fbdev: sh_mobile_hdmi: properly clean up modedb on monitor unplug

Even though this is not a problem currently, it is better to clear the freed
pointer and nullify the length of the freed memory.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/video/sh_mobile_hdmi.c b/drivers/video/sh_mobile_hdmi.c
index 55b3077ff6ff..d7df10315d8d 100644
--- a/drivers/video/sh_mobile_hdmi.c
+++ b/drivers/video/sh_mobile_hdmi.c
@@ -1071,6 +1071,10 @@ static void sh_hdmi_edid_work_fn(struct work_struct *work)
                 if (!hdmi->info)
                         goto out;
 
+                hdmi->monspec.modedb_len = 0;
+                fb_destroy_modedb(hdmi->monspec.modedb);
+                hdmi->monspec.modedb = NULL;
+
                 acquire_console_sem();
 
                 /* HDMI disconnect */
@@ -1078,7 +1082,6 @@ static void sh_hdmi_edid_work_fn(struct work_struct *work)
 
                 release_console_sem();
                 pm_runtime_put(hdmi->dev);
-                fb_destroy_modedb(hdmi->monspec.modedb);
         }
 
 out: