linux-kernel - [PATCH] media: venus: core: Fix a resource leak in error handling paths of the probe function

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Date:   Thu, 17 Dec 2020 13:17:25 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     stanimir.varbanov@...aro.org, agross@...nel.org,
        bjorn.andersson@...aro.org, mchehab@...nel.org,
        georgi.djakov@...aro.org
Cc:     linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] media: venus: core: Fix a resource leak in error handling paths of the probe function

Add 2 missing 'icc_put()' calls in the error handling path of the probe
function, as already done in the remove function.

Fixes: 32f0a6ddc8c9 ("media: venus: Use on-chip interconnect API")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/media/platform/qcom/venus/core.c | 31 +++++++++++++++++-------
 1 file changed, 22 insertions(+), 9 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
index bdd293faaad0..2e6ce215740b 100644
--- a/drivers/media/platform/qcom/venus/core.c
+++ b/drivers/media/platform/qcom/venus/core.c
@@ -200,27 +200,35 @@ static int venus_probe(struct platform_device *pdev)
 		return PTR_ERR(core->video_path);
 
 	core->cpucfg_path = of_icc_get(dev, "cpu-cfg");
-	if (IS_ERR(core->cpucfg_path))
-		return PTR_ERR(core->cpucfg_path);
+	if (IS_ERR(core->cpucfg_path)) {
+		ret = PTR_ERR(core->cpucfg_path);
+		goto err_video_path_put;
+	}
 
 	core->irq = platform_get_irq(pdev, 0);
-	if (core->irq < 0)
-		return core->irq;
+	if (core->irq < 0) {
+		ret = core->irq;
+		goto err_cpucfg_path_put;
+	}
 
 	core->res = of_device_get_match_data(dev);
-	if (!core->res)
-		return -ENODEV;
+	if (!core->res) {
+		ret = -ENODEV;
+		goto err_cpucfg_path_put;
+	}
 
 	mutex_init(&core->pm_lock);
 
 	core->pm_ops = venus_pm_get(core->res->hfi_version);
-	if (!core->pm_ops)
-		return -ENODEV;
+	if (!core->pm_ops) {
+		ret = -ENODEV;
+		goto err_cpucfg_path_put;
+	}
 
 	if (core->pm_ops->core_get) {
 		ret = core->pm_ops->core_get(dev);
 		if (ret)
-			return ret;
+			goto err_cpucfg_path_put;
 	}
 
 	ret = dma_set_mask_and_coherent(dev, core->res->dma_mask);
@@ -305,6 +313,11 @@ static int venus_probe(struct platform_device *pdev)
 err_core_put:
 	if (core->pm_ops->core_put)
 		core->pm_ops->core_put(dev);
+err_cpucfg_path_put:
+	icc_put(core->cpucfg_path);
+err_video_path_put:
+	icc_put(core->video_path);
+
 	return ret;
 }
 
-- 
2.27.0