drm/i915: Reject opening of pipe crc files for invalid pipes



We don't init the lock nor set up all the other state. And it doesn't
make sense anyway.

This appeases lockdep when running the igt/drv_debugfs_reader test.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

parent b378360e

drivers/gpu/drm/i915/i915_debugfs.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1771,6 +1771,9 @@ static int i915_pipe_crc_open(struct inode inode, struct file filep)
		struct drm_i915_private *dev_priv = info->dev->dev_private;
		struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];

		if (info->pipe >= INTEL_INFO(info->dev)->num_pipes)
		return -ENODEV;

		spin_lock_irq(&pipe_crc->lock);

		if (pipe_crc->opened) {