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drm/helper: lock all around force mode restore

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Since Daniel documented things with a sledge hammer, we got lots of
nice backtraces in suspend/resume operations, I've check the callers
of this and they all seems safe to me,

This fixes one set of warns I reported.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2014-03-21 10:45:40 +10:00
parent 53f1904bce
commit 3ea8785503
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/drm_crtc_helper.c
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@ -983,6 +983,7 @@ void drm_helper_resume_force_mode(struct drm_device *dev)
int encoder_dpms;
bool ret;
drm_modeset_lock_all(dev);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (!crtc->enabled)
@ -1017,6 +1018,7 @@ void drm_helper_resume_force_mode(struct drm_device *dev)
/* disable the unused connectors while restoring the modesetting */
__drm_helper_disable_unused_functions(dev);
drm_modeset_unlock_all(dev);
}
EXPORT_SYMBOL(drm_helper_resume_force_mode);