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media: camss: vfe: Fix runtime PM imbalance on error

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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@zju.edu.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Dinghao Liu 2020-05-21 13:56:07 +02:00 committed by Mauro Carvalho Chehab
parent 606578801a
commit 779096916d
1 changed files with 4 additions and 6 deletions
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10
drivers/media/platform/qcom/camss/camss-vfe.c
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@ -1265,12 +1265,12 @@ static int vfe_get(struct vfe_device *vfe)
ret = vfe_set_clock_rates(vfe);
if (ret < 0)
goto error_clocks;
goto error_pm_runtime_get;
ret = camss_enable_clocks(vfe->nclocks, vfe->clock,
vfe->camss->dev);
if (ret < 0)
goto error_clocks;
goto error_pm_runtime_get;
ret = vfe_reset(vfe);
if (ret < 0)
@ -1282,7 +1282,7 @@ static int vfe_get(struct vfe_device *vfe)
} else {
ret = vfe_check_clock_rates(vfe);
if (ret < 0)
goto error_clocks;
goto error_pm_runtime_get;
}
vfe->power_count++;
@ -1293,10 +1293,8 @@ static int vfe_get(struct vfe_device *vfe)
error_reset:
camss_disable_clocks(vfe->nclocks, vfe->clock);
error_clocks:
pm_runtime_put_sync(vfe->camss->dev);
error_pm_runtime_get:
pm_runtime_put_sync(vfe->camss->dev);
camss_pm_domain_off(vfe->camss, vfe->id);
error_pm_domain: