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From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: linux-ide@vger.kernel.org
Cc: Borislav Petkov <petkovbb@gmail.com>,
	Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 12/40] ide-tape: remove stale comments from idetape_pc_intr()
Date: Sun, 18 May 2008 20:56:16 +0200	[thread overview]
Message-ID: <20080518185616.5636.22797.sendpatchset@localhost.localdomain> (raw)
In-Reply-To: <20080518185428.5636.77234.sendpatchset@localhost.localdomain>

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-tape.c |   21 ---------------------
 1 file changed, 21 deletions(-)

Index: b/drivers/ide/ide-tape.c
===================================================================
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -758,27 +758,6 @@ static ide_startstop_t idetape_pc_intr(i
 
 	if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
 		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;
 		} else {
 			pc->xferred = pc->req_xfer;

  parent reply	other threads:[~2008-05-18 18:38 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-18 18:54 [PATCH 00/40] ide: generic ATAPI support Bartlomiej Zolnierkiewicz
2008-05-18 18:54 ` [PATCH 01/40] ide-scsi: fix race in idescsi_transfer_pc() Bartlomiej Zolnierkiewicz
2008-05-18 18:54 ` [PATCH 02/40] ide-scsi: fix DRQ checking for DMA transfers in idescsi_pc_intr() Bartlomiej Zolnierkiewicz
2008-05-18 18:54 ` [PATCH 03/40] ide-scsi: fix handling of DMA errors " Bartlomiej Zolnierkiewicz
2008-05-18 18:55 ` [PATCH 04/40] ide-scsi: fix Interrupt Reason checking " Bartlomiej Zolnierkiewicz
2008-05-19  5:10   ` Borislav Petkov
2008-05-27 18:30     ` Bartlomiej Zolnierkiewicz
2008-05-18 18:55 ` [PATCH 05/40] ide-scsi: merge idescsi_input_buffers() and idescsi_output_buffers() Bartlomiej Zolnierkiewicz
2008-05-18 18:55 ` [PATCH 06/40] ide-scsi: remove superfluous BUG_ON() from idescsi_transfer_pc() Bartlomiej Zolnierkiewicz
2008-05-18 18:55 ` [PATCH 07/40] ide-scsi: add debug_log() macro Bartlomiej Zolnierkiewicz
2008-05-18 18:55 ` [PATCH 08/40] ide-tape: idetape_pc_intr() should use local_irq_enable_in_hardirq() Bartlomiej Zolnierkiewicz
2008-05-18 18:55 ` [PATCH 09/40] ide-tape: remove superfluous error message from idetape_pc_intr() Bartlomiej Zolnierkiewicz
2008-05-18 18:55 ` [PATCH 10/40] ide-tape: remove superfluous warning message from idetape_issue_pc() Bartlomiej Zolnierkiewicz
2008-05-18 18:56 ` [PATCH 11/40] ide-tape: remove unneeded CONFIG_BLK_DEV_IDEDMA ifdef Bartlomiej Zolnierkiewicz
2008-05-18 18:56 ` Bartlomiej Zolnierkiewicz [this message]
2008-05-18 18:56 ` [PATCH 13/40] ide-tape: remove SIMULATE_ERRORS debug code Bartlomiej Zolnierkiewicz
2008-05-18 18:56 ` [PATCH 14/40] ide-floppy: merge idefloppy_transfer_pc() and idefloppy_transfer_pc1() Bartlomiej Zolnierkiewicz
2008-05-21  5:24   ` Borislav Petkov
2008-05-27 18:57     ` Bartlomiej Zolnierkiewicz
2008-05-27  5:37       ` Borislav Petkov
2008-05-29 23:01         ` Bartlomiej Zolnierkiewicz
