Since we know that locking is broken in that case and it's more important to not flood the dmesg with random gunk.
Cc: Dave Airlie <airlied at gmail.com> Cc: Borislav Petkov <bp at alien8.de> References: https://groups.google.com/forum/?fromgroups=#!topic/linux.kernel/QFzFxSUeV4I Cc: stable at vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/drm_crtc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 792c3e3..3be0802 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -78,6 +78,10 @@ void drm_warn_on_modeset_not_all_locked(struct drm_device *dev) { struct drm_crtc *crtc; + /* Locking is currently fubar in the panic handler. */ + if (oops_in_progress) + return; + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) WARN_ON(!mutex_is_locked(&crtc->mutex)); -- 1.7.10.4
