diff options
| -rw-r--r-- | drivers/ata/libata-core.c | 6 | ||||
| -rw-r--r-- | include/linux/ata.h | 2 |
2 files changed, 6 insertions, 2 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); diff --git a/include/linux/ata.h b/include/linux/ata.h index c043c1ccf1c..40c7af05fdb 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -358,7 +358,7 @@ struct ata_taskfile { #define ata_id_removeable(id) ((id)[0] & (1 << 7)) #define ata_id_has_dword_io(id) ((id)[50] & (1 << 0)) #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) -#define ata_id_has_iordy(id) ((id)[49] & (1 << 9)) +#define ata_id_has_iordy(id) ((id)[49] & (1 << 11)) #define ata_id_u32(id,n) \ (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) #define ata_id_u64(id,n) \ |