On Sat, Feb 20, 2016 at 12:01:53PM +0100, Ondrej Zary wrote:

Currently, workaround for broken WD drives is applied always, slowing
down all drives. And it has a bug - it's not applied after resume.

Apply the workaround only if the error really appears
(SErr == 0x1000500). This allows unaffected drives to run at full speed
(provided that no affected drive is connected to the controller).
Also make sure the workaround is re-applied on resume.

...

Signed-off-by: Ondrej Zary <redacted>

Applied to libata/for-4.6.

Thanks.

-- 
tejun