[PATCH 07/18] fbcon: Avoid illegal display panning

[PATCH 07/18] fbcon: Avoid illegal display panning

[Antonino A. Daplas]

Avoid calls to fb_pan_display when driver is suspended or not
in text mode.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
---

 drivers/video/console/fbcon.c |   25 +++++++++++++++++++------
 1 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 9678045..d089209 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -2136,8 +2136,12 @@ static int fbcon_switch(struct vc_data *
 
 	scrollback_max = 0;
 	scrollback_current = 0;
-	ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
-	ops->update_start(info);
+
+	if (!fbcon_is_inactive(vc, info)) {
+	    ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
+	    ops->update_start(info);
+	}
+
 	fbcon_set_palette(vc, color_table); 	
 	fbcon_clear_margins(vc, 0);
 
@@ -2736,8 +2740,12 @@ static void fbcon_modechanged(struct fb_
 		updatescrollmode(p, info, vc);
 		scrollback_max = 0;
 		scrollback_current = 0;
-		ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
-		ops->update_start(info);
+		
+		if (!fbcon_is_inactive(vc, info)) {
+		    ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
+		    ops->update_start(info);
+		}
+
 		fbcon_set_palette(vc, color_table);
 		update_screen(vc);
 		if (softback_buf)
@@ -2774,8 +2782,13 @@ static void fbcon_set_all_vcs(struct fb_
 			updatescrollmode(p, info, vc);
 			scrollback_max = 0;
 			scrollback_current = 0;
-			ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
-			ops->update_start(info);
+
+			if (!fbcon_is_inactive(vc, info)) {
+			    ops->var.xoffset = ops->var.yoffset =
+				p->yscroll = 0;
+			    ops->update_start(info);
+			}
+
 			fbcon_set_palette(vc, color_table);
 			update_screen(vc);
 			if (softback_buf)




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