linux-kernel - [PATCH 5.12 360/677] media: venus: core: Fix some resource leaks in the error path of venus

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Date:   Wed, 12 May 2021 16:46:46 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.12 360/677] media: venus: core: Fix some resource leaks in the error path of venus_probe()

From: Christophe JAILLET <christophe.jaillet@...adoo.fr>

[ Upstream commit 5a465c5391a856a0c1e9554964d660676c35d1b2 ]

If an error occurs after a successful 'of_icc_get()' call, it must be
undone.

Use 'devm_of_icc_get()' instead of 'of_icc_get()' to avoid the leak.
Update the remove function accordingly and axe the now unneeded
'icc_put()' calls.

Fixes: 32f0a6ddc8c9 ("media: venus: Use on-chip interconnect API")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/media/platform/qcom/venus/core.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
index d2842f496b47..ae374bb2a48f 100644
--- a/drivers/media/platform/qcom/venus/core.c
+++ b/drivers/media/platform/qcom/venus/core.c
@@ -224,11 +224,11 @@ static int venus_probe(struct platform_device *pdev)
 	if (IS_ERR(core->base))
 		return PTR_ERR(core->base);
 
-	core->video_path = of_icc_get(dev, "video-mem");
+	core->video_path = devm_of_icc_get(dev, "video-mem");
 	if (IS_ERR(core->video_path))
 		return PTR_ERR(core->video_path);
 
-	core->cpucfg_path = of_icc_get(dev, "cpu-cfg");
+	core->cpucfg_path = devm_of_icc_get(dev, "cpu-cfg");
 	if (IS_ERR(core->cpucfg_path))
 		return PTR_ERR(core->cpucfg_path);
 
@@ -367,9 +367,6 @@ static int venus_remove(struct platform_device *pdev)
 
 	hfi_destroy(core);
 
-	icc_put(core->video_path);
-	icc_put(core->cpucfg_path);
-
 	v4l2_device_unregister(&core->v4l2_dev);
 
 	mutex_destroy(&core->pm_lock);
-- 
2.30.2