diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 8a79b976f08..02425e401a6 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2759,7 +2759,11 @@ static int ata_dev_set_mode(struct ata_device *dev) /* Old CFA may refuse this command, which is just fine */ if (dev->xfer_shift == ATA_SHIFT_PIO && ata_id_is_cfa(dev->id)) err_mask &= ~AC_ERR_DEV; - + /* Some very old devices and some bad newer ones fail any kind of + SET_XFERMODE request but support PIO0-2 timings and no IORDY */ + if (dev->xfer_shift == ATA_SHIFT_PIO && !ata_id_has_iordy(dev->id) && + dev->pio_mode <= XFER_PIO_2) + err_mask &= ~AC_ERR_DEV; if (err_mask) { ata_dev_printk(dev, KERN_ERR, "failed to set xfermode " "(err_mask=0x%x)\n", err_mask); |