[PATCH 2/2] media: ipu6: Warn if the active list isn't empty when returning buffers

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

The ISYS needs a reset when the active buffer list isn't empty. Warn about
this.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/pci/intel/ipu6/ipu6-isys-queue.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c b/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
index 2608e3b91acb..c9ecda158fd1 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-queue.c
@@ -423,6 +423,7 @@ static void return_buffers(struct ipu6_isys_queue *aq,
 	struct ipu6_isys_video *av = ipu6_isys_queue_to_video(aq);
 	struct ipu6_isys_buffer *ib;
 	bool need_reset = false;
+	bool first_buf = true;
 	unsigned long flags;
 
 	spin_lock_irqsave(&aq->lock, flags);
@@ -448,6 +449,12 @@ static void return_buffers(struct ipu6_isys_queue *aq,
 	while (!list_empty(&aq->active)) {
 		struct vb2_buffer *vb;
 
+		if (first_buf) {
+			dev_warn(&av->isys->adev->auxdev.dev,
+				 "buffer list not empty, needs isys reset\n");
+			first_buf = false;
+		}
+
 		ib = list_first_entry(&aq->active, struct ipu6_isys_buffer,
 				      head);
 		vb = ipu6_isys_buffer_to_vb2_buffer(ib);
-- 
2.47.3