1 files changed, 50 insertions, 27 deletions

diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 70b77e0899a8..865a552c91e6 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -118,8 +118,8 @@ static void ata_acpi_associate_ide_port(struct ata_port *ap)
                 ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
 }
 
-static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
-                                    u32 event)
+static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device 
+                                    *dev, u32 event)
 {
         char event_string[12];
         char *envp[] = { event_string, NULL };
@@ -127,39 +127,67 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
         struct kobject *kobj = NULL;
         int wait = 0;
         unsigned long flags;
-
+        acpi_handle handle, tmphandle;
+        unsigned long sta;
+        acpi_status status;
+        
         if (!ap)
                 ap = dev->link->ap;
         ehi = &ap->link.eh_info;
 
         spin_lock_irqsave(ap->lock, flags);
 
+        if (dev)
+                handle = dev->acpi_handle;
+        else
+                handle = ap->acpi_handle;
+
+        status = acpi_get_handle(handle, "_EJ0", &tmphandle);
+        if (ACPI_FAILURE(status)) {
+                /* This device is not ejectable */
+                spin_unlock_irqrestore(ap->lock, flags);
+                return;
+        }
+
+        status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
+        if (ACPI_FAILURE(status)) {
+                printk ("Unable to determine bay status\n");
+                spin_unlock_irqrestore(ap->lock, flags);
+                return;
+        }
+
         switch (event) {
         case ACPI_NOTIFY_BUS_CHECK:
         case ACPI_NOTIFY_DEVICE_CHECK:
                 ata_ehi_push_desc(ehi, "ACPI event");
-                ata_ehi_hotplugged(ehi);
-                ata_port_freeze(ap);
-                break;
-
-        case ACPI_NOTIFY_EJECT_REQUEST:
-                ata_ehi_push_desc(ehi, "ACPI event");
-                if (dev)
-                        dev->flags |= ATA_DFLAG_DETACH;
-                else {
-                        struct ata_link *tlink;
-                        struct ata_device *tdev;
-
-                        ata_port_for_each_link(tlink, ap)
-                                ata_link_for_each_dev(tdev, tlink)
-                                        tdev->flags |= ATA_DFLAG_DETACH;
+                if (!sta) {
+                /* Device has been unplugged */
+                        if (dev)
+                                dev->flags |= ATA_DFLAG_DETACH;
+                        else {
+                                struct ata_link *tlink;
+                                struct ata_device *tdev;
+                                
+                                ata_port_for_each_link(tlink, ap) {
+                                        ata_link_for_each_dev(tdev, tlink) {
+                                                tdev->flags |= 
+                                                        ATA_DFLAG_DETACH;
+                                        }
+                                }
+                        }
+                        ata_port_schedule_eh(ap);
+                        wait = 1;
+                } else {
+                        ata_ehi_hotplugged(ehi);
+                        ata_port_freeze(ap);
                 }
-
-                ata_port_schedule_eh(ap);
-                wait = 1;
-                break;
         }
 
+        spin_unlock_irqrestore(ap->lock, flags);
+
+        if (wait)
+                ata_port_wait_eh(ap);
+
         if (dev) {
                 if (dev->sdev)
                         kobj = &dev->sdev->sdev_gendev.kobj;
@@ -170,11 +198,6 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
                 sprintf(event_string, "BAY_EVENT=%d", event);
                 kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
         }
-
-        spin_unlock_irqrestore(ap->lock, flags);
-
-        if (wait)
-                ata_port_wait_eh(ap);
 }
 
 static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data)