On Thu, May 09, 2024 at 01:44:37PM +0200, Alexander Lobakin wrote: > If I remember correctly, *all* device drivers which use DMA *must* call > dma_set_*mask() on probe. That's why we added it there and didn't care. > Alternatively, if it really breaks a lot of drivers, we can set > dma_need_sync = true by default before the driver probing. I thought of > this, but the correct approach would be to call dma_set_*mask() from the > respective drivers. No, we default to 32-bit DMA for a lot of busses for historical reasons, especially platform devices.
