From e7190699ca8c8daa52bfc62c01a71dea6decc9ee Mon Sep 17 00:00:00 2001 From: Patrice Chotard Date: Wed, 10 Aug 2016 17:37:29 +0200 Subject: [PATCH] ahci: st: Add ports-implemented property in support Despite ST AHCI version = 1.3, reading HOST_PORTS_IMPL returns 0. So force_port_map to 1 by using ports-implemented DT property. Signed-off-by: Patrice Chotard Signed-off-by: Tejun Heo --- drivers/ata/ahci_st.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/ata/ahci_st.c b/drivers/ata/ahci_st.c index 8ff428fe8e0f..bc345f249555 100644 --- a/drivers/ata/ahci_st.c +++ b/drivers/ata/ahci_st.c @@ -147,6 +147,7 @@ static struct scsi_host_template ahci_platform_sht = { static int st_ahci_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct st_ahci_drv_data *drv_data; struct ahci_host_priv *hpriv; int err; @@ -170,6 +171,9 @@ static int st_ahci_probe(struct platform_device *pdev) st_ahci_configure_oob(hpriv->mmio); + of_property_read_u32(dev->of_node, + "ports-implemented", &hpriv->force_port_map); + err = ahci_platform_init_host(pdev, hpriv, &st_ahci_port_info, &ahci_platform_sht); if (err) { -- 2.20.1