mode_config should be locked when calling drm_helper_resume_force_mode. This patch adds the lock, similar to #927a2f119.
Cc: stable@kernel.org Signed-off-by: Peter Huewe peterhuewe@gmx.de --- drivers/gpu/drm/nouveau/nouveau_drv.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c index 4f2030b..6260abe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.c +++ b/drivers/gpu/drm/nouveau/nouveau_drv.c @@ -375,7 +375,9 @@ nouveau_pci_resume(struct pci_dev *pdev) nv_crtc->lut.depth = 0; }
+ mutex_lock(&dev->mode_config.mutex); drm_helper_resume_force_mode(dev); + mutex_unlock(&dev->mode_config.mutex);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);