X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fblock%2Fxen-blkfront.c;h=f2fff5799ddf0fe1b41909b64d606d747f9081f7;hb=450c622e9ff19888818d4e2c4d31adb97a5242b2;hp=9c6f3f99208d073ad9cbfd3ff61e69a0e3dc0a02;hpb=98c1fc934c097d84dc30c639e9bdb0b992ef53e2;p=linux-2.6

diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 9c6f3f9920..f2fff5799d 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -47,6 +47,7 @@
 
 #include <xen/interface/grant_table.h>
 #include <xen/interface/io/blkif.h>
+#include <xen/interface/io/protocols.h>
 
 #include <asm/xen/hypervisor.h>
 
@@ -74,7 +75,6 @@ static struct block_device_operations xlvbd_block_fops;
 struct blkfront_info
 {
 	struct xenbus_device *xbdev;
-	dev_t dev;
 	struct gendisk *gd;
 	int vdevice;
 	blkif_vdev_t handle;
@@ -88,6 +88,7 @@ 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
@@ -136,7 +137,7 @@ static void blkif_restart_queue_callback(void *arg)
 	schedule_work(&info->work);
 }
 
-int blkif_getgeo(struct block_device *bd, struct hd_geometry *hg)
+static int blkif_getgeo(struct block_device *bd, struct hd_geometry *hg)
 {
 	/* We don't have real geometry info, but let's at least return
 	   values consistent with the size of the device */
@@ -614,6 +615,12 @@ again:
 		message = "writing event-channel";
 		goto abort_transaction;
 	}
+	err = xenbus_printf(xbt, dev->nodename, "protocol", "%s",
+			    XEN_IO_PROTO_ABI_NATIVE);
+	if (err) {
+		message = "writing protocol";
+		goto abort_transaction;
+	}
 
 	err = xenbus_transaction_end(xbt, 0);
 	if (err) {
@@ -833,6 +840,8 @@ static void blkfront_connect(struct blkfront_info *info)
 	spin_unlock_irq(&blkif_io_lock);
 
 	add_disk(info->gd);
+
+	info->is_ready = 1;
 }
 
 /**
@@ -896,7 +905,7 @@ static void backend_changed(struct xenbus_device *dev,
 		break;
 
 	case XenbusStateClosing:
-		bd = bdget(info->dev);
+		bd = bdget_disk(info->gd, 0);
 		if (bd == NULL)
 			xenbus_dev_fatal(dev, -ENODEV, "bdget failed");
 
@@ -925,6 +934,13 @@ static int blkfront_remove(struct xenbus_device *dev)
 	return 0;
 }
 
+static int blkfront_is_ready(struct xenbus_device *dev)
+{
+	struct blkfront_info *info = dev->dev.driver_data;
+
+	return info->is_ready;
+}
+
 static int blkif_open(struct inode *inode, struct file *filep)
 {
 	struct blkfront_info *info = inode->i_bdev->bd_disk->private_data;
@@ -971,6 +987,7 @@ static struct xenbus_driver blkfront = {
 	.remove = blkfront_remove,
 	.resume = blkfront_resume,
 	.otherend_changed = backend_changed,
+	.is_ready = blkfront_is_ready,
 };
 
 static int __init xlblk_init(void)
@@ -998,3 +1015,5 @@ module_exit(xlblk_exit);
 MODULE_DESCRIPTION("Xen virtual block device frontend");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_BLOCKDEV_MAJOR(XENVBD_MAJOR);
+MODULE_ALIAS("xen:vbd");
+MODULE_ALIAS("xenblk");