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From:   Aditya Pakki <pakki001@umn.edu>
To:     pakki001@umn.edu
Cc:     kjlu@umn.edu, wu000273@umn.edu,
        Fabien Dessenne <fabien.dessenne@st.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] media: bdisp: fix reference count leaks due to pm_runtime_get_sync
Date:   Sat, 13 Jun 2020 22:49:36 -0500
Message-Id: <20200614034936.130872-1-pakki001@umn.edu>
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Sender: linux-kernel-owner@vger.kernel.org
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On calling pm_runtime_get_sync() the reference count of the device
is incremented. In case of failure, decrement the
reference count before returning the error.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
---
 drivers/media/platform/sti/bdisp/bdisp-v4l2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
index af2d5eb782ce..098914ca4f68 100644
--- a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
+++ b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
@@ -512,6 +512,7 @@ static int bdisp_start_streaming(struct vb2_queue *q, unsigned int count)
 				v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
 		}
 
+		pm_runtime_put(ctx->bdisp_dev->dev);
 		return ret;
 	}
 
@@ -1371,7 +1372,7 @@ static int bdisp_probe(struct platform_device *pdev)
 	ret = pm_runtime_get_sync(dev);
 	if (ret < 0) {
 		dev_err(dev, "failed to set PM\n");
-		goto err_dbg;
+		goto err_pm;
 	}
 
 	/* Filters */
-- 
2.25.1