diff --git a/hw/display/xenfb.c b/hw/display/xenfb.c
index 46b7d5e..eaa1fce 100644
--- a/hw/display/xenfb.c
+++ b/hw/display/xenfb.c
@@ -90,21 +90,22 @@
     xen_pfn_t mfn;
 
     if (xenstore_read_fe_uint64(&c->xendev, "page-ref", &val) == -1)
-	return -1;
+        return -1;
     mfn = (xen_pfn_t)val;
     assert(val == mfn);
 
     if (xenstore_read_fe_int(&c->xendev, "event-channel", &c->xendev.remote_port) == -1)
-	return -1;
+        return -1;
 
     c->page = xenforeignmemory_map(xen_fmem, c->xendev.dom,
                                    PROT_READ | PROT_WRITE, 1, &mfn, NULL);
     if (c->page == NULL)
-	return -1;
+        return -1;
 
     xen_be_bind_evtchn(&c->xendev);
-    xen_be_printf(&c->xendev, 1, "ring mfn %"PRI_xen_pfn", remote-port %d, local-port %d\n",
-		  mfn, c->xendev.remote_port, c->xendev.local_port);
+    xen_be_printf(&c->xendev, 1,
+                  "ring mfn %"PRI_xen_pfn", remote-port %d, local-port %d\n",
+                  mfn, c->xendev.remote_port, c->xendev.local_port);
 
     return 0;
 }
@@ -500,8 +501,8 @@
 }
 
 static int xenfb_configure_fb(struct XenFB *xenfb, size_t fb_len_lim,
-			      int width, int height, int depth,
-			      size_t fb_len, int offset, int row_stride)
+                              int width, int height, int depth,
+                              size_t fb_len, int offset, int row_stride)
 {
     size_t mfn_sz = sizeof(*((struct xenfb_page *)0)->pd);
     size_t pd_len = sizeof(((struct xenfb_page *)0)->pd) / mfn_sz;
@@ -510,40 +511,47 @@
     int max_width, max_height;
 
     if (fb_len_lim > fb_len_max) {
-	xen_be_printf(&xenfb->c.xendev, 0, "fb size limit %zu exceeds %zu, corrected\n",
-		      fb_len_lim, fb_len_max);
-	fb_len_lim = fb_len_max;
+        xen_be_printf(&xenfb->c.xendev, 0,
+                      "fb size limit %zu exceeds %zu, corrected\n",
+                      fb_len_lim, fb_len_max);
+        fb_len_lim = fb_len_max;
     }
     if (fb_len_lim && fb_len > fb_len_lim) {
-	xen_be_printf(&xenfb->c.xendev, 0, "frontend fb size %zu limited to %zu\n",
-		      fb_len, fb_len_lim);
-	fb_len = fb_len_lim;
+        xen_be_printf(&xenfb->c.xendev, 0,
+                      "frontend fb size %zu limited to %zu\n",
+                      fb_len, fb_len_lim);
+        fb_len = fb_len_lim;
     }
     if (depth != 8 && depth != 16 && depth != 24 && depth != 32) {
-	xen_be_printf(&xenfb->c.xendev, 0, "can't handle frontend fb depth %d\n",
-		      depth);
-	return -1;
+        xen_be_printf(&xenfb->c.xendev, 0,
+                      "can't handle frontend fb depth %d\n",
+                      depth);
+        return -1;
     }
     if (row_stride <= 0 || row_stride > fb_len) {
-	xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend stride %d\n", row_stride);
-	return -1;
+        xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend stride %d\n",
+                      row_stride);
+        return -1;
     }
     max_width = row_stride / (depth / 8);
     if (width < 0 || width > max_width) {
-	xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend width %d limited to %d\n",
-		      width, max_width);
-	width = max_width;
+        xen_be_printf(&xenfb->c.xendev, 0,
+                      "invalid frontend width %d limited to %d\n",
+                      width, max_width);
+        width = max_width;
     }
     if (offset < 0 || offset >= fb_len) {
-	xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend offset %d (max %zu)\n",
-		      offset, fb_len - 1);
-	return -1;
+        xen_be_printf(&xenfb->c.xendev, 0,
+                      "invalid frontend offset %d (max %zu)\n",
+                      offset, fb_len - 1);
+        return -1;
     }
     max_height = (fb_len - offset) / row_stride;
     if (height < 0 || height > max_height) {
-	xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend height %d limited to %d\n",
-		      height, max_height);
-	height = max_height;
+        xen_be_printf(&xenfb->c.xendev, 0,
+                      "invalid frontend height %d limited to %d\n",
+                      height, max_height);
+        height = max_height;
     }
     xenfb->fb_len = fb_len;
     xenfb->row_stride = row_stride;
@@ -554,7 +562,7 @@
     xenfb->up_fullscreen = 1;
     xenfb->do_resize = 1;
     xen_be_printf(&xenfb->c.xendev, 1, "framebuffer %dx%dx%d offset %d stride %d\n",
-		  width, height, depth, offset, row_stride);
+                  width, height, depth, offset, row_stride);
     return 0;
 }
 
@@ -696,9 +704,9 @@
         return;
 
     if (!xenfb->feature_update) {
-	/* we don't get update notifications, thus use the
-	 * sledge hammer approach ... */
-	xenfb->up_fullscreen = 1;
+        /* we don't get update notifications, thus use the
+         * sledge hammer approach ... */
+        xenfb->up_fullscreen = 1;
     }
 
     /* resize if needed */
@@ -729,18 +737,19 @@
 
     /* run queued updates */
     if (xenfb->up_fullscreen) {
-	xen_be_printf(&xenfb->c.xendev, 3, "update: fullscreen\n");
-	xenfb_guest_copy(xenfb, 0, 0, xenfb->width, xenfb->height);
+        xen_be_printf(&xenfb->c.xendev, 3, "update: fullscreen\n");
+        xenfb_guest_copy(xenfb, 0, 0, xenfb->width, xenfb->height);
     } else if (xenfb->up_count) {
-	xen_be_printf(&xenfb->c.xendev, 3, "update: %d rects\n", xenfb->up_count);
-	for (i = 0; i < xenfb->up_count; i++)
-	    xenfb_guest_copy(xenfb,
-			     xenfb->up_rects[i].x,
-			     xenfb->up_rects[i].y,
-			     xenfb->up_rects[i].w,
-			     xenfb->up_rects[i].h);
+        xen_be_printf(&xenfb->c.xendev, 3, "update: %d rects\n",
+                      xenfb->up_count);
+        for (i = 0; i < xenfb->up_count; i++)
+            xenfb_guest_copy(xenfb,
+                             xenfb->up_rects[i].x,
+                             xenfb->up_rects[i].y,
+                             xenfb->up_rects[i].w,
+                             xenfb->up_rects[i].h);
     } else {
-	xen_be_printf(&xenfb->c.xendev, 3, "update: nothing\n");
+        xen_be_printf(&xenfb->c.xendev, 3, "update: nothing\n");
     }
     xenfb->up_count = 0;
     xenfb->up_fullscreen = 0;