On Wed, Nov 07, 2018 at 04:30:32PM +0000, Robin Murphy wrote:
> of_dma_configure() was *supposed* to be following the same logic as
> acpi_dma_configure() and only setting bus_dma_mask if some range was
> specified by the firmware. However, it seems that subtlety got lost in
> the process of fitting it into the differently-shaped control flow, and
> as a result the force_dma==true case ends up always setting the bus mask
> to the 32-bit default, which is not what anyone wants.
>
> Make sure we only touch it if the DT actually said so.
>
> Fixes: 6c2fb2ea7636 ("of/device: Set bus DMA mask as appropriate")
> Reported-by: Aaro Koskinen <[email protected]>
> Reported-by: Jean-Philippe Brucker <[email protected]>
> Tested-by: Aaro Koskinen <[email protected]>
> Tested-by: John Stultz <[email protected]>
> Tested-by: Geert Uytterhoeven <[email protected]>
> Tested-by: Robert Richter <[email protected]>
> Signed-off-by: Robin Murphy <[email protected]>
> ---
>
> v2: Add comment, collect tested-by tags
>
> drivers/of/device.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
Applied, thanks.
Rob
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