mikko Perttunen <[email protected]>
> ---
> drivers/media/platform/nvidia/tegra-vde/iommu.c | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/nvidia/tegra-vde/iommu.c
> b/drivers/media/platform/nvidia/tegra-vde/iommu.c
> index b1d9d841d944..824d2aa80a43 100644
> --- a/drivers/media/platform/nvidia/tegra-vde/iommu.c
> +++ b/drivers/media/platform/nvidia/tegra-vde/iommu.c
> @@ -25,6 +25,7 @@ int tegra_vde_iommu_map(struct tegra_vde *vde,
> unsigned long shift;
> unsigned long end;
> dma_addr_t addr;
> + ssize_t map_err;
>
> end = vde->domain->geometry.aperture_end;
> size = iova_align(&vde->iova, size);
> @@ -36,11 +37,11 @@ int tegra_vde_iommu_map(struct tegra_vde *vde,
>
> addr = iova_dma_addr(&vde->iova, iova);
>
> - size = iommu_map_sgtable(vde->domain, addr, sgt,
> - IOMMU_READ | IOMMU_WRITE);
> - if (!size) {
> + map_err = iommu_map_sgtable(vde->domain, addr, sgt,
> + IOMMU_READ | IOMMU_WRITE);
> + if (map_err < 0) {
> __free_iova(&vde->iova, iova);
> - return -ENXIO;
> + return map_err;
> }
>
> *iovap = iova;
>
Acked-by: Dmitry Osipenko <[email protected]>
