From 10b1aed6dac01d566b6b3c261a191546c82f0157 Mon Sep 17 00:00:00 2001
From: Helen Koike <helen.koike@collabora.com>
Date: Thu, 8 Aug 2019 21:27:40 -0300
Subject: [PATCH] media: Revert "media: vimc: Remove or modify stream checks"
Git-commit: 10b1aed6dac01d566b6b3c261a191546c82f0157
Patch-mainline: v5.4-rc1
References: git-fixes

This reverts commit 3c1b9ac753e99005d7ee0a883d6e5b577ba32aa9.

Required to Revert "media: vimc: propagate pixel format in the stream"
which introduced the stream object in the vimc_ent_device struct.

Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Lucas A. M. Magalhaes <lucmaga@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/media/platform/vimc/vimc-debayer.c | 5 ++++-
 drivers/media/platform/vimc/vimc-scaler.c  | 7 +++++--
 drivers/media/platform/vimc/vimc-sensor.c  | 6 +++++-
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c
index 00598fbf3cba..72adba6cf892 100644
--- a/drivers/media/platform/vimc/vimc-debayer.c
+++ b/drivers/media/platform/vimc/vimc-debayer.c
@@ -262,7 +262,7 @@ static int vimc_deb_set_fmt(struct v4l2_subdev *sd,
 
 	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 		/* Do not change the format while stream is on */
-		if (vdeb->ved.stream)
+		if (vdeb->src_frame)
 			return -EBUSY;
 
 		sink_fmt = &vdeb->sink_fmt;
@@ -329,6 +329,9 @@ static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
 		const struct v4l2_format_info *pix_info;
 		unsigned int frame_size;
 
+		if (vdeb->src_frame)
+			return 0;
+
 		/* We only support translating bayer to RGB24 */
 		if (src_pixelformat != V4L2_PIX_FMT_RGB24) {
 			dev_err(vdeb->dev,
diff --git a/drivers/media/platform/vimc/vimc-scaler.c b/drivers/media/platform/vimc/vimc-scaler.c
index c7123a45c55b..5f31c1e351a3 100644
--- a/drivers/media/platform/vimc/vimc-scaler.c
+++ b/drivers/media/platform/vimc/vimc-scaler.c
@@ -148,7 +148,7 @@ static int vimc_sca_set_fmt(struct v4l2_subdev *sd,
 
 	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 		/* Do not change the format while stream is on */
-		if (vsca->ved.stream)
+		if (vsca->src_frame)
 			return -EBUSY;
 
 		sink_fmt = &vsca->sink_fmt;
@@ -203,6 +203,9 @@ static int vimc_sca_s_stream(struct v4l2_subdev *sd, int enable)
 		const struct v4l2_format_info *pix_info;
 		unsigned int frame_size;
 
+		if (vsca->src_frame)
+			return 0;
+
 		if (!vimc_sca_is_pixfmt_supported(pixelformat)) {
 			dev_err(vsca->dev, "pixfmt (0x%08x) is not supported\n",
 				pixelformat);
@@ -324,7 +327,7 @@ static void *vimc_sca_process_frame(struct vimc_ent_device *ved,
 						    ved);
 
 	/* If the stream in this node is not active, just return */
-	if (!ved->stream)
+	if (!vsca->src_frame)
 		return ERR_PTR(-EINVAL);
 
 	vimc_sca_fill_src_frame(vsca, sink_frame);
diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c
index 51359472eef2..c47454cc7f70 100644
--- a/drivers/media/platform/vimc/vimc-sensor.c
+++ b/drivers/media/platform/vimc/vimc-sensor.c
@@ -131,7 +131,7 @@ static int vimc_sen_set_fmt(struct v4l2_subdev *sd,
 
 	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 		/* Do not change the format while stream is on */
-		if (vsen->ved.stream)
+		if (vsen->frame)
 			return -EBUSY;
 
 		mf = &vsen->mbus_format;
@@ -187,6 +187,10 @@ static int vimc_sen_s_stream(struct v4l2_subdev *sd, int enable)
 		const struct v4l2_format_info *pix_info;
 		unsigned int frame_size;
 
+		if (vsen->kthread_sen)
+			/* tpg is already executing */
+			return 0;
+
 		/* Calculate the frame size */
 		pix_info = v4l2_format_info(pixelformat);
 		frame_size = vsen->mbus_format.width * pix_info->bpp[0] *
-- 
2.16.4