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-rw-r--r--drivers/ide/ppc/pmac.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 816b5311dad6..5afdfef7264c 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -1138,6 +1138,7 @@ pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
hwif->drives[0].autotune = IDE_TUNE_AUTO;
hwif->drives[1].autotune = IDE_TUNE_AUTO;
hwif->host_flags = IDE_HFLAG_SET_PIO_MODE_KEEP_DMA |
+ IDE_HFLAG_PIO_NO_DOWNGRADE |
IDE_HFLAG_POST_SET_MODE;
hwif->pio_mask = ATA_PIO4;
hwif->set_pio_mode = pmac_ide_set_pio_mode;