[libata] ahci: Withdraw IGN_SERR_INTERNAL for SB800 SATA
There is an issue in ATI SB600/SB700 SATA that PxSERR.E should not be
set on some conditions, which will lead to many SATA ODD error messages.
commit 55a61604cd1354e1783364e1c901034f2f474b7d is the workaround.
Since SB800 fixed this HW issue, IGN_SERR_INTERNAL should be withdrawn
for SB800.
Signed-off-by: Shane Huang <shane.huang@amd.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 6dc4621..7f701cb 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -105,7 +105,7 @@
board_ahci_ign_iferr = 2,
board_ahci_sb600 = 3,
board_ahci_mv = 4,
- board_ahci_sb700 = 5,
+ board_ahci_sb700 = 5, /* for SB700 and SB800 */
board_ahci_mcp65 = 6,
board_ahci_nopmp = 7,
@@ -439,7 +439,7 @@
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
- /* board_ahci_sb700 */
+ /* board_ahci_sb700, for SB700 and SB800 */
{
AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL),
.flags = AHCI_FLAG_COMMON,
@@ -2612,6 +2612,10 @@
(pdev->revision == 0xa1 || pdev->revision == 0xa2))
hpriv->flags |= AHCI_HFLAG_NO_MSI;
+ /* SB800 does NOT need the workaround to ignore SERR_INTERNAL */
+ if (board_id == board_ahci_sb700 && pdev->revision >= 0x40)
+ hpriv->flags &= ~AHCI_HFLAG_IGN_SERR_INTERNAL;
+
if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
pci_intx(pdev, 1);