On Sat, Nov 16, 2019 at 08:06:05AM +0100, Christian Zigotzky wrote: > /* > * DMA addressing mode. > * > * 0 : 32 bit addressing for all chips. > * 1 : 40 bit addressing when supported by chip. > * 2 : 64 bit addressing when supported by chip, > * limited to 16 segments of 4 GB -> 64 GB max. > */ > #define SYM_CONF_DMA_ADDRESSING_MODE CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE > > Cyrus config: > > CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=1 > > I will configure “0 : 32 bit addressing for all chips” for the RC8. Maybe this is the solution. 0 means you are going to do bounce buffering a lot, which seems generally like a bad idea. But why are we talking about the sym53c8xx driver now? The last issue you reported was about video4linux allocations.