6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ma Ke <redacted>

commit 108d7f951271cbd36ca36efc5e5d106966f5180c upstream.

pika_dtm_thread() acquires client through of_find_i2c_device_by_node()
but fails to release it in error handling path. This could result in a
reference count leak, preventing proper cleanup and potentially
leading to resource exhaustion. Add put_device() to release the
reference in the error handling path.

Found by code review.

Cc: stable@vger.kernel.org
Fixes: 3984114f0562 ("powerpc/warp: Platform fix for i2c change")
Signed-off-by: Ma Ke <redacted>
Reviewed-by: Christophe Leroy <redacted>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20251116024411.21968-1-make24@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/powerpc/platforms/44x/warp.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/powerpc/platforms/44x/warp.c
+++ b/arch/powerpc/platforms/44x/warp.c

@@ -292,6 +292,8 @@ static int pika_dtm_thread(void __iomem
 		schedule_timeout(HZ);
 	}
 
+	put_device(&client->dev);
+
 	return 0;
 }