From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: linux-ide@vger.kernel.org
Subject: [PATCH 9/15] ide-{floppy,tape,scsi}: fix register loading order when issuing packet command
Date: Wed, 31 Oct 2007 00:29:43 +0100 [thread overview]
Message-ID: <200710310029.43301.bzolnier@gmail.com> (raw)
Load IDE_BCOUNTL_REG before IDE_BCOUNTH_REG when issuing packet command.
It shouldn't affect anything (just a usual paranoia to separate changes
which change the way in which hardware is accessed from code cleanups).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ide-floppy.c | 2 +-
drivers/ide/ide-tape.c | 2 +-
drivers/scsi/ide-scsi.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
Index: b/drivers/ide/ide-floppy.c
===================================================================
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -1071,8 +1071,8 @@ static ide_startstop_t idefloppy_issue_p
HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
/* Use PIO/DMA */
hwif->OUTB(dma, IDE_FEATURE_REG);
- hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
hwif->OUTB(bcount & 0xff, IDE_BCOUNTL_REG);
+ hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG);
if (dma) { /* Begin DMA, if necessary */
Index: b/drivers/ide/ide-tape.c
===================================================================
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2174,8 +2174,8 @@ static ide_startstop_t idetape_issue_pac
if (IDE_CONTROL_REG)
hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
hwif->OUTB(dma_ok ? 1 : 0, IDE_FEATURE_REG); /* Use PIO/DMA */
- hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
hwif->OUTB(bcount & 0xff, IDE_BCOUNTL_REG);
+ hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
hwif->OUTB(drive->select.all, IDE_SELECT_REG);
if (dma_ok) /* Will begin DMA later */
set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
Index: b/drivers/scsi/ide-scsi.c
===================================================================
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -599,8 +599,8 @@ static ide_startstop_t idescsi_issue_pc
HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
hwif->OUTB(dma, IDE_FEATURE_REG);
- hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
hwif->OUTB(bcount & 0xff, IDE_BCOUNTL_REG);
+ hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
if (dma)
set_bit(PC_DMA_OK, &pc->flags);
next reply other threads:[~2007-10-30 23:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-30 23:29 Bartlomiej Zolnierkiewicz [this message]
2007-11-04 13:09 ` [PATCH 9/15] ide-{floppy,tape,scsi}: fix register loading order when issuing packet command Sergei Shtylyov
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