linux-kernel - [PATCH 3.2 05/27] ahci: disable MSI on SAMSUNG 0xa800 SSD

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Date:	Mon, 29 Dec 2014 02:11:31 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Tejun Heo" <tj@...nel.org>,
	"Dominik Mierzejewski" <dominik@...ysector.net>
Subject: [PATCH 3.2 05/27] ahci: disable MSI on SAMSUNG 0xa800 SSD

3.2.66-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Tejun Heo <tj@...nel.org>

commit 2b21ef0aae65f22f5ba86b13c4588f6f0c2dbefb upstream.

Just like 0x1600 which got blacklisted by 66a7cbc303f4 ("ahci: disable
MSI instead of NCQ on Samsung pci-e SSDs on macbooks"), 0xa800 chokes
on NCQ commands if MSI is enabled.  Disable MSI.

Signed-off-by: Tejun Heo <tj@...nel.org>
Reported-by: Dominik Mierzejewski <dominik@...ysector.net>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=89171
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/ata/ahci.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -502,6 +502,7 @@ static const struct pci_device_id ahci_p
 	 * enabled.  https://bugzilla.kernel.org/show_bug.cgi?id=60731
 	 */
 	{ PCI_VDEVICE(SAMSUNG, 0x1600), board_ahci_nomsi },
+	{ PCI_VDEVICE(SAMSUNG, 0xa800), board_ahci_nomsi },
 
 	/* Enmotus */
 	{ PCI_DEVICE(0x1c44, 0x8000), board_ahci },

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