[PATCH 4/7] dma-mapping: Add helpers for dma_range_map bounds

[Jason Gunthorpe]

On Wed, Nov 29, 2023 at 05:43:01PM +0000, Robin Murphy wrote:
> Several places want to compute the lower and/or upper bounds of a
> dma_range_map, so let's factor that out into reusable helpers.
> 
> Signed-off-by: Robin Murphy <robin.murphy at arm.com>
> ---
>  arch/loongarch/kernel/dma.c |  9 ++-------
>  drivers/acpi/arm64/dma.c    |  8 +-------
>  drivers/of/device.c         | 11 ++---------
>  include/linux/dma-direct.h  | 18 ++++++++++++++++++
>  4 files changed, 23 insertions(+), 23 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg at nvidia.com>

Jason