diff options
| -rw-r--r-- | drivers/gpu/drm/drm_irq.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index 1e787f894b3..e2f5d239d16 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -259,7 +259,8 @@ EXPORT_SYMBOL(drm_irq_install); */ int drm_irq_uninstall(struct drm_device * dev) { - int irq_enabled; + unsigned long irqflags; + int irq_enabled, i; if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) return -EINVAL; @@ -269,6 +270,16 @@ int drm_irq_uninstall(struct drm_device * dev) dev->irq_enabled = 0; mutex_unlock(&dev->struct_mutex); + /* + * Wake up any waiters so they don't hang. + */ + spin_lock_irqsave(&dev->vbl_lock, irqflags); + for (i = 0; i < dev->num_crtcs; i++) { + DRM_WAKEUP(&dev->vbl_queue[i]); + dev->vblank_enabled[i] = 0; + } + spin_unlock_irqrestore(&dev->vbl_lock, irqflags); + if (!irq_enabled) return -EINVAL; @@ -617,8 +628,9 @@ int drm_wait_vblank(struct drm_device *dev, void *data, DRM_DEBUG("waiting on vblank count %d, crtc %d\n", vblwait->request.sequence, crtc); DRM_WAIT_ON(ret, dev->vbl_queue[crtc], 3 * DRM_HZ, - ((drm_vblank_count(dev, crtc) - - vblwait->request.sequence) <= (1 << 23))); + (((drm_vblank_count(dev, crtc) - + vblwait->request.sequence) <= (1 << 23)) || + !dev->irq_enabled)); if (ret != -EINTR) { struct timeval now; |