Video device has to provide a lock so that __video_do_ioctl()
can serialize IOCTL calls. Introduce a dedicated venus_inst
mutex for the purpose of vb2 operations synchronization.
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
---
drivers/media/platform/qcom/venus/core.h | 2 ++
drivers/media/platform/qcom/venus/vdec.c | 4 ++++
drivers/media/platform/qcom/venus/venc.c | 4 ++++
3 files changed, 10 insertions(+)
diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index 4f81669986ba..06ed7b0d3262 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -389,6 +389,7 @@ enum venus_inst_modes {
* @sequence_out: a sequence counter for output queue
* @m2m_dev: a reference to m2m device structure
* @m2m_ctx: a reference to m2m context structure
+ * @ctx_q_lock: a lock to serialize video device ioctl calls
* @state: current state of the instance
* @done: a completion for sync HFI operation
* @error: an error returned during last HFI sync operation
@@ -460,6 +461,7 @@ struct venus_inst {
u32 sequence_out;
struct v4l2_m2m_dev *m2m_dev;
struct v4l2_m2m_ctx *m2m_ctx;
+ struct mutex ctx_q_lock;
unsigned int state;
struct completion done;
unsigned int error;
diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index 51a53bf82bd3..be3f8c4cda08 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -1609,6 +1609,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
src_vq->allow_zero_bytesused = 1;
src_vq->min_buffers_needed = 0;
src_vq->dev = inst->core->dev;
+ src_vq->lock = &inst->ctx_q_lock;
ret = vb2_queue_init(src_vq);
if (ret)
return ret;
@@ -1623,6 +1624,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->allow_zero_bytesused = 1;
dst_vq->min_buffers_needed = 0;
dst_vq->dev = inst->core->dev;
+ dst_vq->lock = &inst->ctx_q_lock;
return vb2_queue_init(dst_vq);
}
@@ -1641,6 +1643,7 @@ static int vdec_open(struct file *file)
INIT_LIST_HEAD(&inst->internalbufs);
INIT_LIST_HEAD(&inst->list);
mutex_init(&inst->lock);
+ mutex_init(&inst->ctx_q_lock);
inst->core = core;
inst->session_type = VIDC_SESSION_TYPE_DEC;
@@ -1716,6 +1719,7 @@ static int vdec_close(struct file *file)
ida_destroy(&inst->dpb_ids);
hfi_session_destroy(inst);
mutex_destroy(&inst->lock);
+ mutex_destroy(&inst->ctx_q_lock);
v4l2_fh_del(&inst->fh);
v4l2_fh_exit(&inst->fh);
diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 4666f42feea3..8b86873f2458 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -1395,6 +1395,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
src_vq->allow_zero_bytesused = 1;
src_vq->min_buffers_needed = 1;
src_vq->dev = inst->core->dev;
+ src_vq->lock = &inst->ctx_q_lock;
if (inst->core->res->hfi_version == HFI_VERSION_1XX)
src_vq->bidirectional = 1;
ret = vb2_queue_init(src_vq);
@@ -1411,6 +1412,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->allow_zero_bytesused = 1;
dst_vq->min_buffers_needed = 1;
dst_vq->dev = inst->core->dev;
+ dst_vq->lock = &inst->ctx_q_lock;
return vb2_queue_init(dst_vq);
}
@@ -1443,6 +1445,7 @@ static int venc_open(struct file *file)
INIT_LIST_HEAD(&inst->internalbufs);
INIT_LIST_HEAD(&inst->list);
mutex_init(&inst->lock);
+ mutex_init(&inst->ctx_q_lock);
inst->core = core;
inst->session_type = VIDC_SESSION_TYPE_ENC;
@@ -1512,6 +1515,7 @@ static int venc_close(struct file *file)
venc_ctrl_deinit(inst);
hfi_session_destroy(inst);
mutex_destroy(&inst->lock);
+ mutex_destroy(&inst->ctx_q_lock);
v4l2_fh_del(&inst->fh);
v4l2_fh_exit(&inst->fh);
--
2.41.0.rc0.172.g3f132b7071-goog
