diff options
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ahci_ceva.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/ata/ahci_ceva.c b/drivers/ata/ahci_ceva.c index aa32c8a0f083..b63fab2507fa 100644 --- a/drivers/ata/ahci_ceva.c +++ b/drivers/ata/ahci_ceva.c @@ -81,8 +81,26 @@ struct ceva_ahci_priv { int flags; }; +static unsigned int ceva_ahci_read_id(struct ata_device *dev, + struct ata_taskfile *tf, u16 *id) +{ + u32 err_mask; + + err_mask = ata_do_dev_read_id(dev, tf, id); + if (err_mask) + return err_mask; + /* + * Since CEVA controller does not support device sleep feature, we + * need to clear DEVSLP (bit 8) in word78 of the IDENTIFY DEVICE data. + */ + id[ATA_ID_FEATURE_SUPP] &= cpu_to_le16(~(1 << 8)); + + return 0; +} + static struct ata_port_operations ahci_ceva_ops = { .inherits = &ahci_platform_ops, + .read_id = ceva_ahci_read_id, }; static const struct ata_port_info ahci_ceva_port_info = { |