linux-kernel - [PATCH] media: st-delta: Fix PM disable depth imbalance in delta

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Date:   Wed,  5 Jan 2022 11:55:15 +0000
From:   Miaoqian Lin <linmq006@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linmq006@...il.com, Hugues Fruchet <hugues.fruchet@...s.st.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Peter Griffin <peter.griffin@...aro.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] media: st-delta: Fix PM disable depth imbalance in delta_probe

The pm_runtime_enable will increase power disable depth.
If the probe fails, we should use pm_runtime_disable() to balance
pm_runtime_enable().

Fixes: f386509 ("[media] st-delta: STiH4xx multi-format video decoder v4l2 driver")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/media/platform/sti/delta/delta-v4l2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/platform/sti/delta/delta-v4l2.c b/drivers/media/platform/sti/delta/delta-v4l2.c
index c887a31ebb54..dbcfd0484da4 100644
--- a/drivers/media/platform/sti/delta/delta-v4l2.c
+++ b/drivers/media/platform/sti/delta/delta-v4l2.c
@@ -1898,6 +1898,8 @@ static int delta_probe(struct platform_device *pdev)
 	destroy_workqueue(delta->work_queue);
 err_v4l2:
 	v4l2_device_unregister(&delta->v4l2_dev);
+disable_pm_runtime:
+	pm_runtime_disable(dev);
 err:
 	return ret;
 }
-- 
2.17.1