diff options
| -rw-r--r-- | drivers/ata/ahci.h | 3 | ||||
| -rw-r--r-- | drivers/ata/libahci.c | 5 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index b1750007c8dc..feb127ef4e4e 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -210,6 +210,9 @@ enum { AHCI_HFLAG_NO_SNTF = (1 << 12), /* no sntf */ AHCI_HFLAG_NO_FPDMA_AA = (1 << 13), /* no FPDMA AA */ AHCI_HFLAG_YES_FBS = (1 << 14), /* force FBS cap on */ + AHCI_HFLAG_DELAY_ENGINE = (1 << 15), /* do not start engine on + port start (wait until + error-handling stage) */ /* ap->flags bits */ diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index a72bfd0ecfee..f9eaa82311a9 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -737,6 +737,7 @@ static void ahci_power_down(struct ata_port *ap) static void ahci_start_port(struct ata_port *ap) { + struct ahci_host_priv *hpriv = ap->host->private_data; struct ahci_port_priv *pp = ap->private_data; struct ata_link *link; struct ahci_em_priv *emp; @@ -746,6 +747,10 @@ static void ahci_start_port(struct ata_port *ap) /* enable FIS reception */ ahci_start_fis_rx(ap); + /* enable DMA */ + if (!(hpriv->flags & AHCI_HFLAG_DELAY_ENGINE)) + ahci_start_engine(ap); + /* turn on LEDs */ if (ap->flags & ATA_FLAG_EM) { ata_for_each_link(link, ap, EDGE) { |