Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
drm/nouveau: fix oops on runtime suspend/resume
if we have no crtcs we need to not call the display resume code.
Reported-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
authored by Dave Airlie and committed by Dave Airlie 01172772 48016851
+6
-3
drivers/gpu/drm/nouveau/nouveau_drm.c
+6
-3
drivers/gpu/drm/nouveau/nouveau_drm.c
···
636
636
nouveau_fbcon_set_suspend(drm_dev, 0);
637
637
638
638
nouveau_fbcon_zfill_all(drm_dev);
639
-
nouveau_display_resume(drm_dev);
639
+
if (drm_dev->mode_config.num_crtc)
640
+
nouveau_display_resume(drm_dev);
640
641
nv_suspend_set_printk_level(NV_DBG_DEBUG);
641
642
return 0;
642
643
}
···
672
671
if (drm_dev->mode_config.num_crtc)
673
672
nouveau_fbcon_set_suspend(drm_dev, 0);
674
673
nouveau_fbcon_zfill_all(drm_dev);
675
-
nouveau_display_resume(drm_dev);
674
+
if (drm_dev->mode_config.num_crtc)
675
+
nouveau_display_resume(drm_dev);
676
676
nv_suspend_set_printk_level(NV_DBG_DEBUG);
677
677
return 0;
678
678
}
···
908
906
pci_set_master(pdev);
909
907
910
908
ret = nouveau_do_resume(drm_dev);
911
-
nouveau_display_resume(drm_dev);
909
+
if (drm_dev->mode_config.num_crtc)
910
+
nouveau_display_resume(drm_dev);
912
911
drm_kms_helper_poll_enable(drm_dev);
913
912
/* do magic */
914
913
nv_mask(device, 0x88488, (1 << 25), (1 << 25));