[PATCH] media: i2c: cx25840: guard media_entity_cleanup() calls

[Zixin Wang <w1355457260@gmail.com>]

sd->entity only exists when CONFIG_MEDIA_CONTROLLER is enabled, but the
two media_entity_cleanup() calls added by commit 634be628b5cc
("media: i2c: cx25840-core: Add missing media_entity_cleanup()") are
unconditional.  Building with CONFIG_MEDIA_CONTROLLER=n therefore fails:

  drivers/media/i2c/cx25840/cx25840-core.c:3964:41: error:
  'struct v4l2_subdev' has no member named 'entity'

Guard both calls with #if defined(CONFIG_MEDIA_CONTROLLER), matching the
existing media entity setup in cx25840_probe().

The failure was reproduced with CONFIG_MEDIA_CONTROLLER=n.  After the
change the driver builds with both CONFIG_MEDIA_CONTROLLER=n and =y.

AI assistance: the fix and this changelog were drafted with the Qoder
coding assistant; the sender reviewed the change and ran the builds.

Fixes: 634be628b5cc ("media: i2c: cx25840-core: Add missing media_entity_cleanup()")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=222245
Signed-off-by: Zixin Wang <w1355457260@gmail.com>
---
 drivers/media/i2c/cx25840/cx25840-core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c
index 7066b2252afd..91794ec59e2d 100644
--- a/drivers/media/i2c/cx25840/cx25840-core.c
+++ b/drivers/media/i2c/cx25840/cx25840-core.c
@@ -3961,7 +3961,9 @@ static int cx25840_probe(struct i2c_client *client)
 		int err = state->hdl.error;
 
 		v4l2_ctrl_handler_free(&state->hdl);
+#if defined(CONFIG_MEDIA_CONTROLLER)
 		media_entity_cleanup(&sd->entity);
+#endif
 		return err;
 	}
 	if (!is_cx2583x(state))
@@ -3986,7 +3988,9 @@ static void cx25840_remove(struct i2c_client *client)
 	cx25840_ir_remove(sd);
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&state->hdl);
+#if defined(CONFIG_MEDIA_CONTROLLER)
 	media_entity_cleanup(&sd->entity);
+#endif
 }
 
 static const struct i2c_device_id cx25840_id[] = {
-- 
2.56.1