This is a note to let you know that I've just added the patch titled
media: venus: provide ctx queue lock for ioctl synchronization
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-venus-provide-ctx-queue-lock-for-ioctl-synchro.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c390f97011660a6a0e8fa842bf7615bdae82011a
Author: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Date: Fri May 26 07:29:34 2023 +0100
media: venus: provide ctx queue lock for ioctl synchronization
[ Upstream commit 34318b808ef20cdddd4e187ea2df0455936cf61b ]
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>
Reviewed-by: Vikash Garodia <quic_vgarodia@xxxxxxxxxxx>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Signed-off-by: Stanimir Varbanov <stanimir.k.varbanov@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Stable-dep-of: 6c9934c5a00a ("media: venus: fix enc/dec destruction order")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index cf9d2dd265f7d..b83e4cb214d39 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -381,6 +381,7 @@ 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
@@ -448,6 +449,7 @@ 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 fef414f624069..3cb8a284fc68f 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -1537,6 +1537,7 @@ 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;
@@ -1551,6 +1552,7 @@ 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);
}
@@ -1569,6 +1571,7 @@ 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;
@@ -1643,6 +1646,7 @@ 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 ae47535168d12..4a439b4908ea7 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -1355,6 +1355,7 @@ 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);
@@ -1371,6 +1372,7 @@ 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);
}
@@ -1403,6 +1405,7 @@ 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;
@@ -1471,6 +1474,7 @@ 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);
