| From c531077f40abc9f2129c4c83a30b3f8d6ce1c0e7 Mon Sep 17 00:00:00 2001 |
| From: Daniel J Blueman <daniel@quora.org> |
| Date: Mon, 23 Jul 2012 12:22:37 +0800 |
| Subject: libata: Prevent interface errors with Seagate FreeAgent GoFlex |
| |
| From: Daniel J Blueman <daniel@quora.org> |
| |
| commit c531077f40abc9f2129c4c83a30b3f8d6ce1c0e7 upstream. |
| |
| When using my Seagate FreeAgent GoFlex eSATAp external disk enclosure, |
| interface errors are always seen until 1.5Gbps is negotiated [1]. This |
| occurs using any disk in the enclosure, and when the disk is connected |
| directly with a generic passive eSATAp cable, we see stable 3Gbps |
| operation as expected. |
| |
| Blacklist 3Gbps mode to avoid dataloss and the ~30s delay bus reset |
| and renegotiation incurs. |
| |
| Signed-off-by: Daniel J Blueman <daniel@quora.org> |
| Signed-off-by: Jeff Garzik <jgarzik@redhat.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/ata/libata-core.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| --- a/drivers/ata/libata-core.c |
| +++ b/drivers/ata/libata-core.c |
| @@ -4138,6 +4138,7 @@ static const struct ata_blacklist_entry |
| |
| /* Devices which aren't very happy with higher link speeds */ |
| { "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, }, |
| + { "Seagate FreeAgent GoFlex", NULL, ATA_HORKAGE_1_5_GBPS, }, |
| |
| /* |
| * Devices which choke on SETXFER. Applies only if both the |
