linux-kernel - [PATCH] media: venus: venc: Fix runtime PM imbalance in venc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 24 May 2020 12:31:32 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] media: venus: venc: Fix runtime PM imbalance in venc_open

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/media/platform/qcom/venus/venc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 9981a2a27c90..eefcfbb8f211 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -1169,7 +1169,7 @@ static int venc_open(struct file *file)
 
 	ret = pm_runtime_get_sync(core->dev_enc);
 	if (ret < 0)
-		goto err_free_inst;
+		goto err_put_sync;
 
 	ret = venc_ctrl_init(inst);
 	if (ret)
@@ -1214,7 +1214,6 @@ static int venc_open(struct file *file)
 	venc_ctrl_deinit(inst);
 err_put_sync:
 	pm_runtime_put_sync(core->dev_enc);
-err_free_inst:
 	kfree(inst);
 	return ret;
 }
-- 
2.17.1