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authorJeff Garzik <jeff@garzik.org>2012-08-17 13:36:59 -0400
committerJeff Garzik <jgarzik@redhat.com>2012-08-17 13:36:59 -0400
commit04d0f1b84927169cdaa4e3a24da768a9fd9aca6f (patch)
treee13bb1541b1e13398be005bf405067951dc8a204 /drivers/ata/libata-core.c
parentebd600281566ab40fb2e3004af7eacb3375626d1 (diff)
downloadlinux-linaro-stable-04d0f1b84927169cdaa4e3a24da768a9fd9aca6f.tar.gz
[libata] new quirk, lift bridge limits for Buffalo DriveStation Quattro
Michael Eitelwein writes: I have an external SATA drive that was slowed down by bridge limits. I found a solution in a thread on this list posted in 2008: It introduces whitelist entries in libata-core.c for devices with well working bridges (e.g. email on Fri, 31 Oct 2008 01:45:27 -0400). I added my device to this whitelist in a custom built kernel and it works fine for weeks now. How can I have this device added on the whitelist within the official kernel? Is this whitelist mechanism still supported or is there a smarter way to achieve whitelisting? I added the following whitelist entry for my Buffalo DriveStation Quattro "BUFFALO HD-QSU2/R5": /* Devices that do not need bridging limits applied */ { "MTRON MSP-SATA*", NULL, ATA_HORKAGE_BRIDGE_OK, }, { "BUFFALO HD-QSU2/R5", NULL, ATA_HORKAGE_BRIDGE_OK, }, Reported-by: Michael Eitelwein <michael@eitelwein.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r--drivers/ata/libata-core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index fadd5866d40f..5eee1c1537d2 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4128,6 +4128,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
/* Devices that do not need bridging limits applied */
{ "MTRON MSP-SATA*", NULL, ATA_HORKAGE_BRIDGE_OK, },
+ { "BUFFALO HD-QSU2/R5", NULL, ATA_HORKAGE_BRIDGE_OK, },
/* Devices which aren't very happy with higher link speeds */
{ "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, },