On Tue, Nov 14, 2017 at 04:17:25PM -0600, David Milburn wrote: > During hotplug, it is possible for 6Gbps link speed to > be limited all the way down to 1.5 Gbps which may lead > to a slower link speed when drive is re-connected. > > This behavior has been seen on a Intel Lewisburg SATA > controller (8086:a1d2) with HGST HUH728080ALE600 drive > where SATA link speed was limited to 1.5 Gbps and > when re-connected the link came up 3.0 Gbps. > > This patch was retested on above configuration and > showed the hotplugged link to come back online at max > speed (6Gbps). I did not see the downgrade when testing > on Intel C600/X79, but retested patched linux-4.14-rc5 > kernel and didn't see any side effects from this > change. Also, successfully retested hotplug on port > multiplier 3Gbps link. > > Signed-off-by: David Milburn <dmilburn@xxxxxxxxxx> Applied to libata/for-4.15-fixes. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
