linux-kernel - [PATCH 3.4 027/176] ahci: disable MSI on SAMSUNG 0xa800 SSD

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Message-Id: <1428569224-23820-27-git-send-email-lizf@kernel.org>
Date:	Thu,  9 Apr 2015 16:44:35 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>,
	Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 027/176] ahci: disable MSI on SAMSUNG 0xa800 SSD

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

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

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


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: Zefan Li <lizefan@...wei.com>
---
 drivers/ata/ahci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 4aa63bf..6fc61eb 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -493,6 +493,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	 * 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 },
-- 
1.9.1

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