2008-05-18 18:56 ` [PATCH 15/40] ide-{floppy,tape,scsi}: log device name instead of driver name Bartlomiej Zolnierkiewicz
2008-05-18 18:56 ` [PATCH 16/40] ide-tape: make idetape_retry_pc() void Bartlomiej Zolnierkiewicz
2008-05-18 18:57 ` [PATCH 17/40] ide-tape: merge callbacks Bartlomiej Zolnierkiewicz
2008-05-18 18:57 ` [PATCH 18/40] ide-tape: make pc->idetape_callback void Bartlomiej Zolnierkiewicz
2008-05-18 18:57 ` [PATCH 19/40] ide-floppy: merge callbacks Bartlomiej Zolnierkiewicz
2008-05-18 18:57 ` [PATCH 20/40] ide-{floppy,tape}: merge pc->idefloppy_callback and pc->idetape_callback Bartlomiej Zolnierkiewicz
2008-05-18 18:57 ` [PATCH 21/40] ide-{floppy,tape}: PC_FLAG_DMA_RECOMMENDED -> PC_FLAG_DMA_OK Bartlomiej Zolnierkiewicz
2008-05-18 18:57 ` [PATCH 22/40] ide-floppy: start DMA engine in idefloppy_transfer_pc1() Bartlomiej Zolnierkiewicz
2008-05-20 11:00   ` Sergei Shtylyov
2008-05-27 18:58     ` Bartlomiej Zolnierkiewicz
2008-05-18 18:57 ` [PATCH 23/40] ide-tape: set PC_FLAG_DMA_IN_PROGRESS flag in idetape_transfer_pc() Bartlomiej Zolnierkiewicz
2008-05-18 18:58 ` [PATCH 24/40] ide-tape: factor out waiting for good ireason from idetape_transfer_pc() Bartlomiej Zolnierkiewicz
2008-05-18 18:58 ` [PATCH 25/40] ide: add PC_FLAG_ZIP_DRIVE pc flag Bartlomiej Zolnierkiewicz
2008-05-18 18:58 ` [PATCH 26/40] ide-{cd,floppy,tape}: remove checking for drive->scsi Bartlomiej Zolnierkiewicz
2008-05-18 18:58 ` [PATCH 27/40] ide-scsi: set drive->scsi flag for devices handled by the driver Bartlomiej Zolnierkiewicz
2008-05-18 18:58 ` [PATCH 28/40] ide: add ide_transfer_pc() helper Bartlomiej Zolnierkiewicz
2008-05-18 18:58 ` [PATCH 29/40] ide-scsi: move idescsi_map_sg() call out from idescsi_issue_pc() Bartlomiej Zolnierkiewicz
2008-05-18 18:58 ` [PATCH 30/40] ide: add PC_FLAG_DRQ_INTERRUPT pc flag Bartlomiej Zolnierkiewicz
2008-05-18 18:59 ` [PATCH 31/40] ide: add ide_issue_pc() helper Bartlomiej Zolnierkiewicz
2008-05-18 18:59 ` [PATCH 32/40] ide-{floppy,tape}: move checking of ->failed_pc to ->callback Bartlomiej Zolnierkiewicz
2008-05-18 18:59 ` [PATCH 33/40] ide-tape: factor out DSC handling from idetape_pc_intr() Bartlomiej Zolnierkiewicz
2008-05-18 18:59 ` [PATCH 34/40] ide-tape: add ide_tape_io_buffers() helper Bartlomiej Zolnierkiewicz
2008-05-18 18:59 ` [PATCH 35/40] ide-tape: always log debug info in idetape_pc_intr() if debugging is enabled Bartlomiej Zolnierkiewicz
2008-05-18 18:59 ` [PATCH 36/40] ide-floppy: add more debugging to idefloppy_pc_intr() Bartlomiej Zolnierkiewicz
2008-05-18 19:00 ` [PATCH 37/40] ide-scsi: use pc->callback Bartlomiej Zolnierkiewicz
2008-05-18 19:00 ` [PATCH 38/40] ide-scsi: add more debugging to idescsi_pc_intr() Bartlomiej Zolnierkiewicz
2008-05-18 19:00 ` [PATCH 39/40] ide-{floppy,scsi}: read Status Register before stopping DMA engine Bartlomiej Zolnierkiewicz
2008-05-18 19:00 ` [PATCH 40/40] ide: add ide_pc_intr() helper Bartlomiej Zolnierkiewicz
2008-05-22  7:43 ` [PATCH 00/40] ide: generic ATAPI support Borislav Petkov
2008-05-25 13:23   ` Bartlomiej Zolnierkiewicz

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