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drm/nouveau: 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 <hdegoede@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Hans de Goede 2016-11-21 17:50:55 +01:00 committed by Ben Skeggs
parent 81280d0e24
commit 0b2fe6594f
1 changed files with 10 additions and 1 deletions
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11
drivers/gpu/drm/nouveau/nouveau_drm.c
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@ -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;
}