From 40fb59e75ad197a1c4ca2fbccef85432d8d103f8 Mon Sep 17 00:00:00 2001 From: Marc Carino Date: Sat, 24 Aug 2013 23:22:49 -0700 Subject: libata: Add H2D FIS "auxiliary" port flag Add a new port flag, ATA_FLAG_FPDMA_AUX, used to indicate support for transmission of the H2D FIS 'auxiliary' field. Signed-off-by: Marc Carino Signed-off-by: Tejun Heo --- drivers/ata/ahci.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/ata/ahci.c') diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 5064f3ea20f1..8d41c57fd969 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1288,6 +1288,14 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) */ if (!(hpriv->flags & AHCI_HFLAG_NO_FPDMA_AA)) pi.flags |= ATA_FLAG_FPDMA_AA; + + /* + * All AHCI controllers should be forward-compatible + * with the new auxiliary field. This code should be + * conditionalized if any buggy AHCI controllers are + * encountered. + */ + pi.flags |= ATA_FLAG_FPDMA_AUX; } if (hpriv->cap & HOST_CAP_PMP) -- cgit v1.2.2