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path: root/drivers/gpu/drm/drm_fops.c
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Diffstat (limited to 'drivers/gpu/drm/drm_fops.c')
-rw-r--r--drivers/gpu/drm/drm_fops.c2
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);