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: default avatarSergei Shtylyov <>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <>
parent 8e7657ae
......@@ -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 */
HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
HWIF(drive)->OUTB(info->dma, IDE_FEATURE_REG);
HWIF(drive)->OUTB(xferlen & 0xff, IDE_BCOUNTL_REG);
HWIF(drive)->OUTB(xferlen >> 8 , IDE_BCOUNTH_REG);
HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
/* waiting for CDB interrupt, not DMA yet. */
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment