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ide-tape: remove stale comments from idetape_pc_intr()

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Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-07-15 21:21:54 +02:00
parent 91395a1630
commit 531e9e5054
1 changed files with 0 additions and 21 deletions
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21
drivers/ide/ide-tape.c
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@ -758,27 +758,6 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
if (hwif->dma_ops->dma_end(drive) || (stat & ERR_STAT)) { if (hwif->dma_ops->dma_end(drive) || (stat & ERR_STAT)) {
/*
* A DMA error is sometimes expected. For example,
* if the tape is crossing a filemark during a
* READ command, it will issue an irq and position
* itself before the filemark, so that only a partial
* data transfer will occur (which causes the DMA
* error). In that case, we will later ask the tape
* how much bytes of the original request were
* actually transferred (we can't receive that
* information from the DMA engine on most chipsets).
*/
/*
* On the contrary, a DMA error is never expected;
* it usually indicates a hardware error or abort.
* If the tape crosses a filemark during a READ
* command, it will issue an irq and position itself
* after the filemark (not before). Only a partial
* data transfer will occur, but no DMA error.
* (AS, 19 Apr 2001)
*/
pc->flags |= PC_FLAG_DMA_ERROR; pc->flags |= PC_FLAG_DMA_ERROR;
} else { } else {
pc->xferred = pc->req_xfer; pc->xferred = pc->req_xfer;