[PATCH v3 11/23] media: iris: Fix buffer preparation failure during resolution change

[Dikshita Agarwal]

When the resolution changes, the driver internally updates the width and
height, but the client continue to queue buffers with the older
resolution until the last flag is received. This results in a mismatch
when the buffers are prepared, causing failure due to outdated size.

Introduce a check to prevent size validation during buffer preparation
if a resolution reconfiguration is in progress, to handle this.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 17f2a485ca67 ("media: iris: implement vb2 ops for buf_queue and firmware response")
Reviewed-by: Vikash Garodia <quic_vgarodia@xxxxxxxxxxx>
Signed-off-by: Dikshita Agarwal <quic_dikshita@xxxxxxxxxxx>
---
 drivers/media/platform/qcom/iris/iris_vb2.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/media/platform/qcom/iris/iris_vb2.c b/drivers/media/platform/qcom/iris/iris_vb2.c
index cdf11feb590b..b3bde10eb6d2 100644
--- a/drivers/media/platform/qcom/iris/iris_vb2.c
+++ b/drivers/media/platform/qcom/iris/iris_vb2.c
@@ -259,13 +259,14 @@ int iris_vb2_buf_prepare(struct vb2_buffer *vb)
 			return -EINVAL;
 	}
 
-	if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
-	    vb2_plane_size(vb, 0) < iris_get_buffer_size(inst, BUF_OUTPUT))
-		return -EINVAL;
-	if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
-	    vb2_plane_size(vb, 0) < iris_get_buffer_size(inst, BUF_INPUT))
-		return -EINVAL;
-
+	if (!(inst->sub_state & IRIS_INST_SUB_DRC)) {
+		if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
+		    vb2_plane_size(vb, 0) < iris_get_buffer_size(inst, BUF_OUTPUT))
+			return -EINVAL;
+		if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
+		    vb2_plane_size(vb, 0) < iris_get_buffer_size(inst, BUF_INPUT))
+			return -EINVAL;
+	}
 	return 0;
 }
 

-- 
2.34.1