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Diffstat (limited to 'tags/2.6.21-2/20960_linux-2.6-xen-blkfront-wait-add.patch')
-rw-r--r--tags/2.6.21-2/20960_linux-2.6-xen-blkfront-wait-add.patch82
1 files changed, 82 insertions, 0 deletions
diff --git a/tags/2.6.21-2/20960_linux-2.6-xen-blkfront-wait-add.patch b/tags/2.6.21-2/20960_linux-2.6-xen-blkfront-wait-add.patch
new file mode 100644
index 0000000..d372df7
--- /dev/null
+++ b/tags/2.6.21-2/20960_linux-2.6-xen-blkfront-wait-add.patch
@@ -0,0 +1,82 @@
+Index: patching/drivers/xen/blkfront/blkfront.c
+===================================================================
+--- patching.orig/drivers/xen/blkfront/blkfront.c
++++ patching/drivers/xen/blkfront/blkfront.c
+@@ -354,6 +354,8 @@ static void connect(struct blkfront_info
+ spin_unlock_irq(&blkif_io_lock);
+
+ add_disk(info->gd);
++
++ info->is_ready = 1;
+ }
+
+ /**
+@@ -863,6 +865,13 @@ static void blkif_recover(struct blkfron
+ spin_unlock_irq(&blkif_io_lock);
+ }
+
++int blkfront_is_ready(struct xenbus_device *dev)
++{
++ struct blkfront_info *info = dev->dev.driver_data;
++
++ return info->is_ready;
++}
++
+
+ /* ** Driver Registration ** */
+
+@@ -881,6 +890,7 @@ static struct xenbus_driver blkfront = {
+ .remove = blkfront_remove,
+ .resume = blkfront_resume,
+ .otherend_changed = backend_changed,
++ .is_ready = blkfront_is_ready,
+ };
+
+
+Index: patching/drivers/xen/blkfront/block.h
+===================================================================
+--- patching.orig/drivers/xen/blkfront/block.h
++++ patching/drivers/xen/blkfront/block.h
+@@ -111,6 +111,7 @@ struct blkfront_info
+ struct blk_shadow shadow[BLK_RING_SIZE];
+ unsigned long shadow_free;
+ int feature_barrier;
++ int is_ready;
+
+ /**
+ * The number of people holding this device open. We won't allow a
+Index: patching/drivers/xen/xenbus/xenbus_probe.c
+===================================================================
+--- patching.orig/drivers/xen/xenbus/xenbus_probe.c
++++ patching/drivers/xen/xenbus/xenbus_probe.c
+@@ -995,6 +995,7 @@ static int is_disconnected_device(struct
+ {
+ struct xenbus_device *xendev = to_xenbus_device(dev);
+ struct device_driver *drv = data;
++ struct xenbus_driver *xendrv;
+
+ /*
+ * A device with no driver will never connect. We care only about
+@@ -1007,7 +1008,9 @@ static int is_disconnected_device(struct
+ if (drv && (dev->driver != drv))
+ return 0;
+
+- return (xendev->state != XenbusStateConnected);
++ xendrv = to_xenbus_driver(dev->driver);
++ return (xendev->state != XenbusStateConnected ||
++ (xendrv->is_ready && !xendrv->is_ready(xendev)));
+ }
+
+ static int exists_disconnected_device(struct device_driver *drv)
+Index: patching/include/xen/xenbus.h
+===================================================================
+--- patching.orig/include/xen/xenbus.h
++++ patching/include/xen/xenbus.h
+@@ -106,6 +106,7 @@ struct xenbus_driver {
+ int (*uevent)(struct xenbus_device *, char **, int, char *, int);
+ struct device_driver driver;
+ int (*read_otherend_details)(struct xenbus_device *dev);
++ int (*is_ready)(struct xenbus_device *dev);
+ };
+
+ static inline struct xenbus_driver *to_xenbus_driver(struct device_driver *drv)