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Diffstat (limited to 'drivers/gpu/drm/drm_fops.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fops.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index a39794bac04b..2ec7d48fc4a8 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -236,6 +236,8 @@ static int drm_open_helper(struct inode *inode, struct file *filp, return -EBUSY; /* No exclusive opens */ if (!drm_cpu_valid()) return -EINVAL; + if (dev->switch_power_state != DRM_SWITCH_POWER_ON) + return -EINVAL; DRM_DEBUG("pid = %d, minor = %d\n", task_pid_nr(current), minor_id); |