Remove automatic block layer bouncing for unchecked_isa_dma All ISA drivers explicitely tell the block layer now that it needs to bounce for them, so SCSI mid layer doesn't need to do that automatically for unchecked_isa_dma anymore. Signed-off-by: Andi Kleen Signed-off-by: Andi Kleen --- drivers/scsi/scsi_lib.c | 2 -- 1 file changed, 2 deletions(-) Index: linux/drivers/scsi/scsi_lib.c =================================================================== --- linux.orig/drivers/scsi/scsi_lib.c +++ linux/drivers/scsi/scsi_lib.c @@ -1547,8 +1547,6 @@ u64 scsi_calculate_bounce_limit(struct S struct device *host_dev; u64 bounce_limit = 0xffffffff; - if (shost->unchecked_isa_dma) - return BLK_BOUNCE_ISA; /* * Platforms with virtual-DMA translation * hardware have no practical limit.