[PATCH] venus: venc,vdec: Return EBUSY on S_FMT while streaming

[PATCH] venus: venc,vdec: Return EBUSY on S_FMT while streaming

[Stanimir Varbanov]

According to the v4l spec s_fmt must return EBUSY while the
particular queue is streaming. Add such check in encoder and
decoder s_fmt methods.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
---
 drivers/media/platform/qcom/venus/vdec.c | 8 ++++++++
 drivers/media/platform/qcom/venus/venc.c | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index 527944c822b5..7c4c483d5438 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -276,6 +276,14 @@ static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
 	const struct venus_format *fmt;
 	struct v4l2_format format;
 	u32 pixfmt_out = 0, pixfmt_cap = 0;
+	struct vb2_queue *q;
+
+	q = v4l2_m2m_get_vq(inst->m2m_ctx, f->type);
+	if (!q)
+		return -EINVAL;
+
+	if (vb2_is_busy(q))
+		return -EBUSY;
 
 	orig_pixmp = *pixmp;
 
diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 3d8431dc14c4..feed648550d1 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -357,6 +357,14 @@ static int venc_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
 	const struct venus_format *fmt;
 	struct v4l2_format format;
 	u32 pixfmt_out = 0, pixfmt_cap = 0;
+	struct vb2_queue *q;
+
+	q = v4l2_m2m_get_vq(inst->m2m_ctx, f->type);
+	if (!q)
+		return -EINVAL;
+
+	if (vb2_is_busy(q))
+		return -EBUSY;
 
 	orig_pixmp = *pixmp;
 
-- 
2.17.1