[PATCH 12/55] media: rkisp1: Reject sensors without pixel rate control at bound time

[Paul Elder]

From: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

The rkisp1 driver requires the sensor to implement the pixel rate
control. Trying to operate without it will cause an error when starting
streaming. Catch the issue earlier, at bound time.

Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c | 6 ++++++
 drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c | 5 -----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
index 39ae35074062..7fc617d51f44 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
@@ -190,6 +190,12 @@ static int rkisp1_subdev_notifier_bound(struct v4l2_async_notifier *notifier,
 
 	s_asd->pixel_rate_ctrl = v4l2_ctrl_find(sd->ctrl_handler,
 						V4L2_CID_PIXEL_RATE);
+	if (!s_asd->pixel_rate_ctrl) {
+		dev_err(rkisp1->dev, "No pixel rate control in subdev %s\n",
+			sd->name);
+		return -EINVAL;
+	}
+
 	s_asd->sd = sd;
 	s_asd->dphy = devm_phy_get(rkisp1->dev, "dphy");
 	if (IS_ERR(s_asd->dphy)) {
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
index 58cf6d21f1eb..81138c676ac0 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
@@ -823,11 +823,6 @@ static int rkisp1_mipi_csi2_start(struct rkisp1_isp *isp,
 	struct phy_configure_opts_mipi_dphy *cfg = &opts.mipi_dphy;
 	s64 pixel_clock;
 
-	if (!sensor->pixel_rate_ctrl) {
-		dev_warn(rkisp1->dev, "No pixel rate control in sensor subdev\n");
-		return -EPIPE;
-	}
-
 	pixel_clock = v4l2_ctrl_g_ctrl_int64(sensor->pixel_rate_ctrl);
 	if (!pixel_clock) {
 		dev_err(rkisp1->dev, "Invalid pixel rate value\n");
-- 
2.30.2