[PATCH 3.14 16/34] ahci: disable MSI on SAMSUNG 0xa800 SSD

From: Greg Kroah-Hartman
Date: Sun Dec 14 2014 - 15:47:04 EST

3.14-stable review patch. If anyone has any objections, please let me know.


From: Tejun Heo <tj@xxxxxxxxxx>

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@xxxxxxxxxx>
Reported-by: Dominik Mierzejewski <dominik@xxxxxxxxxxxxxx>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=89171
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/ata/ahci.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -496,6 +496,7 @@ 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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