Re: [RFC PATCH 05/11] media: iris: Skip DMA mask setting to core device when IOMMU is not mapped

[Dmitry Baryshkov]

On Thu, Jul 09, 2026 at 06:05:51PM +0530, Vikash Garodia wrote:
> The non-pixel and pixel subnodes move the IOMMU streams away from the
> iris parent device. As a result, the core device may not have an IOMMU
> mapping, and setting its DMA mask is unnecessary.
> Legacy platforms that have not migrated to subnodes still associate the
> streams with the parent device and still need the DMA mask setup. Call
> dma_set_mask_and_coherent() only when an IOMMU is mapped to the iris
> core device.
> 
> Co-developed-by: Vishnu Reddy <busanna.reddy@xxxxxxxxxxxxxxxx>
> Signed-off-by: Vishnu Reddy <busanna.reddy@xxxxxxxxxxxxxxxx>
> Signed-off-by: Vikash Garodia <vikash.garodia@xxxxxxxxxxxxxxxx>
> ---
>  drivers/media/platform/qcom/iris/iris_probe.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>


-- 
With best wishes
Dmitry