linux-kernel - [PATCH] media: bdisp: add missed destroy_workqueue in remove and probe failure

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Date:   Wed, 13 Nov 2019 14:37:30 +0800
From:   Chuhong Yuan <hslester96@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Fabien Dessenne <fabien.dessenne@...com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chuhong Yuan <hslester96@...il.com>
Subject: [PATCH] media: bdisp: add missed destroy_workqueue in remove and probe failure

The driver forgets to call destroy_workqueue when remove and probe fails.
Add the missed calls to fix it.

Signed-off-by: Chuhong Yuan <hslester96@...il.com>
---
 drivers/media/platform/sti/bdisp/bdisp-v4l2.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
index e90f1ba30574..4c0b36236a38 100644
--- a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
+++ b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
@@ -1275,6 +1275,8 @@ static int bdisp_remove(struct platform_device *pdev)
 	if (!IS_ERR(bdisp->clock))
 		clk_unprepare(bdisp->clock);
 
+	destroy_workqueue(bdisp->work_queue);
+
 	dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name);
 
 	return 0;
@@ -1318,20 +1320,22 @@ static int bdisp_probe(struct platform_device *pdev)
 	bdisp->regs = devm_ioremap_resource(dev, res);
 	if (IS_ERR(bdisp->regs)) {
 		dev_err(dev, "failed to get regs\n");
-		return PTR_ERR(bdisp->regs);
+		ret = PTR_ERR(bdisp->regs);
+		goto err_wq;
 	}
 
 	bdisp->clock = devm_clk_get(dev, BDISP_NAME);
 	if (IS_ERR(bdisp->clock)) {
 		dev_err(dev, "failed to get clock\n");
-		return PTR_ERR(bdisp->clock);
+		ret = PTR_ERR(bdisp->clock);
+		goto err_wq;
 	}
 
 	ret = clk_prepare(bdisp->clock);
 	if (ret < 0) {
 		dev_err(dev, "clock prepare failed\n");
 		bdisp->clock = ERR_PTR(-EINVAL);
-		return ret;
+		goto err_wq;
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
@@ -1403,7 +1407,8 @@ static int bdisp_probe(struct platform_device *pdev)
 err_clk:
 	if (!IS_ERR(bdisp->clock))
 		clk_unprepare(bdisp->clock);
-
+err_wq:
+	destroy_workqueue(bdisp->work_queue);
 	return ret;
 }
 
-- 
2.23.0