There is a bug between kernel and hdparm. hdparm can change the setting
on an IDE device. For example,
# hdparm -d1 -X 18 /dev/hda
will change the DMA mode on /dev/hda. However, the change is not
updated in the kernel data structure for hda. As the result,
# hdparm -i /dev/hda
# hdparm -d1 -X 18 /dev/hda
# hdparm -i /dev/hda
will not show the DMA mode change on /dev/hda.
-- H.J. Lu (hjl@gnu.org)- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/