5 files changed, 42 insertions, 7 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 1cf6ab39e220..5064f3ea20f1 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -311,6 +311,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 
 	/* AMD */
 	{ PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */
+	{ PCI_VDEVICE(AMD, 0x7900), board_ahci }, /* AMD CZ */
 	/* AMD is using RAID class only for ahci controllers */
 	{ PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
 	  PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci },
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 87f2f395d79a..cf4e7020adac 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -156,8 +156,10 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
 
 	spin_unlock_irqrestore(ap->lock, flags);
 
-	if (wait)
+	if (wait) {
 		ata_port_wait_eh(ap);
+		flush_work(&ap->hotplug_task.work);
+	}
 }
 
 static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data)
@@ -214,6 +216,39 @@ static const struct acpi_dock_ops ata_acpi_ap_dock_ops = {
 	.uevent = ata_acpi_ap_uevent,
 };
 
+void ata_acpi_hotplug_init(struct ata_host *host)
+{
+	int i;
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+		acpi_handle handle;
+		struct ata_device *dev;
+
+		if (!ap)
+			continue;
+
+		handle = ata_ap_acpi_handle(ap);
+		if (handle) {
+			/* we might be on a docking station */
+			register_hotplug_dock_device(handle,
+						     &ata_acpi_ap_dock_ops, ap,
+						     NULL, NULL);
+		}
+
+		ata_for_each_dev(dev, &ap->link, ALL) {
+			handle = ata_dev_acpi_handle(dev);
+			if (!handle)
+				continue;
+
+			/* we might be on a docking station */
+			register_hotplug_dock_device(handle,
+						     &ata_acpi_dev_dock_ops,
+						     dev, NULL, NULL);
+		}
+	}
+}
+
 /**
  * ata_acpi_dissociate - dissociate ATA host from ACPI objects
  * @host: target ATA host
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 9c3c99a995d3..c24354d44f3d 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5436,7 +5436,7 @@ static int ata_port_runtime_idle(struct device *dev)
 				return -EBUSY;
 	}
 
-	return pm_runtime_suspend(dev);
+	return 0;
 }
 
 static int ata_port_runtime_suspend(struct device *dev)
@@ -6150,6 +6150,8 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
 	if (rc)
 		goto err_tadd;
 
+	ata_acpi_hotplug_init(host);
+
 	/* set cable, sata_spd_limit and report */
 	for (i = 0; i < host->n_ports; i++) {
 		struct ata_port *ap = host->ports[i];
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index c949dd311b2e..577d902bc4de 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -122,6 +122,7 @@ extern int ata_acpi_register(void);
 extern void ata_acpi_unregister(void);
 extern void ata_acpi_bind(struct ata_device *dev);
 extern void ata_acpi_unbind(struct ata_device *dev);
+extern void ata_acpi_hotplug_init(struct ata_host *host);
 #else
 static inline void ata_acpi_dissociate(struct ata_host *host) { }
 static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
@@ -134,6 +135,7 @@ static inline int ata_acpi_register(void) { return 0; }
 static inline void ata_acpi_unregister(void) { }
 static inline void ata_acpi_bind(struct ata_device *dev) { }
 static inline void ata_acpi_unbind(struct ata_device *dev) { }
+static inline void ata_acpi_hotplug_init(struct ata_host *host) {}
 #endif
 
 /* libata-scsi.c */
diff --git a/drivers/ata/pata_ep93xx.c b/drivers/ata/pata_ep93xx.c
index c1bfaf43d109..980b88e109fc 100644
--- a/drivers/ata/pata_ep93xx.c
+++ b/drivers/ata/pata_ep93xx.c
@@ -933,11 +933,6 @@ static int ep93xx_pata_probe(struct platform_device *pdev)
 	}
 
 	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem_res) {
-		err = -ENXIO;
-		goto err_rel_gpio;
-	}
-
 	ide_base = devm_ioremap_resource(&pdev->dev, mem_res);
 	if (IS_ERR(ide_base)) {
 		err = PTR_ERR(ide_base);