X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fxen%2Fblktap%2Finterface.c;fp=drivers%2Fxen%2Fblktap%2Finterface.c;h=b0eccf4225747f3607677b75a44268b07ab62737;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=19e0eda0a0438f52b571e0e7ffc4c6f13337045d;hpb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;p=linux-2.6.git

diff --git a/drivers/xen/blktap/interface.c b/drivers/xen/blktap/interface.c
index 19e0eda0a..b0eccf422 100644
--- a/drivers/xen/blktap/interface.c
+++ b/drivers/xen/blktap/interface.c
@@ -135,20 +135,25 @@ int tap_blkif_map(blkif_t *blkif, unsigned long shared_page,
 	return 0;
 }
 
-void tap_blkif_free(blkif_t *blkif)
+void tap_blkif_unmap(blkif_t *blkif)
 {
-	atomic_dec(&blkif->refcnt);
-	wait_event(blkif->waiting_to_free, atomic_read(&blkif->refcnt) == 0);
-
-	/* Already disconnected? */
-	if (blkif->irq)
+	if (blkif->irq) {
 		unbind_from_irqhandler(blkif->irq, blkif);
-
+		blkif->irq = 0;
+	}
 	if (blkif->blk_ring.sring) {
 		unmap_frontend_page(blkif);
 		free_vm_area(blkif->blk_ring_area);
+		blkif->blk_ring.sring = NULL;
 	}
+}
+
+void tap_blkif_free(blkif_t *blkif)
+{
+	atomic_dec(&blkif->refcnt);
+	wait_event(blkif->waiting_to_free, atomic_read(&blkif->refcnt) == 0);
 
+	tap_blkif_unmap(blkif);
 	kmem_cache_free(blkif_cachep, blkif);
 }