From: Erik Gilling <konkers@android.com>
Date: Fri, 5 Nov 2010 22:30:35 +0000 (-0700)
Subject: video: tegra: fix crash when no HDMI modes are supported
X-Git-Tag: firefly_0821_release~9833^2~117^2~7
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f1ec3093e5ef4f60878214b820150b2c13cd7b27;p=firefly-linux-kernel-4.4.55.git

video: tegra: fix crash when no HDMI modes are supported

Change-Id: I2e23d018d5acb814e7a088921c26c8f305790442
Signed-off-by: Erik Gilling <konkers@android.com>
---

diff --git a/drivers/video/tegra/fb.c b/drivers/video/tegra/fb.c
index a4f38c4f15f0..6992e1c06ddf 100644
--- a/drivers/video/tegra/fb.c
+++ b/drivers/video/tegra/fb.c
@@ -604,15 +604,21 @@ void tegra_fb_update_monspecs(struct tegra_fb_info *fb_info,
 		}
 	}
 
-	/* in case the first mode was not matched */
-	m = list_first_entry(&fb_info->info->modelist, struct fb_modelist, list);
-	m->mode.flag |= FB_MODE_IS_FIRST;
-
-	fb_info->info->mode = (struct fb_videomode *)
-		fb_find_best_display(specs, &fb_info->info->modelist);
-
-	fb_videomode_to_var(&fb_info->info->var, fb_info->info->mode);
-	tegra_fb_set_par(fb_info->info);
+	if (list_empty(&fb_info->info->modelist)) {
+		struct tegra_dc_mode mode;
+		memset(&fb_info->info->var, 0x0, sizeof(fb_info->info->var));
+		memset(&mode, 0x0, sizeof(mode));
+		tegra_dc_set_mode(fb_info->win->dc, &mode);
+	} else {
+		/* in case the first mode was not matched */
+		m = list_first_entry(&fb_info->info->modelist, struct fb_modelist, list);
+		m->mode.flag |= FB_MODE_IS_FIRST;
+		fb_info->info->mode = (struct fb_videomode *)
+			fb_find_best_display(specs, &fb_info->info->modelist);
+
+		fb_videomode_to_var(&fb_info->info->var, fb_info->info->mode);
+		tegra_fb_set_par(fb_info->info);
+	}
 
 	event.info = fb_info->info;
 	fb_notifier_call_chain(FB_EVENT_NEW_MODELIST, &event);