From: Sergei Antonov <saproj@gmail.com>
Date: Sun, 11 May 2014 22:30:48 +0000 (+0200)
Subject: drm/crtc-helper: skip locking checks in panicking path
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~104^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba6f582606655754d9dfbfc9dffe75dcf806f1dd;p=pandora-kernel.git

drm/crtc-helper: skip locking checks in panicking path

Skip locking checks in drm_helper_*_in_use() if they are called in panicking
path. See similar code in drm_warn_on_modeset_not_all_locked().

After panic information has been output, these WARN_ONs go off outputing a lot
of lines and scrolling the panic information out of the screen. Here is a
partial call trace showing how execution reaches them:

? drm_helper_crtc_in_use()
? __drm_helper_disable_unused_functions()
? several *_set_config functions
? drm_fb_helper_restore_fbdev_mode()

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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