From 6adaed5bfe4f6f0a0e027e87d5dd80bd9834d5f0 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 23 Sep 2015 20:26:45 +0200 Subject: [PATCH] drm/radeon: Sprinkle drm_modeset_lock_all to appease locking checks In commit 7a3f3d6667f5f9ffd1517f6b21d64bbf5312042c Author: Daniel Vetter Date: Thu Jul 9 23:44:28 2015 +0200 drm: Check locking in drm_for_each_connector I added locking checks to drm_for_each_connector but failed that through drm_helper_connector_dpms -> drm_helper_choose_encoder_dpms it's used in a few more places in the radeon resume/suspend code. Fix them up. Note that we could use the connector iterator macros in there too, but that's for the future. Reported-and-tested-by: Borislav Petkov Cc: Borislav Petkov Cc: Alex Deucher Signed-off-by: Daniel Vetter Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/radeon_device.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index d8319dae8358..f3f562f6d848 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1573,10 +1573,12 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend, bool fbcon) drm_kms_helper_poll_disable(dev); + drm_modeset_lock_all(dev); /* turn off display hw */ list_for_each_entry(connector, &dev->mode_config.connector_list, head) { drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); } + drm_modeset_unlock_all(dev); /* unpin the front buffers and cursors */ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { @@ -1734,9 +1736,11 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon) if (fbcon) { drm_helper_resume_force_mode(dev); /* turn on display hw */ + drm_modeset_lock_all(dev); list_for_each_entry(connector, &dev->mode_config.connector_list, head) { drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); } + drm_modeset_unlock_all(dev); } drm_kms_helper_poll_enable(dev); -- 2.20.1