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SubjectRe: strange interaction between IDE and ieee1394 driver
AS> When I user the ieee1394 subsystem to transmit data from a camcorder to an 
AS> IDE disk and the IDE driver is not using DMA, then there will be some data
AS> lost in the ieee1394 driver. If I turn on DMA in the IDE driver (hdparm -d1
AS> /dev/hda), I do not have any data loss in the ieee1394 driver. Also, on a

IDE is blocking interrupts for too long in non-DMA mode? Try hdparm -u 1
in non-dma mode - this may help if interrupt latency is the issue.

Meelis Roos (
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