From e9952c7a1f7640ec71e423d5a374245b63fd6e91 Mon Sep 17 00:00:00 2001 From: Levente Kurusa Date: Tue, 18 Feb 2014 10:22:17 -0500 Subject: 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 Signed-off-by: Tejun Heo Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=60731 Signed-off-by: Greg Kroah-Hartman --- drivers/ata/ahci.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/ata') diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index e3a92a6da39a..2ecf42ff1051 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, @@ -119,6 +120,13 @@ 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, @@ -450,6 +458,12 @@ 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 }, -- cgit v1.2.3