[PATCH 5.18 0439/1095] media: amphion: sync buffer status with firmware during abort

Greg Kroah-Hartman
2022-08-15T21:18:49Z

From: Ming Qian <ming.qian@nxp.com>

[ Upstream commit d8f1eb105eab7aab36323c6b488dda479d5bd2da ]

1. prevent to allocate buffer to firmware during abort
2. release buffer when clear the slots

Fixes: 6de8d628df6ef ("media: amphion: add v4l2 m2m vpu decoder stateful driver")
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/vdec.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/media/platform/amphion/vdec.c b/drivers/media/platform/amphion/vdec.c
index 052a60189c13..dd7ea23902c0 100644
--- a/drivers/media/platform/amphion/vdec.c
+++ b/drivers/media/platform/amphion/vdec.c
@@ -63,6 +63,7 @@ struct vdec_t {
bool is_source_changed;
u32 source_change;
u32 drain;
+ bool aborting;
};

static const struct vpu_format vdec_formats[] = {
@@ -942,6 +943,9 @@ static int vdec_response_frame(struct vpu_inst *inst, struct vb2_v4l2_buffer *vb
if (inst->state != VPU_CODEC_STATE_ACTIVE)
return -EINVAL;

+ if (vdec->aborting)
+ return -EINVAL;
+
if (!vdec->req_frame_count)
return -EINVAL;

@@ -1051,6 +1055,8 @@ static void vdec_clear_slots(struct vpu_inst *inst)
vpu_buf = vdec->slots[i];
vbuf = &vpu_buf->m2m_buf.vb;

+ vpu_trace(inst->dev, "clear slot %d\n", i);
+ vdec_response_fs_release(inst, i, vpu_buf->tag);
vdec_recycle_buffer(inst, vbuf);
vdec->slots[i]->state = VPU_BUF_STATE_IDLE;
vdec->slots[i] = NULL;
@@ -1312,6 +1318,8 @@ static void vdec_abort(struct vpu_inst *inst)
int ret;

vpu_trace(inst->dev, "[%d] state = %d\n", inst->id, inst->state);
+
+ vdec->aborting = true;
vpu_iface_add_scode(inst, SCODE_PADDING_ABORT);
vdec->params.end_flag = 1;
vpu_iface_set_decode_params(inst, &vdec->params, 1);
@@ -1335,6 +1343,7 @@ static void vdec_abort(struct vpu_inst *inst)
vdec->decoded_frame_count = 0;
vdec->display_frame_count = 0;
vdec->sequence = 0;
+ vdec->aborting = false;
}

static void vdec_stop(struct vpu_inst *inst, bool free)
--
2.35.1