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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 16:17:13 -0500
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 16:17:13 -0500
commit3a6a3549afe7dfe212b6384106bec957bb393f3a (patch)
treeb007158eb759fc0a9d3561a939d19acfc443efb9 /drivers/ide/ide-cd.c
parent8e7657ae0f56c14882e53ffdae8055c2b1624de1 (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/ide-cd.c')
-rw-r--r--drivers/ide/ide-cd.c6
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,
917 if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) 917 if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
918 return startstop; 918 return startstop;
919 919
920 /* FIXME: for Virtual DMA we must check harder */
920 if (info->dma) 921 if (info->dma)
921 info->dma = !hwif->dma_setup(drive); 922 info->dma = !hwif->dma_setup(drive);
922 923
923 /* Set up the controller registers. */ 924 /* Set up the controller registers. */
924 /* FIXME: for Virtual DMA we must check harder */ 925 if (IDE_CONTROL_REG)
926 HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
925 HWIF(drive)->OUTB(info->dma, IDE_FEATURE_REG); 927 HWIF(drive)->OUTB(info->dma, IDE_FEATURE_REG);
926 HWIF(drive)->OUTB(0, IDE_IREASON_REG); 928 HWIF(drive)->OUTB(0, IDE_IREASON_REG);
927 HWIF(drive)->OUTB(0, IDE_SECTOR_REG); 929 HWIF(drive)->OUTB(0, IDE_SECTOR_REG);
928 930
929 HWIF(drive)->OUTB(xferlen & 0xff, IDE_BCOUNTL_REG); 931 HWIF(drive)->OUTB(xferlen & 0xff, IDE_BCOUNTL_REG);
930 HWIF(drive)->OUTB(xferlen >> 8 , IDE_BCOUNTH_REG); 932 HWIF(drive)->OUTB(xferlen >> 8 , IDE_BCOUNTH_REG);
931 if (IDE_CONTROL_REG)
932 HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
933 933
934 if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) { 934 if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
935 /* waiting for CDB interrupt, not DMA yet. */ 935 /* waiting for CDB interrupt, not DMA yet. */