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authorLevente Kurusa <levex@linux.com>2014-02-18 19:22:17 +0400
committerTejun Heo <tj@kernel.org>2014-02-18 19:22:17 +0400
commit67809f85d31eac600f6b28defa5386c9d2a13b1d (patch)
tree049137477323ea44a421dcb5e46e40ad8f926ace /drivers
parent8ad116e649b21a42e3cccfb3c1b8d5ea52ba19e5 (diff)
downloadlinux-67809f85d31eac600f6b28defa5386c9d2a13b1d.tar.xz
ahci: disable NCQ on Samsung pci-e SSDs on macbooks
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 Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers')
-rw-r--r--drivers/ata/ahci.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index dc2756fb6f33..7df81576a489 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -61,6 +61,7 @@ enum board_ids {
/* board IDs by feature in alphabetical order */
board_ahci,
board_ahci_ign_iferr,
+ board_ahci_noncq,
board_ahci_nosntf,
board_ahci_yes_fbs,
@@ -121,6 +122,13 @@ static const struct ata_port_info ahci_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
+ [board_ahci_noncq] = {
+ AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ),
+ .flags = AHCI_FLAG_COMMON,
+ .pio_mask = ATA_PIO4,
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &ahci_ops,
+ },
[board_ahci_nosntf] = {
AHCI_HFLAGS (AHCI_HFLAG_NO_SNTF),
.flags = AHCI_FLAG_COMMON,
@@ -452,6 +460,12 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(ASMEDIA, 0x0611), board_ahci }, /* ASM1061 */
{ PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci }, /* ASM1062 */
+ /*
+ * Samsung SSDs found on some macbooks. NCQ times out.
+ * https://bugzilla.kernel.org/show_bug.cgi?id=60731
+ */
+ { PCI_VDEVICE(SAMSUNG, 0x1600), board_ahci_noncq },
+
/* Enmotus */
{ PCI_DEVICE(0x1c44, 0x8000), board_ahci },