From: Kefeng Wang <kefeng.wang@xxxxxxxxxx> Append AHCI_HFLAG_NO_FBS to force turning off FBS flag. Signed-off-by: Haojian Zhuang <haojian.zhuang@xxxxxxxxxx> Signed-off-by: Kefeng Wang <kefeng.wang@xxxxxxxxxx> --- drivers/ata/ahci.h | 1 + drivers/ata/libahci.c | 5 +++++ 2 files changed, 6 insertions(+), 0 deletions(-) diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index 51af275..60db49b 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -235,6 +235,7 @@ enum { port start (wait until error-handling stage) */ AHCI_HFLAG_MULTI_MSI = (1 << 16), /* multiple PCI MSIs */ + AHCI_HFLAG_NO_FBS = (1 << 17), /* no FBS */ /* ap->flags bits */ diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 6bd4f66..573edb3 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -452,6 +452,11 @@ void ahci_save_initial_config(struct device *dev, cap &= ~HOST_CAP_SNTF; } + if ((cap & HOST_CAP_FBS) && (hpriv->flags & AHCI_HFLAG_NO_FBS)) { + dev_info(dev, "controller can't do FBS, turning off CAP_FBS\n"); + cap &= ~HOST_CAP_FBS; + } + if (!(cap & HOST_CAP_FBS) && (hpriv->flags & AHCI_HFLAG_YES_FBS)) { dev_info(dev, "controller can do FBS, turning on CAP_FBS\n"); cap |= HOST_CAP_FBS; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html