Message ID | 20190524085354.27411-2-daniel.vetter@ffwll.ch (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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fbcon notifier begone!
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diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c index 45ad925ad5f8..2352b4c37826 100644 --- a/drivers/video/console/dummycon.c +++ b/drivers/video/console/dummycon.c @@ -33,6 +33,8 @@ static bool dummycon_putc_called; void dummycon_register_output_notifier(struct notifier_block *nb) { + WARN_CONSOLE_UNLOCKED(); + raw_notifier_chain_register(&dummycon_output_nh, nb); if (dummycon_putc_called) @@ -41,11 +43,15 @@ void dummycon_register_output_notifier(struct notifier_block *nb) void dummycon_unregister_output_notifier(struct notifier_block *nb) { + WARN_CONSOLE_UNLOCKED(); + raw_notifier_chain_unregister(&dummycon_output_nh, nb); } static void dummycon_putc(struct vc_data *vc, int c, int ypos, int xpos) { + WARN_CONSOLE_UNLOCKED(); + dummycon_putc_called = true; raw_notifier_call_chain(&dummycon_output_nh, 0, NULL); }
As part of trying to understand the locking (or lack thereof) in the fbcon/vt/fbdev maze, annotate everything. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Kees Cook <keescook@chromium.org> Cc: Nicolas Pitre <nicolas.pitre@linaro.org> --- drivers/video/console/dummycon.c | 6 ++++++ 1 file changed, 6 insertions(+)