diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index da7ee8bec165..7add8e79912b 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -257,7 +257,7 @@ enum {
 	PCS_7				= 0x94, /* 7+ port PCS (Denverton) */
 
 	/* em constants */
-	EM_MAX_SLOTS			= 8,
+	EM_MAX_SLOTS			= SATA_PMP_MAX_PORTS,
 	EM_MAX_RETRY			= 5,
 
 	/* em_ctl bits */
diff --git a/drivers/ata/ahci_brcm.c b/drivers/ata/ahci_brcm.c
index f61795c546cf..6f216eb25610 100644
--- a/drivers/ata/ahci_brcm.c
+++ b/drivers/ata/ahci_brcm.c
@@ -448,7 +448,7 @@ static int brcm_ahci_probe(struct platform_device *pdev)
 	if (!of_id)
 		return -ENODEV;
 
-	priv->version = (enum brcm_ahci_version)of_id->data;
+	priv->version = (unsigned long)of_id->data;
 	priv->dev = dev;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "top-ctrl");
diff --git a/drivers/ata/ahci_imx.c b/drivers/ata/ahci_imx.c
index b734e069034d..a950767f7948 100644
--- a/drivers/ata/ahci_imx.c
+++ b/drivers/ata/ahci_imx.c
@@ -1067,7 +1067,7 @@ static int imx_ahci_probe(struct platform_device *pdev)
 	imxpriv->ahci_pdev = pdev;
 	imxpriv->no_device = false;
 	imxpriv->first_time = true;
-	imxpriv->type = (enum ahci_imx_type)of_id->data;
+	imxpriv->type = (unsigned long)of_id->data;
 
 	imxpriv->sata_clk = devm_clk_get(dev, "sata");
 	if (IS_ERR(imxpriv->sata_clk)) {
@@ -1235,4 +1235,4 @@ module_platform_driver(imx_ahci_driver);
 MODULE_DESCRIPTION("Freescale i.MX AHCI SATA platform driver");
 MODULE_AUTHOR("Richard Zhu <Hong-Xing.Zhu@freescale.com>");
 MODULE_LICENSE("GPL");
-MODULE_ALIAS("ahci:imx");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/drivers/ata/ahci_qoriq.c b/drivers/ata/ahci_qoriq.c
index 6cd61842ad48..9cf9bf36a874 100644
--- a/drivers/ata/ahci_qoriq.c
+++ b/drivers/ata/ahci_qoriq.c
@@ -280,7 +280,7 @@ static int ahci_qoriq_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	if (of_id)
-		qoriq_priv->type = (enum ahci_qoriq_type)of_id->data;
+		qoriq_priv->type = (unsigned long)of_id->data;
 	else
 		qoriq_priv->type = (enum ahci_qoriq_type)acpi_id->driver_data;
 
diff --git a/drivers/ata/ahci_st.c b/drivers/ata/ahci_st.c
index 5a2cac60a29a..8607b68eee53 100644
--- a/drivers/ata/ahci_st.c
+++ b/drivers/ata/ahci_st.c
@@ -236,7 +236,7 @@ static struct platform_driver st_ahci_driver = {
 	.driver = {
 		.name = DRV_NAME,
 		.pm = &st_ahci_pm_ops,
-		.of_match_table = of_match_ptr(st_ahci_match),
+		.of_match_table = st_ahci_match,
 	},
 	.probe = st_ahci_probe,
 	.remove = ata_platform_remove_one,
diff --git a/drivers/ata/ahci_xgene.c b/drivers/ata/ahci_xgene.c
index 7bb5db17f864..1e08704d5117 100644
--- a/drivers/ata/ahci_xgene.c
+++ b/drivers/ata/ahci_xgene.c
@@ -785,7 +785,7 @@ static int xgene_ahci_probe(struct platform_device *pdev)
 	of_devid = of_match_device(xgene_ahci_of_match, dev);
 	if (of_devid) {
 		if (of_devid->data)
-			version = (enum xgene_ahci_version) of_devid->data;
+			version = (unsigned long) of_devid->data;
 	}
 #ifdef CONFIG_ACPI
 	else {
diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c
index 590ebea99601..0195eb29f6c2 100644
--- a/drivers/ata/sata_rcar.c
+++ b/drivers/ata/sata_rcar.c
@@ -875,7 +875,7 @@ static int sata_rcar_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	priv->type = (enum sata_rcar_type)of_device_get_match_data(dev);
+	priv->type = (unsigned long)of_device_get_match_data(dev);
 
 	pm_runtime_enable(dev);
 	ret = pm_runtime_get_sync(dev);