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ide-cd: fix register loading order in cdrom_start_packet_command()
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Load IDE_CONTROL_REG before other registers in cdrom_start_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).

While at it move misplaced FIXME comment in the right place.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz committed Jan 25, 2008
1 parent 8e7657a commit 3a6a354
Showing 1 changed file with 3 additions and 3 deletions.
6 changes: 3 additions & 3 deletions drivers/ide/ide-cd.c
Original file line number Diff line number Diff line change
Expand Up @@ -917,19 +917,19 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
return startstop;

/* FIXME: for Virtual DMA we must check harder */
if (info->dma)
info->dma = !hwif->dma_setup(drive);

/* Set up the controller registers. */
/* FIXME: for Virtual DMA we must check harder */
if (IDE_CONTROL_REG)
HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
HWIF(drive)->OUTB(info->dma, IDE_FEATURE_REG);
HWIF(drive)->OUTB(0, IDE_IREASON_REG);
HWIF(drive)->OUTB(0, IDE_SECTOR_REG);

HWIF(drive)->OUTB(xferlen & 0xff, IDE_BCOUNTL_REG);
HWIF(drive)->OUTB(xferlen >> 8 , IDE_BCOUNTH_REG);
if (IDE_CONTROL_REG)
HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);

if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
/* waiting for CDB interrupt, not DMA yet. */
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