From 640847298e2b7f19e1376cf5a6fda0fce5d96fb2 Mon Sep 17 00:00:00 2001 From: Tang Yuantian Date: Thu, 29 Oct 2015 14:22:16 +0800 Subject: ahci: qoriq: Disable NCQ on ls2080a SoC NCQ feature can't be used due to the erratum A-008473. This patch disables NCQ as a workaround. Signed-off-by: Tang Yuantian Signed-off-by: Tejun Heo --- drivers/ata/ahci_qoriq.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers/ata/ahci_qoriq.c') diff --git a/drivers/ata/ahci_qoriq.c b/drivers/ata/ahci_qoriq.c index b9b691e83e17..d0f9de96e4ea 100644 --- a/drivers/ata/ahci_qoriq.c +++ b/drivers/ata/ahci_qoriq.c @@ -131,7 +131,7 @@ static struct ata_port_operations ahci_qoriq_ops = { .hardreset = ahci_qoriq_hardreset, }; -static const struct ata_port_info ahci_qoriq_port_info = { +static struct ata_port_info ahci_qoriq_port_info = { .flags = AHCI_FLAG_COMMON | ATA_FLAG_NCQ, .pio_mask = ATA_PIO4, .udma_mask = ATA_UDMA6, @@ -208,6 +208,12 @@ static int ahci_qoriq_probe(struct platform_device *pdev) if (rc) goto disable_resources; + /* Workaround for ls2080a */ + if (qoriq_priv->type == AHCI_LS2080A) { + hpriv->flags |= AHCI_HFLAG_NO_NCQ; + ahci_qoriq_port_info.flags &= ~ATA_FLAG_NCQ; + } + rc = ahci_platform_init_host(pdev, hpriv, &ahci_qoriq_port_info, &ahci_qoriq_sht); if (rc) -- cgit v1.2.3-59-g8ed1b