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As it turns out, on cards that actually have CRTCs on them we're already calling drm_kms_helper_poll_enable(drm_dev) from nouveau_display_resume() before we call it in nouveau_pmops_runtime_resume(). This leads us to accidentally trying to enable polling twice, which results in a potential deadlock between the RPM locks and drm_dev->mode_config.mutex if we end up trying to enable polling

...at redhat.com> --- drivers/gpu/drm/nouveau/nouveau_drv.h | 2 ++ drivers/gpu/drm/nouveau/nouveau_fbcon.c | 43 ++++++++++++++++++++++++++------- 2 files changed, 36 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h index 8d5ed5b..42c1fa5 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.h +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h @@ -165,6 +165,8 @@ struct nouveau_drm { struct backlight_device *backlight; struct list_head bl_connectors; struct work_struct hpd_work; + struct work_struct fbcon_work; + int fbcon_new_st...

...2,6 +1133,7 @@ nouveau_drm_exit(void) return; drm_pci_exit(&driver_pci, &nouveau_drm_pci_driver); + nouveau_backlight_dtor(); nouveau_unregister_dsm_handler(); #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER diff --git a/drm/nouveau/nouveau_drv.h b/drm/nouveau/nouveau_drv.h index 9730c0e..8d5ed5b 100644 --- a/drm/nouveau/nouveau_drv.h +++ b/drm/nouveau/nouveau_drv.h @@ -163,6 +163,7 @@ struct nouveau_drm { struct nvbios vbios; struct nouveau_display *display; struct backlight_device *backlight; + struct list_head bl_connectors; struct work_struct hpd_work; #ifdef CONFIG_ACPI stru...

Currently, every backlight interface created by Nouveau uses the same name, nv_backlight. This leads to a sysfs warning as it tries to create an already existing folder. This patch adds a incremented number to the name, but keeps the initial name as nv_backlight, to avoid possibly breaking userspace; the second interface will be named nv_backlight1, and so on. Fixes: fdo#86539 Signed-off-by: