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>

diff --git a/drivers/video/sh_mobile_hdmi.c b/drivers/video/sh_mobile_hdmi.c
index 55b3077..d7df103 100644 (file)
--- 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: