[PATCH 10/21] media: ipu6: Add lockdep checks for CSI-2 streaming enable and disable

[Sakari Ailus <sakari.ailus@linux.intel.com>]

The callbacks for enabling and disabling streams access data serialised
using the isys stream_mutex; add lockdep checks for this.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c b/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
index 946a9fbfd6bf..70b48d02c0c0 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
@@ -536,6 +536,8 @@ static int ipu6_isys_csi2_enable_streams(struct v4l2_subdev *sd,
 	int ret;
 	u8 vc;
 
+	lockdep_assert_held(&csi2->isys->stream_mutex);
+
 	ret = ipu6_isys_buffer_list_get(av->stream, &bl);
 	if (ret < 0) {
 		dev_warn(sd->dev, "no buffer available, DRIVER BUG?\n");
@@ -608,6 +610,8 @@ static int ipu6_isys_csi2_disable_streams(struct v4l2_subdev *sd,
 	u64 sink_streams;
 	u8 vc;
 
+	lockdep_assert_held(&csi2->isys->stream_mutex);
+
 	if (!ipu6_isys_csi2_streaming_change(asd, state, pad, &vc, false))
 		goto out_del_csi2_entry;
 
-- 
2.47.3