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Date: Fri, 28 Sep 2012 13:34:36 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, alan@...rguk.ukuu.org.uk, Daniel J Blueman <daniel@...ra.org>, Jeff Garzik <jgarzik@...hat.com> Subject: [ 103/127] libata: Prevent interface errors with Seagate FreeAgent GoFlex 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Daniel J Blueman <daniel@...ra.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@...ra.org> Signed-off-by: Jeff Garzik <jgarzik@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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