[PATCH 5.15 270/913] media: staging: media: imx: imx7-mipi-csis: Make subdev name unique

[Greg Kroah-Hartman]

From: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

[ Upstream commit 5be7f8c91d25089be847a71b336c13b5bb0db772 ]

When multiple CSIS instances are present in a single graph, they are
currently all named "imx7-mipi-csis.0", which breaks the entity name
uniqueness requirement. Fix it by using the device name to create the
subdev name.

Fixes: 7807063b862b ("media: staging/imx7: add MIPI CSI-2 receiver subdev for i.MX7")
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Reviewed-by: Rui Miguel Silva <rmfrfs@xxxxxxxxx>
Reviewed-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Reviewed-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Tested-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx> # On i.MX8MP
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/staging/media/imx/imx7-mipi-csis.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c
index 41e33535de55..d35e52374116 100644
--- a/drivers/staging/media/imx/imx7-mipi-csis.c
+++ b/drivers/staging/media/imx/imx7-mipi-csis.c
@@ -32,7 +32,6 @@
 #include <media/v4l2-subdev.h>
 
 #define CSIS_DRIVER_NAME			"imx7-mipi-csis"
-#define CSIS_SUBDEV_NAME			CSIS_DRIVER_NAME
 
 #define CSIS_PAD_SINK				0
 #define CSIS_PAD_SOURCE				1
@@ -311,7 +310,6 @@ struct csi_state {
 	struct reset_control *mrst;
 	struct regulator *mipi_phy_regulator;
 	const struct mipi_csis_info *info;
-	u8 index;
 
 	struct v4l2_subdev sd;
 	struct media_pad pads[CSIS_PADS_NUM];
@@ -1303,8 +1301,8 @@ static int mipi_csis_subdev_init(struct csi_state *state)
 
 	v4l2_subdev_init(sd, &mipi_csis_subdev_ops);
 	sd->owner = THIS_MODULE;
-	snprintf(sd->name, sizeof(sd->name), "%s.%d",
-		 CSIS_SUBDEV_NAME, state->index);
+	snprintf(sd->name, sizeof(sd->name), "csis-%s",
+		 dev_name(state->dev));
 
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	sd->ctrl_handler = NULL;
-- 
2.34.1