ide-atapi: teach ide atapi about drive->waiting_for_dma
In addition, we wait for DRQ to be asserted by repeatedly polling device status no matter what DRQ type each device implements. Signed-off-by: NBorislav Petkov <petkovbb@gmail.com> Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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