linux-kernel - [PATCH 02/33] fbdev: locking check for fb_set

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Date:   Fri, 24 May 2019 10:53:23 +0200
From:   Daniel Vetter <daniel.vetter@...ll.ch>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Peter Rosin <peda@...ntia.se>,
        Hans de Goede <hdegoede@...hat.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Manfred Schlaegl <manfred.schlaegl@...zinger.com>,
        Mikulas Patocka <mpatocka@...hat.com>,
        Kees Cook <keescook@...omium.org>
Subject: [PATCH 02/33] fbdev: locking check for fb_set_suspend

Just drive-by, nothing systematic yet.

Signed-off-by: Daniel Vetter <daniel.vetter@...el.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc: Daniel Vetter <daniel.vetter@...ll.ch>
Cc: "Michał Mirosław" <mirq-linux@...e.qmqm.pl>
Cc: Peter Rosin <peda@...ntia.se>
Cc: Hans de Goede <hdegoede@...hat.com>
Cc: Thomas Zimmermann <tzimmermann@...e.de>
Cc: Manfred Schlaegl <manfred.schlaegl@...zinger.com>
Cc: Mikulas Patocka <mpatocka@...hat.com>
Cc: Kees Cook <keescook@...omium.org>
---
 drivers/video/fbdev/core/fbmem.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index d1949c92be98..8ba674ffb3c9 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1985,6 +1985,8 @@ void fb_set_suspend(struct fb_info *info, int state)
 {
 	struct fb_event event;
 
+	WARN_CONSOLE_UNLOCKED();
+
 	event.info = info;
 	if (state) {
 		fb_notifier_call_chain(FB_EVENT_SUSPEND, &event);
-- 
2.20.1