From: Miaoqian Lin linmq006@gmail.com
[ Upstream commit c766c90faf93897b77c9c5daa603cffab85ba907 ]
rcar_fcp_get() take reference, which should be balanced with rcar_fcp_put(). Add missing rcar_fcp_put() in fdp1_remove and the error paths of fdp1_probe() to fix this.
Fixes: 4710b752e029 ("[media] v4l: Add Renesas R-Car FDP1 Driver") Signed-off-by: Miaoqian Lin linmq006@gmail.com Reviewed-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com Signed-off-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com [hverkuil: resolve merge conflict, remove() is now void] Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/rcar_fdp1.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/media/platform/rcar_fdp1.c b/drivers/media/platform/rcar_fdp1.c index 0967b10a459b1..af2408b4856e6 100644 --- a/drivers/media/platform/rcar_fdp1.c +++ b/drivers/media/platform/rcar_fdp1.c @@ -2317,8 +2317,10 @@ static int fdp1_probe(struct platform_device *pdev)
/* Determine our clock rate */ clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(clk)) - return PTR_ERR(clk); + if (IS_ERR(clk)) { + ret = PTR_ERR(clk); + goto put_dev; + }
fdp1->clk_rate = clk_get_rate(clk); clk_put(clk); @@ -2327,7 +2329,7 @@ static int fdp1_probe(struct platform_device *pdev) ret = v4l2_device_register(&pdev->dev, &fdp1->v4l2_dev); if (ret) { v4l2_err(&fdp1->v4l2_dev, "Failed to register video device\n"); - return ret; + goto put_dev; }
/* M2M registration */ @@ -2397,6 +2399,8 @@ static int fdp1_probe(struct platform_device *pdev) unreg_dev: v4l2_device_unregister(&fdp1->v4l2_dev);
+put_dev: + rcar_fcp_put(fdp1->fcp); return ret; }
@@ -2408,6 +2412,7 @@ static int fdp1_remove(struct platform_device *pdev) video_unregister_device(&fdp1->vfd); v4l2_device_unregister(&fdp1->v4l2_dev); pm_runtime_disable(&pdev->dev); + rcar_fcp_put(fdp1->fcp);
return 0; }