diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_debugfs_crc.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c index d0ea4627a093..f9e26dda56d6 100644 --- a/drivers/gpu/drm/drm_debugfs_crc.c +++ b/drivers/gpu/drm/drm_debugfs_crc.c @@ -154,6 +154,19 @@ static int crtc_crc_open(struct inode *inode, struct file *filep) size_t values_cnt; int ret = 0; + if (drm_drv_uses_atomic_modeset(crtc->dev)) { + ret = drm_modeset_lock_interruptible(&crtc->mutex, NULL); + if (ret) + return ret; + + if (!crtc->state->active) + ret = -EIO; + drm_modeset_unlock(&crtc->mutex); + + if (ret) + return ret; + } + spin_lock_irq(&crc->lock); if (!crc->opened) crc->opened = true; |
