spapr: Split DRC release from DRC detach

spapr_drc_detach() is called when qemu generic code requests a device be
unplugged.  It makes a number of tests, which could well delay further
action until later, before actually detach the device from the DRC.

This splits out the part which actually removes the device from the DRC
into spapr_drc_release().  This will be useful for further cleanups.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>

diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c
index 21f5bf1421dbad82d65802d101dc4cbce0184ddf..8a2b8f5f659453b0e384d274b57ad9c26a38d2e6 100644 (file)
--- a/hw/ppc/spapr_drc.c
+++ b/hw/ppc/spapr_drc.c
@@ -315,29 +315,8 @@ void spapr_drc_attach(sPAPRDRConnector *drc, DeviceState *d, void *fdt,
                              NULL, 0, NULL);
 }
 
-void spapr_drc_detach(sPAPRDRConnector *drc, DeviceState *d, Error **errp)
+static void spapr_drc_release(sPAPRDRConnector *drc)
 {
-    trace_spapr_drc_detach(spapr_drc_index(drc));
-
-    if (drc->isolation_state != SPAPR_DR_ISOLATION_STATE_ISOLATED) {
-        trace_spapr_drc_awaiting_isolated(spapr_drc_index(drc));
-        drc->awaiting_release = true;
-        return;
-    }
-
-    if (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI &&
-        drc->allocation_state != SPAPR_DR_ALLOCATION_STATE_UNUSABLE) {
-        trace_spapr_drc_awaiting_unusable(spapr_drc_index(drc));
-        drc->awaiting_release = true;
-        return;
-    }
-
-    if (drc->awaiting_allocation) {
-        drc->awaiting_release = true;
-        trace_spapr_drc_awaiting_allocation(spapr_drc_index(drc));
-        return;
-    }
-
     drc->dr_indicator = SPAPR_DR_INDICATOR_INACTIVE;
 
     /* Calling release callbacks based on spapr_drc_type(drc). */
@@ -365,6 +344,32 @@ void spapr_drc_detach(sPAPRDRConnector *drc, DeviceState *d, Error **errp)
     drc->dev = NULL;
 }
 
+void spapr_drc_detach(sPAPRDRConnector *drc, DeviceState *d, Error **errp)
+{
+    trace_spapr_drc_detach(spapr_drc_index(drc));
+
+    if (drc->isolation_state != SPAPR_DR_ISOLATION_STATE_ISOLATED) {
+        trace_spapr_drc_awaiting_isolated(spapr_drc_index(drc));
+        drc->awaiting_release = true;
+        return;
+    }
+
+    if (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI &&
+        drc->allocation_state != SPAPR_DR_ALLOCATION_STATE_UNUSABLE) {
+        trace_spapr_drc_awaiting_unusable(spapr_drc_index(drc));
+        drc->awaiting_release = true;
+        return;
+    }
+
+    if (drc->awaiting_allocation) {
+        drc->awaiting_release = true;
+        trace_spapr_drc_awaiting_allocation(spapr_drc_index(drc));
+        return;
+    }
+
+    spapr_drc_release(drc);
+}
+
 static bool release_pending(sPAPRDRConnector *drc)
 {
     return drc->awaiting_release;