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-rw-r--r--linux-core/drm_irq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/linux-core/drm_irq.c b/linux-core/drm_irq.c
index 37c89762..7f21205d 100644
--- a/linux-core/drm_irq.c
+++ b/linux-core/drm_irq.c
@@ -250,7 +250,7 @@ int drm_wait_vblank(DRM_IOCTL_ARGS)
if (!drm_core_check_feature(dev, DRIVER_IRQ_VBL))
return -EINVAL;
- if (!dev->irq)
+ if ((!dev->irq) || (!dev->irq_enabled))
return -EINVAL;
DRM_COPY_FROM_USER_IOCTL(vblwait, argp, sizeof(vblwait));