[v4,24/26] media: mc: Warn about drivers not releasing media device safely

Message ID 20240610100530.1107771-25-sakari.ailus@linux.intel.com (mailing list archive)
State New
Headers
Series Media device lifetime management |

Commit Message

Sakari Ailus June 10, 2024, 10:05 a.m. UTC
  The media device and associated resources may be released only when its
memory is no longer used. Warn about drivers not doing this, but instead
releasing the resources at driver unbind time.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/mc/mc-device.c | 3 +++
 1 file changed, 3 insertions(+)
  

Patch

diff --git a/drivers/media/mc/mc-device.c b/drivers/media/mc/mc-device.c
index 8cdd0d46e865..51836faa6d1a 100644
--- a/drivers/media/mc/mc-device.c
+++ b/drivers/media/mc/mc-device.c
@@ -822,6 +822,9 @@  int __must_check __media_device_register(struct media_device *mdev,
 		ref = kzalloc(sizeof(*mdev->devnode.ref), GFP_KERNEL);
 		if (!ref)
 			return -ENOMEM;
+
+		dev_warn(mdev->dev,
+			 "Set mdev release op to safely release resources!\n");
 	}
 
 	/* Register the device node. */