From 43553559121ca90965b572cf8a1d6d0fd618b449 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 5 Apr 2022 23:03:31 +0200 Subject: [PATCH] fbcon: Consistently protect deferred_takeover with console_lock() This shouldn't be a problem in practice since until we've actually taken over the console there's nothing we've registered with the console/vt subsystem, so the exit/unbind path that check this can't do the wrong thing. But it's confusing, so fix it by moving it a tad later. Acked-by: Sam Ravnborg Signed-off-by: Daniel Vetter Cc: Daniel Vetter Cc: Du Cheng Cc: Tetsuo Handa Cc: Claudio Suarez Cc: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20220405210335.3434130-14-daniel.vetter@ffwll.ch --- drivers/video/fbdev/core/fbcon.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index cc960bf499917..4f9752ee91897 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -3227,6 +3227,9 @@ static void fbcon_register_existing_fbs(struct work_struct *work) console_lock(); + deferred_takeover = false; + logo_shown = FBCON_LOGO_DONTSHOW; + for_each_registered_fb(i) fbcon_fb_registered(registered_fb[i]); @@ -3244,8 +3247,6 @@ static int fbcon_output_notifier(struct notifier_block *nb, pr_info("fbcon: Taking over console\n"); dummycon_unregister_output_notifier(&fbcon_output_nb); - deferred_takeover = false; - logo_shown = FBCON_LOGO_DONTSHOW; /* We may get called in atomic context */ schedule_work(&fbcon_deferred_takeover_work); -- GitLab