linux-kernel - [PATCH 01/20] media: iris: Skip destroying internal buffer if not dequeued

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Message-ID: <20250408-iris-dec-hevc-vp9-v1-1-acd258778bd6@quicinc.com>
Date: Tue, 8 Apr 2025 21:24:15 +0530
From: Dikshita Agarwal <quic_dikshita@...cinc.com>
To: Vikash Garodia <quic_vgarodia@...cinc.com>,
        Abhinav Kumar
	<quic_abhinavk@...cinc.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Stefan Schmidt <stefan.schmidt@...aro.org>,
        Hans Verkuil
	<hverkuil@...all.nl>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
CC: Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Dmitry Baryshkov
	<dmitry.baryshkov@...aro.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        "Dikshita
 Agarwal" <quic_dikshita@...cinc.com>,
        <stable@...r.kernel.org>
Subject: [PATCH 01/20] media: iris: Skip destroying internal buffer if not
 dequeued

Firmware might hold the DPB buffers for reference in case of sequence
change, so skip destroying buffers for which QUEUED flag is not removed.

Cc: stable@...r.kernel.org
Fixes: 73702f45db81 ("media: iris: allocate, initialize and queue internal buffers")
Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
---
 drivers/media/platform/qcom/iris/iris_buffer.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/media/platform/qcom/iris/iris_buffer.c b/drivers/media/platform/qcom/iris/iris_buffer.c
index e5c5a564fcb8..75fe63cc2327 100644
--- a/drivers/media/platform/qcom/iris/iris_buffer.c
+++ b/drivers/media/platform/qcom/iris/iris_buffer.c
@@ -396,6 +396,13 @@ int iris_destroy_internal_buffers(struct iris_inst *inst, u32 plane)
 	for (i = 0; i < len; i++) {
 		buffers = &inst->buffers[internal_buf_type[i]];
 		list_for_each_entry_safe(buf, next, &buffers->list, list) {
+			/*
+			 * skip destroying internal(DPB) buffer if firmware
+			 * did not return it.
+			 */
+			if (buf->attr & BUF_ATTR_QUEUED)
+				continue;
+
 			ret = iris_destroy_internal_buffer(inst, buf);
 			if (ret)
 				return ret;

-- 
2.34.1