xenfb: eliminate the update_wanted field.

Signed-off-by: Akio Takebe <takebe_akio@jp.fujitsu.com>

diff --git a/drivers/xen/fbfront/xenfb.c b/drivers/xen/fbfront/xenfb.c
index a9e4cfcde42e2461a1e1397861d0d808eb14a717..53b080fc14126e461e1575ec9c9b48ad9fb49840 100644 (file)
--- a/drivers/xen/fbfront/xenfb.c
+++ b/drivers/xen/fbfront/xenfb.c
@@ -61,7 +61,6 @@ struct xenfb_info
        int                     irq;
        struct xenfb_page       *page;
        unsigned long           *mfns;
-       int                     update_wanted; /* XENFB_TYPE_UPDATE wanted */
        int                     feature_resize; /* Backend has resize feature */
        struct xenfb_resize     resize;
        int                     resize_dpy;
@@ -208,8 +207,6 @@ static void xenfb_update_screen(struct xenfb_info *info)
        int y1, y2, x1, x2;
        struct xenfb_mapping *map;
 
-       if (!info->update_wanted)
-               return;
        if (xenfb_queue_full(info))
                return;
 
@@ -823,22 +820,24 @@ static void xenfb_backend_changed(struct xenbus_device *dev,
                if (dev->state != XenbusStateConnected)
                        goto InitWait; /* no InitWait seen yet, fudge it */
 
-               if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
-                                "request-update", "%d", &val) < 0)
-                       val = 0;
-               if (val)
-                       info->update_wanted = 1;
 
                if (xenbus_scanf(XBT_NIL, dev->otherend,
                                        "feature-resize", "%d", &val) < 0)
                        val = 0;
                info->feature_resize = val;
 
-               info->kthread = kthread_run(xenfb_thread, info, "xenfb thread");
-               if (IS_ERR(info->kthread)) {
-                       info->kthread = NULL;
-                       xenbus_dev_fatal(dev, PTR_ERR(info->kthread),
-                                       "register_framebuffer");
+               if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
+                                "request-update", "%d", &val) < 0)
+                       val = 0;
+
+               if (val){
+                       info->kthread = kthread_run(xenfb_thread, info,
+                                                   "xenfb thread");
+                       if (IS_ERR(info->kthread)) {
+                               info->kthread = NULL;
+                               xenbus_dev_fatal(dev, PTR_ERR(info->kthread),
+                                               "register_framebuffer");
+                       }
                }
                break;