On Thu, Aug 26, 2021 at 02:10:05PM +0200, Michael Walle wrote: > + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(40); > + pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; Please use dma_coerce_mask_and_coherent() here instead. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!