[PATCH v2 02/14] media: v4l2-subdev: Allow accessing routes with STREAMS client capability

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Disable access to routes when the STREAMS client capability bit isn't set.
Routes aren't relevant otherwise anyway.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/v4l2-core/v4l2-subdev.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 66842b975f91..b2105c34478e 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -1008,6 +1008,9 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
 		if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS))
 			return -ENOIOCTLCMD;
 
+		if (!client_supports_streams)
+			return -EINVAL;
+
 		memset(routing->reserved, 0, sizeof(routing->reserved));
 
 		krouting = &state->routing;
@@ -1035,6 +1038,9 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg,
 		if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS))
 			return -ENOIOCTLCMD;
 
+		if (!client_supports_streams)
+			return -EINVAL;
+
 		if (routing->which != V4L2_SUBDEV_FORMAT_TRY && ro_subdev)
 			return -EPERM;
 
-- 
2.47.3