diff options
| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-01-25 22:17:13 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-01-25 22:17:13 +0100 |
| commit | 3a6a3549afe7dfe212b6384106bec957bb393f3a (patch) | |
| tree | b007158eb759fc0a9d3561a939d19acfc443efb9 /drivers/ide | |
| parent | 8e7657ae0f56c14882e53ffdae8055c2b1624de1 (diff) | |
ide-cd: fix register loading order in cdrom_start_packet_command()
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>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/ide-cd.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index c7d77f0ad892..855a23c1c815 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -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. */ |