Messages in this thread | | | From | Bartlomiej Zolnierkiewicz <> | Subject | Re: [PATCH] ide: Fix drive's DWORD-IO handling | Date | Fri, 19 Dec 2008 20:01:50 +0100 |
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On Thursday 18 December 2008, Mario Schwalbe wrote: > Resubmitted on request. > > According the documentation, id[ATA_ID_DWORD_IO] is non-zero if > the drive supports dword IO, while the code disables support by > setting IDE_DFLAG_NO_IO_32BIT. In addition, this word has been > reused by the ATA8 specification. This patch fixes both cases. > > Signed-off-by: Mario Schwalbe <schwalbe@inf.tu-dresden.de> > --- > drivers/ide/ide-probe.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c > index c55bdbd..859b0e5 100644 > --- a/drivers/ide/ide-probe.c > +++ b/drivers/ide/ide-probe.c > @@ -856,7 +856,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif) > ide_drive_t *drive = &hwif->drives[unit]; > > if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) || > - drive->id[ATA_ID_DWORD_IO]) > + !ata_id_has_dword_io(drive->id)) > drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT; > else > drive->dev_flags &= ~IDE_DFLAG_NO_IO_32BIT;
Since it seems that libata developers need more time to fully analyze issues with ata_id_has_dword_io() and I don't want to delay this fix because if it could you please modify the patch according to Sergei's suggestion of removing id[ATA_ID_DWORD_IO] check altogether?
[ It is a safe thing to do since the old code has been enabling 32-bit I/O _unless_ the ATA-1 dword I/O bit for VU compatibility was set... ]
Thanks, Bart
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