From: Levente Kurusa <levex@linux.com>
Date: Tue, 18 Feb 2014 15:22:17 +0000 (-0500)
Subject: ahci: disable NCQ on Samsung pci-e SSDs on macbooks
X-Git-Tag: v3.2.56~75
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4da411ab87cfe8e7ae19da2544eca690282f56f0;p=pandora-kernel.git

ahci: disable NCQ on Samsung pci-e SSDs on macbooks

commit 67809f85d31eac600f6b28defa5386c9d2a13b1d upstream.

Samsung's pci-e SSDs with device ID 0x1600 which are found on some
macbooks time out on NCQ commands.  Blacklist NCQ on the device so
that the affected machines can at least boot.

Original-patch-by: Levente Kurusa <levex@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=60731
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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