From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Stanimir Varbanov <stanimir.varbanov@linaro.org>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] [v2] media: venus: core: Fix runtime PM imbalance in venus_probe
Date: Wed, 24 Jun 2020 14:30:24 +0800 [thread overview]
Message-ID: <20200624063024.17059-1-dinghao.liu@zju.edu.cn> (raw)
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. For other error
paths after this call, things are the same.
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---
Changelog:
v2: - Add pm_runtime_get_noresume() on failure of
pm_runtime_put_sync() to balance PM counter instead of
releasing everything here.
---
drivers/media/platform/qcom/venus/core.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
index 203c6538044f..b0b932bf8c02 100644
--- a/drivers/media/platform/qcom/venus/core.c
+++ b/drivers/media/platform/qcom/venus/core.c
@@ -287,8 +287,10 @@ static int venus_probe(struct platform_device *pdev)
goto err_core_deinit;
ret = pm_runtime_put_sync(dev);
- if (ret)
+ if (ret) {
+ pm_runtime_get_noresume(dev);
goto err_dev_unregister;
+ }
return 0;
@@ -299,6 +301,7 @@ static int venus_probe(struct platform_device *pdev)
err_venus_shutdown:
venus_shutdown(core);
err_runtime_disable:
+ pm_runtime_put_noidle(dev);
pm_runtime_set_suspended(dev);
pm_runtime_disable(dev);
hfi_destroy(core);
--
2.17.1
next reply other threads:[~2020-06-24 6:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-24 6:30 Dinghao Liu [this message]
2020-06-25 15:52 ` [PATCH] [v2] media: venus: core: Fix runtime PM imbalance in venus_probe Stanimir Varbanov
2020-06-26 0:54 ` dinghao.liu
2020-06-26 21:01 ` Stanimir Varbanov
2020-06-28 5:38 ` dinghao.liu
2020-06-24 15:25 [PATCH v2] " Markus Elfring
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