From 89f304abbe592bf1d97ac0bbc0d611c7c021d93d Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 21 Nov 2016 17:50:55 +0100 Subject: drm: Queue hpd_work on (runtime) resume We need to call drm_helper_hpd_irq_event() on resume to properly detect monitor connection / disconnection on some laptops, use hpd_work for this to avoid deadlocks. Signed-off-by: Hans de Goede Signed-off-by: Ben Skeggs --- drm/nouveau/nouveau_drm.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'drm') diff --git a/drm/nouveau/nouveau_drm.c b/drm/nouveau/nouveau_drm.c index 9876e6fcf..064a925ed 100644 --- a/drm/nouveau/nouveau_drm.c +++ b/drm/nouveau/nouveau_drm.c @@ -699,7 +699,12 @@ nouveau_pmops_resume(struct device *dev) return ret; pci_set_master(pdev); - return nouveau_do_resume(drm_dev, false); + ret = nouveau_do_resume(drm_dev, false); + + /* Monitors may have been connected / disconnected during suspend */ + schedule_work(&nouveau_drm(drm_dev)->hpd_work); + + return ret; } static int @@ -773,6 +778,10 @@ nouveau_pmops_runtime_resume(struct device *dev) nvif_mask(&device->object, 0x088488, (1 << 25), (1 << 25)); vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_ON); drm_dev->switch_power_state = DRM_SWITCH_POWER_ON; + + /* Monitors may have been connected / disconnected during suspend */ + schedule_work(&nouveau_drm(drm_dev)->hpd_work); + return ret; } -- cgit v1.2.1