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Commit c531077f authored by Daniel J Blueman's avatar Daniel J Blueman Committed by Jeff Garzik
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[libata] Prevent interface errors with Seagate FreeAgent GoFlex 



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: default avatarDaniel J Blueman <daniel@quora.org>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 91e4d5a1

drivers/ata/libata-core.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -4129,6 +4129,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { 




	/* Devices which aren't very happy with higher link speeds */

	/* Devices which aren't very happy with higher link speeds */

	{ "WD My Book",			NULL,	ATA_HORKAGE_1_5_GBPS, },

	{ "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

	 * Devices which choke on SETXFER.  Applies only if both the