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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Ming Qian <ming.qian@nxp.com>,
        Hans Verkuil <hverkuil-cisco@xs4all.nl>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.18 0350/1095] media: amphion: return error if format is unsupported by vpu
Date:   Mon, 15 Aug 2022 19:55:49 +0200
Message-Id: <20220815180444.248436828@linuxfoundation.org>
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From: Ming Qian <ming.qian@nxp.com>

[ Upstream commit a3a2efca36a3a1ddba229a7be7991e8b5de4ac35 ]

return error if format is unsupported by vpu,
otherwise the vpu will be stalled at decoding

Fixes: 3cd084519c6f9 ("media: amphion: add vpu v4l2 m2m support")
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/platform/amphion/vpu_malone.c | 2 ++
 drivers/media/platform/amphion/vpu_v4l2.c   | 6 ++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/amphion/vpu_malone.c b/drivers/media/platform/amphion/vpu_malone.c
index 446a9de0cc11..d91be0ece961 100644
--- a/drivers/media/platform/amphion/vpu_malone.c
+++ b/drivers/media/platform/amphion/vpu_malone.c
@@ -609,6 +609,8 @@ static int vpu_malone_set_params(struct vpu_shared_addr *shared,
 	enum vpu_malone_format malone_format;
 
 	malone_format = vpu_malone_format_remap(params->codec_format);
+	if (WARN_ON(malone_format == MALONE_FMT_NULL))
+		return -EINVAL;
 	iface->udata_buffer[instance].base = params->udata.base;
 	iface->udata_buffer[instance].slot_size = params->udata.size;
 
diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
index 9c0704cd5766..4183a3994d30 100644
--- a/drivers/media/platform/amphion/vpu_v4l2.c
+++ b/drivers/media/platform/amphion/vpu_v4l2.c
@@ -440,10 +440,12 @@ static int vpu_vb2_start_streaming(struct vb2_queue *q, unsigned int count)
 		  fmt->sizeimage[1], fmt->bytesperline[1],
 		  fmt->sizeimage[2], fmt->bytesperline[2],
 		  q->num_buffers);
-	call_void_vop(inst, start, q->type);
+	ret = call_vop(inst, start, q->type);
 	vb2_clear_last_buffer_dequeued(q);
+	if (ret)
+		vpu_vb2_buffers_return(inst, q->type, VB2_BUF_STATE_QUEUED);
 
-	return 0;
+	return ret;
 }
 
 static void vpu_vb2_stop_streaming(struct vb2_queue *q)
-- 
2.35.1