Hi Andrea, On Mon, 28 Oct 2024 15:07:23 +0100 Andrea della Porta <andrea.porta@xxxxxxxx> wrote: > A missing or empty dma-ranges in a DT node implies a 1:1 mapping for dma > translations. In this specific case, the current behaviour is to zero out > the entire specifier so that the translation could be carried on as an > offset from zero. This includes address specifier that has flags (e.g. > PCI ranges). > Once the flags portion has been zeroed, the translation chain is broken > since the mapping functions will check the upcoming address specifier > against mismatching flags, always failing the 1:1 mapping and its entire > purpose of always succeeding. > Set to zero only the address portion while passing the flags through. > > Signed-off-by: Andrea della Porta <andrea.porta@xxxxxxxx> Tested ok with my LAN966x PCI device. Tested-by: Herve Codina <herve.codina@xxxxxxxxxxx> Best regards, Hervé
